fix port

for more information, see https://pre-commit.ci

.github/PULL_REQUEST_TEMPLATE.md

@@ -30,7 +30,7 @@ pytest -sx tests/test_stuff.py::test_something
 ```
 
 ```bash
-python -m lerobot.scripts.train --some.option=true
+lerobot-train --some.option=true
 ```
 
 ## SECTION TO REMOVE BEFORE SUBMITTING YOUR PR

.github/workflows/nightly.yml

@@ -29,8 +29,8 @@ on:
 env:
   UV_VERSION: "0.8.0"
   PYTHON_VERSION: "3.10"
-  DOCKER_IMAGE_NAME_CPU: huggingface/lerobot-gpu:latest
-  DOCKER_IMAGE_NAME_GPU: huggingface/lerobot-cpu:latest
+  DOCKER_IMAGE_NAME_CPU: huggingface/lerobot-cpu:latest
+  DOCKER_IMAGE_NAME_GPU: huggingface/lerobot-gpu:latest
 
 # Ensures that only the latest commit is built, canceling older runs.
 concurrency:

.github/workflows/release.yml

@@ -19,6 +19,11 @@ on:
     tags:
       - 'v*.*.*' # Trigger on tags like v0.1.0, v1.0.0
 
+# Sets up the environment variables
+env:
+  UV_VERSION: "0.8.0"
+  PYTHON_VERSION: "3.10"
+
 jobs:
   # This job builds the Python package and publishes it to PyPI
   build-and-publish:
@@ -50,6 +55,7 @@ jobs:
           VERSION_NUMBER=${VERSION#v}
           echo "tag_version=$VERSION_NUMBER" >> $GITHUB_OUTPUT
       - name: Check if version matches pyproject.toml
+        if: startsWith(github.ref, 'refs/tags/v') && !contains(github.ref, '-')
         # zizmor: ignore[template-injection]
         run: |
           TAG_VERSION=${{ steps.extract_info.outputs.tag_version }}
@@ -86,13 +92,29 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         # zizmor: ignore[template-injection]
-        run: gh release create ${{ github.ref_name }} --release-name "Release ${{ github.ref_name }}" --generate-notes ./dist/*
+        run: |
+          gh release create ${{ github.ref_name }} \
+            --title "Release ${{ github.ref_name }}" \
+            --generate-notes \
+            --draft=$([[ "${{ github.ref_name }}" == *-* ]] && echo true || echo false) \
+            --prerelease=$([[ "${{ github.ref_name }}" == *-* ]] && echo true || echo false) \
+            ./dist/*
 
-      - name: Publish to PyPI
-        if: startsWith(github.ref, 'refs/tags/v')
+      - name: Publish to TestPyPI for pre-releases
+        # True for tags like 'v0.2.0-rc1'
+        if: startsWith(github.ref, 'refs/tags/v') && contains(github.ref, '-')
         uses: pypa/gh-action-pypi-publish@v1.12.4 # zizmor: ignore[unpinned-uses, use-trusted-publishing]
         with:
-          password: ${{ secrets.PYPI_API_TOKEN }}
+          repository-url: https://test.pypi.org/legacy/
+          verbose: true
+          print-hash: true
+
+      - name: Publish to PyPI
+        if: startsWith(github.ref, 'refs/tags/v') && !contains(github.ref, '-')
+        uses: pypa/gh-action-pypi-publish@v1.12.4 # zizmor: ignore[unpinned-uses, use-trusted-publishing]
+        with:
+          verbose: true
+          print-hash: true
 
   # This job runs end-to-end tests on the release
   test-release:
@@ -119,15 +141,31 @@ jobs:
           enable-cache: true
           version: ${{ env.UV_VERSION }}
           python-version: ${{ env.PYTHON_VERSION }}
+      - name: Create uv virtual environment
+        run: uv venv
       - name: Install lerobot release
-        run: uv run pip install lerobot==${{ needs.build-and-publish.outputs.version }} # zizmor: ignore[template-injection]
-
+        # zizmor: ignore[template-injection]
+        run: |
+          VERSION="${{ needs.build-and-publish.outputs.version }}"
+          if [[ "$VERSION" == *-* ]]; then
+            BASE_VERSION="${VERSION%%-*}"
+            echo "Installing pre-release version $BASE_VERSION from TestPyPI..."
+            uv pip install \
+              --index-url https://test.pypi.org/simple/ \
+              --extra-index-url https://pypi.org/simple \
+              --index-strategy unsafe-best-match \
+               "lerobot[all]==$BASE_VERSION"
+          else
+            echo "Installing release version $VERSION from PyPI..."
+            uv pip install "lerobot[all]==$VERSION"
+          fi
       - name: Check lerobot version
-        run: uv run lerobot --version
+        run: uv run python -c "import lerobot; print(lerobot.__version__)"
 
       - name: Run end-to-end tests
         run: uv run make test-end-to-end
 
 
-# TODO(Steven): Publish draft/pre-release and to test pypi
+# TODO(Steven): Publish draft/pre-release and to test pypi weekly
+# TODO(Steven): Separate build and publish job
 # TODO(Steven): Tag documentation with the same version as the package

Makefile

@@ -44,7 +44,7 @@ test-end-to-end:
 	${MAKE} DEVICE=$(DEVICE) test-smolvla-ete-eval
 
 test-act-ete-train:
-	python -m lerobot.scripts.train \
+	lerobot-train \
 		--policy.type=act \
 		--policy.dim_model=64 \
 		--policy.n_action_steps=20 \
@@ -68,12 +68,12 @@ test-act-ete-train:
 		--output_dir=tests/outputs/act/
 
 test-act-ete-train-resume:
-	python -m lerobot.scripts.train \
+	lerobot-train \
 		--config_path=tests/outputs/act/checkpoints/000002/pretrained_model/train_config.json \
 		--resume=true
 
 test-act-ete-eval:
-	python -m lerobot.scripts.eval \
+	lerobot-eval \
 		--policy.path=tests/outputs/act/checkpoints/000004/pretrained_model \
 		--policy.device=$(DEVICE) \
 		--env.type=aloha \
@@ -82,7 +82,7 @@ test-act-ete-eval:
 		--eval.batch_size=1
 
 test-diffusion-ete-train:
-	python -m lerobot.scripts.train \
+	lerobot-train \
 		--policy.type=diffusion \
 		--policy.down_dims='[64,128,256]' \
 		--policy.diffusion_step_embed_dim=32 \
@@ -106,7 +106,7 @@ test-diffusion-ete-train:
 		--output_dir=tests/outputs/diffusion/
 
 test-diffusion-ete-eval:
-	python -m lerobot.scripts.eval \
+	lerobot-eval \
 		--policy.path=tests/outputs/diffusion/checkpoints/000002/pretrained_model \
 		--policy.device=$(DEVICE) \
 		--env.type=pusht \
@@ -115,7 +115,7 @@ test-diffusion-ete-eval:
 		--eval.batch_size=1
 
 test-tdmpc-ete-train:
-	python -m lerobot.scripts.train \
+	lerobot-train \
 		--policy.type=tdmpc \
 		--policy.device=$(DEVICE) \
 		--policy.push_to_hub=false \
@@ -137,7 +137,7 @@ test-tdmpc-ete-train:
 		--output_dir=tests/outputs/tdmpc/
 
 test-tdmpc-ete-eval:
-	python -m lerobot.scripts.eval \
+	lerobot-eval \
 		--policy.path=tests/outputs/tdmpc/checkpoints/000002/pretrained_model \
 		--policy.device=$(DEVICE) \
 		--env.type=xarm \
@@ -148,7 +148,7 @@ test-tdmpc-ete-eval:
 
 
 test-smolvla-ete-train:
-	python -m lerobot.scripts.train \
+	lerobot-train \
 		--policy.type=smolvla \
 		--policy.n_action_steps=20 \
 		--policy.chunk_size=20 \
@@ -171,7 +171,7 @@ test-smolvla-ete-train:
 		--output_dir=tests/outputs/smolvla/
 
 test-smolvla-ete-eval:
-	python -m lerobot.scripts.eval \
+	lerobot-eval \
 		--policy.path=tests/outputs/smolvla/checkpoints/000004/pretrained_model \
 		--policy.device=$(DEVICE) \
 		--env.type=aloha \

README.md

@@ -1,25 +1,21 @@
 <p align="center">
-  <picture>
-    <source media="(prefers-color-scheme: dark)" srcset="media/lerobot-logo-thumbnail.png">
-    <source media="(prefers-color-scheme: light)" srcset="media/lerobot-logo-thumbnail.png">
-    <img alt="LeRobot, Hugging Face Robotics Library" src="media/lerobot-logo-thumbnail.png" style="max-width: 100%;">
-  </picture>
+  <img alt="LeRobot, Hugging Face Robotics Library" src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/lerobot-logo-thumbnail.png" width="100%">
   <br/>
   <br/>
 </p>
 
 <div align="center">
 
-[![Tests](https://github.com/huggingface/lerobot/actions/workflows/nightly-tests.yml/badge.svg?branch=main)](https://github.com/huggingface/lerobot/actions/workflows/nightly-tests.yml?query=branch%3Amain)
-[![Coverage](https://codecov.io/gh/huggingface/lerobot/branch/main/graph/badge.svg?token=TODO)](https://codecov.io/gh/huggingface/lerobot)
+[![Tests](https://github.com/huggingface/lerobot/actions/workflows/nightly.yml/badge.svg?branch=main)](https://github.com/huggingface/lerobot/actions/workflows/nightly.yml?query=branch%3Amain)
 [![Python versions](https://img.shields.io/pypi/pyversions/lerobot)](https://www.python.org/downloads/)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/huggingface/lerobot/blob/main/LICENSE)
 [![Status](https://img.shields.io/pypi/status/lerobot)](https://pypi.org/project/lerobot/)
 [![Version](https://img.shields.io/pypi/v/lerobot)](https://pypi.org/project/lerobot/)
-[![Examples](https://img.shields.io/badge/Examples-green.svg)](https://github.com/huggingface/lerobot/tree/main/examples)
-[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.1%20adopted-ff69b4.svg)](https://github.com/huggingface/lerobot/blob/main/CODE_OF_CONDUCT.md)
+[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.1-ff69b4.svg)](https://github.com/huggingface/lerobot/blob/main/CODE_OF_CONDUCT.md)
 [![Discord](https://dcbadge.vercel.app/api/server/C5P34WJ68S?style=flat)](https://discord.gg/s3KuuzsPFb)
 
+<!-- [![Coverage](https://codecov.io/gh/huggingface/lerobot/branch/main/graph/badge.svg?token=TODO)](https://codecov.io/gh/huggingface/lerobot) -->
+
 </div>
 
 <h2 align="center">
@@ -29,10 +25,10 @@
 
 <div align="center">
   <img
-    src="media/hope_jr/hopejr.png?raw=true"
+    src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/hope_jr/hopejr.png"
     alt="HopeJR robot"
     title="HopeJR robot"
-    style="width: 60%;"
+    width="60%"
   />
 
   <p><strong>Meet HopeJR – A humanoid robot arm and hand for dexterous manipulation!</strong></p>
@@ -51,20 +47,12 @@
 </h2>
 
 <div align="center">
-  <div style="display: flex; gap: 1rem; justify-content: center; align-items: center;" >
-    <img
-      src="media/so101/so101.webp?raw=true"
-      alt="SO-101 follower arm"
-      title="SO-101 follower arm"
-      style="width: 40%;"
-    />
-    <img
-      src="media/so101/so101-leader.webp?raw=true"
-      alt="SO-101 leader arm"
-      title="SO-101 leader arm"
-      style="width: 40%;"
-    />
-  </div>
+  <table>
+    <tr>
+      <td align="center"><img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/so101/so101.webp" alt="SO-101 follower arm" title="SO-101 follower arm" width="90%"/></td>
+      <td align="center"><img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/so101/so101-leader.webp" alt="SO-101 leader arm" title="SO-101 leader arm" width="90%"/></td>
+    </tr>
+  </table>
 
   <p><strong>Meet the updated SO100, the SO-101 – Just €114 per arm!</strong></p>
   <p>Train it in minutes with a few simple moves on your laptop.</p>
@@ -76,7 +64,7 @@
   <p>Want to take it to the next level? Make your SO-101 mobile by building LeKiwi!</p>
   <p>Check out the <a href="https://huggingface.co/docs/lerobot/lekiwi">LeKiwi tutorial</a> and bring your robot to life on wheels.</p>
 
-  <img src="media/lekiwi/kiwi.webp?raw=true" alt="LeKiwi mobile robot" title="LeKiwi mobile robot" width="50%">
+  <img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/lekiwi/kiwi.webp" alt="LeKiwi mobile robot" title="LeKiwi mobile robot" width="50%">
 </div>
 
 <br/>
@@ -99,9 +87,9 @@
 
 <table>
   <tr>
-    <td><img src="media/gym/aloha_act.gif" width="100%" alt="ACT policy on ALOHA env"/></td>
-    <td><img src="media/gym/simxarm_tdmpc.gif" width="100%" alt="TDMPC policy on SimXArm env"/></td>
-    <td><img src="media/gym/pusht_diffusion.gif" width="100%" alt="Diffusion policy on PushT env"/></td>
+    <td><img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/gym/aloha_act.gif" width="100%" alt="ACT policy on ALOHA env"/></td>
+    <td><img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/gym/simxarm_tdmpc.gif" width="100%" alt="TDMPC policy on SimXArm env"/></td>
+    <td><img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/gym/pusht_diffusion.gif" width="100%" alt="Diffusion policy on PushT env"/></td>
   </tr>
   <tr>
     <td align="center">ACT policy on ALOHA env</td>
@@ -110,23 +98,11 @@
   </tr>
 </table>
 
-### Acknowledgment
-
-- The LeRobot team 🤗 for building SmolVLA [Paper](https://arxiv.org/abs/2506.01844), [Blog](https://huggingface.co/blog/smolvla).
-- Thanks to Tony Zhao, Zipeng Fu and colleagues for open sourcing ACT policy, ALOHA environments and datasets. Ours are adapted from [ALOHA](https://tonyzhaozh.github.io/aloha) and [Mobile ALOHA](https://mobile-aloha.github.io).
-- Thanks to Cheng Chi, Zhenjia Xu and colleagues for open sourcing Diffusion policy, Pusht environment and datasets, as well as UMI datasets. Ours are adapted from [Diffusion Policy](https://diffusion-policy.cs.columbia.edu) and [UMI Gripper](https://umi-gripper.github.io).
-- Thanks to Nicklas Hansen, Yunhai Feng and colleagues for open sourcing TDMPC policy, Simxarm environments and datasets. Ours are adapted from [TDMPC](https://github.com/nicklashansen/tdmpc) and [FOWM](https://www.yunhaifeng.com/FOWM).
-- Thanks to Antonio Loquercio and Ashish Kumar for their early support.
-- Thanks to [Seungjae (Jay) Lee](https://sjlee.cc/), [Mahi Shafiullah](https://mahis.life/) and colleagues for open sourcing [VQ-BeT](https://sjlee.cc/vq-bet/) policy and helping us adapt the codebase to our repository. The policy is adapted from [VQ-BeT repo](https://github.com/jayLEE0301/vq_bet_official).
-
 ## Installation
 
-Download our source code:
+LeRobot works with Python 3.10+ and PyTorch 2.2+.
 
-```bash
-git clone https://github.com/huggingface/lerobot.git
-cd lerobot
-```
+### Environment Setup
 
 Create a virtual environment with Python 3.10 and activate it, e.g. with [`miniconda`](https://docs.anaconda.com/free/miniconda/index.html):
 
@@ -151,7 +127,18 @@ conda install ffmpeg -c conda-forge
 >
 > - _[On Linux only]_ Install [ffmpeg build dependencies](https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu#GettheDependencies) and [compile ffmpeg from source with libsvtav1](https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu#libsvtav1), and make sure you use the corresponding ffmpeg binary to your install with `which ffmpeg`.
 
-Install 🤗 LeRobot:
+### Install LeRobot 🤗
+
+#### From Source
+
+First, clone the repository and navigate into the directory:
+
+```bash
+git clone https://github.com/huggingface/lerobot.git
+cd lerobot
+```
+
+Then, install the library in editable mode. This is useful if you plan to contribute to the code.
 
 ```bash
 pip install -e .
@@ -172,6 +159,34 @@ For instance, to install 🤗 LeRobot with aloha and pusht, use:
 pip install -e ".[aloha, pusht]"
 ```
 
+### Installation from PyPI
+
+**Core Library:**
+Install the base package with:
+
+```bash
+pip install lerobot
+```
+
+_This installs only the default dependencies._
+
+**Extra Features:**
+To install additional functionality, use one of the following:
+
+```bash
+pip install 'lerobot[all]'          # All available features
+pip install 'lerobot[aloha,pusht]'  # Specific features (Aloha & Pusht)
+pip install 'lerobot[feetech]'      # Feetech motor support
+```
+
+_Replace `[...]` with your desired features._
+
+**Available Tags:**
+For a full list of optional dependencies, see:
+https://pypi.org/project/lerobot/
+
+### Weights & Biases
+
 To use [Weights and Biases](https://docs.wandb.ai/quickstart) for experiment tracking, log in with
 
 ```bash
@@ -182,7 +197,7 @@ wandb login
 
 ### Visualize datasets
 
-Check out [example 1](./examples/1_load_lerobot_dataset.py) that illustrates how to use our dataset class which automatically downloads data from the Hugging Face hub.
+Check out [example 1](https://github.com/huggingface/lerobot/blob/main/examples/1_load_lerobot_dataset.py) that illustrates how to use our dataset class which automatically downloads data from the Hugging Face hub.
 
 You can also locally visualize episodes from a dataset on the hub by executing our script from the command line:
 
@@ -212,13 +227,13 @@ Our script can also visualize datasets stored on a distant server. See `python -
 
 A dataset in `LeRobotDataset` format is very simple to use. It can be loaded from a repository on the Hugging Face hub or a local folder simply with e.g. `dataset = LeRobotDataset("lerobot/aloha_static_coffee")` and can be indexed into like any Hugging Face and PyTorch dataset. For instance `dataset[0]` will retrieve a single temporal frame from the dataset containing observation(s) and an action as PyTorch tensors ready to be fed to a model.
 
-A specificity of `LeRobotDataset` is that, rather than retrieving a single frame by its index, we can retrieve several frames based on their temporal relationship with the indexed frame, by setting `delta_timestamps` to a list of relative times with respect to the indexed frame. For example, with `delta_timestamps = {"observation.image": [-1, -0.5, -0.2, 0]}` one can retrieve, for a given index, 4 frames: 3 "previous" frames 1 second, 0.5 seconds, and 0.2 seconds before the indexed frame, and the indexed frame itself (corresponding to the 0 entry). See example [1_load_lerobot_dataset.py](examples/1_load_lerobot_dataset.py) for more details on `delta_timestamps`.
+A specificity of `LeRobotDataset` is that, rather than retrieving a single frame by its index, we can retrieve several frames based on their temporal relationship with the indexed frame, by setting `delta_timestamps` to a list of relative times with respect to the indexed frame. For example, with `delta_timestamps = {"observation.image": [-1, -0.5, -0.2, 0]}` one can retrieve, for a given index, 4 frames: 3 "previous" frames 1 second, 0.5 seconds, and 0.2 seconds before the indexed frame, and the indexed frame itself (corresponding to the 0 entry). See example [1_load_lerobot_dataset.py](https://github.com/huggingface/lerobot/blob/main/examples/1_load_lerobot_dataset.py) for more details on `delta_timestamps`.
 
 Under the hood, the `LeRobotDataset` format makes use of several ways to serialize data which can be useful to understand if you plan to work more closely with this format. We tried to make a flexible yet simple dataset format that would cover most type of features and specificities present in reinforcement learning and robotics, in simulation and in real-world, with a focus on cameras and robot states but easily extended to other types of sensory inputs as long as they can be represented by a tensor.
 
 Here are the important details and internal structure organization of a typical `LeRobotDataset` instantiated with `dataset = LeRobotDataset("lerobot/aloha_static_coffee")`. The exact features will change from dataset to dataset but not the main aspects:
 
-```
+````
 dataset attributes:
   ├ hf_dataset: a Hugging Face dataset (backed by Arrow/parquet). Typical features example:
   │  ├ observation.images.cam_high (VideoFrame):
@@ -231,20 +246,30 @@ dataset attributes:
   │  ├ timestamp (float32): timestamp in the episode
   │  ├ next.done (bool): indicates the end of an episode ; True for the last frame in each episode
   │  └ index (int64): general index in the whole dataset
-  ├ episode_data_index: contains 2 tensors with the start and end indices of each episode
-  │  ├ from (1D int64 tensor): first frame index for each episode — shape (num episodes,) starts with 0
-  │  └ to: (1D int64 tensor): last frame index for each episode — shape (num episodes,)
-  ├ stats: a dictionary of statistics (max, mean, min, std) for each feature in the dataset, for instance
-  │  ├ observation.images.cam_high: {'max': tensor with same number of dimensions (e.g. `(c, 1, 1)` for images, `(c,)` for states), etc.}
-  │  ...
-  ├ info: a dictionary of metadata on the dataset
-  │  ├ codebase_version (str): this is to keep track of the codebase version the dataset was created with
-  │  ├ fps (float): frame per second the dataset is recorded/synchronized to
-  │  ├ video (bool): indicates if frames are encoded in mp4 video files to save space or stored as png files
-  │  └ encoding (dict): if video, this documents the main options that were used with ffmpeg to encode the videos
-  ├ videos_dir (Path): where the mp4 videos or png images are stored/accessed
-  └ camera_keys (list of string): the keys to access camera features in the item returned by the dataset (e.g. `["observation.images.cam_high", ...]`)
-```
+  ├ meta: a LeRobotDatasetMetadata object containing:
+  │  ├ info: a dictionary of metadata on the dataset
+  │  │  ├ codebase_version (str): this is to keep track of the codebase version the dataset was created with
+  │  │  ├ fps (int): frame per second the dataset is recorded/synchronized to
+  │  │  ├ features (dict): all features contained in the dataset with their shapes and types
+  │  │  ├ total_episodes (int): total number of episodes in the dataset
+  │  │  ├ total_frames (int): total number of frames in the dataset
+  │  │  ├ robot_type (str): robot type used for recording
+  │  │  ├ data_path (str): formattable string for the parquet files
+  │  │  └ video_path (str): formattable string for the video files (if using videos)
+  │  ├ episodes: a DataFrame containing episode metadata with columns:
+  │  │  ├ episode_index (int): index of the episode
+  │  │  ├ tasks (list): list of tasks for this episode
+  │  │  ├ length (int): number of frames in this episode
+  │  │  ├ dataset_from_index (int): start index of this episode in the dataset
+  │  │  └ dataset_to_index (int): end index of this episode in the dataset
+  │  ├ stats: a dictionary of statistics (max, mean, min, std) for each feature in the dataset, for instance
+  │  │  ├ observation.images.front_cam: {'max': tensor with same number of dimensions (e.g. `(c, 1, 1)` for images, `(c,)` for states), etc.}
+  │  │  └ ...
+  │  └ tasks: a DataFrame containing task information with task names as index and task_index as values
+  ├ root (Path): local directory where the dataset is stored
+  ├ image_transforms (Callable): optional image transformations to apply to visual modalities
+  └ delta_timestamps (dict): optional delta timestamps for temporal queries
+decoding videos (e.g., 'pyav', 'torchcodec')
 
 A `LeRobotDataset` is serialised using several widespread file formats for each of its parts, namely:
 
@@ -256,39 +281,39 @@ Dataset can be uploaded/downloaded from the HuggingFace hub seamlessly. To work
 
 ### Evaluate a pretrained policy
 
-Check out [example 2](./examples/2_evaluate_pretrained_policy.py) that illustrates how to download a pretrained policy from Hugging Face hub, and run an evaluation on its corresponding environment.
+Check out [example 2](https://github.com/huggingface/lerobot/blob/main/examples/2_evaluate_pretrained_policy.py) that illustrates how to download a pretrained policy from Hugging Face hub, and run an evaluation on its corresponding environment.
 
 We also provide a more capable script to parallelize the evaluation over multiple environments during the same rollout. Here is an example with a pretrained model hosted on [lerobot/diffusion_pusht](https://huggingface.co/lerobot/diffusion_pusht):
 
 ```bash
-python -m lerobot.scripts.eval \
+lerobot-eval \
     --policy.path=lerobot/diffusion_pusht \
     --env.type=pusht \
     --eval.batch_size=10 \
     --eval.n_episodes=10 \
     --policy.use_amp=false \
     --policy.device=cuda
-```
+````
 
 Note: After training your own policy, you can re-evaluate the checkpoints with:
 
 ```bash
-python -m lerobot.scripts.eval --policy.path={OUTPUT_DIR}/checkpoints/last/pretrained_model
+lerobot-eval --policy.path={OUTPUT_DIR}/checkpoints/last/pretrained_model
 ```
 
-See `python -m lerobot.scripts.eval --help` for more instructions.
+See `lerobot-eval --help` for more instructions.
 
 ### Train your own policy
 
-Check out [example 3](./examples/3_train_policy.py) that illustrates how to train a model using our core library in python, and [example 4](./examples/4_train_policy_with_script.md) that shows how to use our training script from command line.
+Check out [example 3](https://github.com/huggingface/lerobot/blob/main/examples/3_train_policy.py) that illustrates how to train a model using our core library in python, and [example 4](https://github.com/huggingface/lerobot/blob/main/examples/4_train_policy_with_script.md) that shows how to use our training script from command line.
 
 To use wandb for logging training and evaluation curves, make sure you've run `wandb login` as a one-time setup step. Then, when running the training command above, enable WandB in the configuration by adding `--wandb.enable=true`.
 
-A link to the wandb logs for the run will also show up in yellow in your terminal. Here is an example of what they look like in your browser. Please also check [here](./examples/4_train_policy_with_script.md#typical-logs-and-metrics) for the explanation of some commonly used metrics in logs.
+A link to the wandb logs for the run will also show up in yellow in your terminal. Here is an example of what they look like in your browser. Please also check [here](https://github.com/huggingface/lerobot/blob/main/examples/4_train_policy_with_script.md#typical-logs-and-metrics) for the explanation of some commonly used metrics in logs.
 
-![](media/wandb.png)
+\<img src="https://raw.githubusercontent.com/huggingface/lerobot/main/media/wandb.png" alt="WandB logs example"\>
 
-Note: For efficiency, during training every checkpoint is evaluated on a low number of episodes. You may use `--eval.n_episodes=500` to evaluate on more episodes than the default. Or, after training, you may want to re-evaluate your best checkpoints on more episodes or change the evaluation settings. See `python -m lerobot.scripts.eval --help` for more instructions.
+Note: For efficiency, during training every checkpoint is evaluated on a low number of episodes. You may use `--eval.n_episodes=500` to evaluate on more episodes than the default. Or, after training, you may want to re-evaluate your best checkpoints on more episodes or change the evaluation settings. See `lerobot-eval --help` for more instructions.
 
 #### Reproduce state-of-the-art (SOTA)
 
@@ -296,7 +321,7 @@ We provide some pretrained policies on our [hub page](https://huggingface.co/ler
 You can reproduce their training by loading the config from their run. Simply running:
 
 ```bash
-python -m lerobot.scripts.train --config_path=lerobot/diffusion_pusht
+lerobot-train --config_path=lerobot/diffusion_pusht
 ```
 
 reproduces SOTA results for Diffusion Policy on the PushT task.
@@ -305,26 +330,6 @@ reproduces SOTA results for Diffusion Policy on the PushT task.
 
 If you would like to contribute to 🤗 LeRobot, please check out our [contribution guide](https://github.com/huggingface/lerobot/blob/main/CONTRIBUTING.md).
 
-<!-- ### Add a new dataset
-
-To add a dataset to the hub, you need to login using a write-access token, which can be generated from the [Hugging Face settings](https://huggingface.co/settings/tokens):
-```bash
-huggingface-cli login --token ${HUGGINGFACE_TOKEN} --add-to-git-credential
-```
-
-Then point to your raw dataset folder (e.g. `data/aloha_static_pingpong_test_raw`), and push your dataset to the hub with:
-```bash
-python lerobot/scripts/push_dataset_to_hub.py \
---raw-dir data/aloha_static_pingpong_test_raw \
---out-dir data \
---repo-id lerobot/aloha_static_pingpong_test \
---raw-format aloha_hdf5
-```
-
-See `python lerobot/scripts/push_dataset_to_hub.py --help` for more instructions.
-
-If your dataset format is not supported, implement your own in `lerobot/datasets/push_dataset_to_hub/${raw_format}_format.py` by copying examples like [pusht_zarr](https://github.com/huggingface/lerobot/blob/main/lerobot/datasets/push_dataset_to_hub/pusht_zarr_format.py), [umi_zarr](https://github.com/huggingface/lerobot/blob/main/lerobot/datasets/push_dataset_to_hub/umi_zarr_format.py), [aloha_hdf5](https://github.com/huggingface/lerobot/blob/main/lerobot/datasets/push_dataset_to_hub/aloha_hdf5_format.py), or [xarm_pkl](https://github.com/huggingface/lerobot/blob/main/lerobot/datasets/push_dataset_to_hub/xarm_pkl_format.py). -->
-
 ### Add a pretrained policy
 
 Once you have trained a policy you may upload it to the Hugging Face hub using a hub id that looks like `${hf_user}/${repo_name}` (e.g. [lerobot/diffusion_pusht](https://huggingface.co/lerobot/diffusion_pusht)).
@@ -341,34 +346,16 @@ To upload these to the hub, run the following:
 huggingface-cli upload ${hf_user}/${repo_name} path/to/pretrained_model
 ```
 
-See [eval.py](https://github.com/huggingface/lerobot/blob/main/lerobot/scripts/eval.py) for an example of how other people may use your policy.
+See [eval.py](https://github.com/huggingface/lerobot/blob/main/src/lerobot/scripts/eval.py) for an example of how other people may use your policy.
 
-### Improve your code with profiling
+### Acknowledgment
 
-An example of a code snippet to profile the evaluation of a policy:
-
-<!-- prettier-ignore-start -->
-```python
-from torch.profiler import profile, record_function, ProfilerActivity
-
-def trace_handler(prof):
-    prof.export_chrome_trace(f"tmp/trace_schedule_{prof.step_num}.json")
-
-with profile(
-    activities=[ProfilerActivity.CPU, ProfilerActivity.CUDA],
-    schedule=torch.profiler.schedule(
-        wait=2,
-        warmup=2,
-        active=3,
-    ),
-    on_trace_ready=trace_handler
-) as prof:
-    with record_function("eval_policy"):
-        for i in range(num_episodes):
-            prof.step()
-            # insert code to profile, potentially whole body of eval_policy function
-```
-<!-- prettier-ignore-end -->
+- The LeRobot team 🤗 for building SmolVLA [Paper](https://arxiv.org/abs/2506.01844), [Blog](https://huggingface.co/blog/smolvla).
+- Thanks to Tony Zhao, Zipeng Fu and colleagues for open sourcing ACT policy, ALOHA environments and datasets. Ours are adapted from [ALOHA](https://tonyzhaozh.github.io/aloha) and [Mobile ALOHA](https://mobile-aloha.github.io).
+- Thanks to Cheng Chi, Zhenjia Xu and colleagues for open sourcing Diffusion policy, Pusht environment and datasets, as well as UMI datasets. Ours are adapted from [Diffusion Policy](https://diffusion-policy.cs.columbia.edu) and [UMI Gripper](https://umi-gripper.github.io).
+- Thanks to Nicklas Hansen, Yunhai Feng and colleagues for open sourcing TDMPC policy, Simxarm environments and datasets. Ours are adapted from [TDMPC](https://github.com/nicklashansen/tdmpc) and [FOWM](https://www.yunhaifeng.com/FOWM).
+- Thanks to Antonio Loquercio and Ashish Kumar for their early support.
+- Thanks to [Seungjae (Jay) Lee](https://sjlee.cc/), [Mahi Shafiullah](https://mahis.life/) and colleagues for open sourcing [VQ-BeT](https://sjlee.cc/vq-bet/) policy and helping us adapt the codebase to our repository. The policy is adapted from [VQ-BeT repo](https://github.com/jayLEE0301/vq_bet_official).
 
 ## Citation
 
@@ -376,83 +363,13 @@ If you want, you can cite this work with:
 
 ```bibtex
 @misc{cadene2024lerobot,
-    author = {Cadene, Remi and Alibert, Simon and Soare, Alexander and Gallouedec, Quentin and Zouitine, Adil and Palma, Steven and Kooijmans, Pepijn and Aractingi, Michel and Shukor, Mustafa and Aubakirova, Dana and Russi, Martino and Capuano, Francesco and Pascale, Caroline and Choghari, Jade and Moss, Jess and Wolf, Thomas},
+    author = {Cadene, Remi and Alibert, Simon and Soare, Alexander and Gallouedec, Quentin and Zouitine, Adil and Palma, Steven and Kooijmans, Pepijn and Aractingi, Michel and Shukor, Mustafa and Aubakirova, Dana and Russi, Martino and Capuano, Francesco and Pascal, Caroline and Choghari, Jade and Moss, Jess and Wolf, Thomas},
     title = {LeRobot: State-of-the-art Machine Learning for Real-World Robotics in Pytorch},
     howpublished = "\url{https://github.com/huggingface/lerobot}",
     year = {2024}
 }
 ```
 
-Additionally, if you are using any of the particular policy architecture, pretrained models, or datasets, it is recommended to cite the original authors of the work as they appear below:
-
-- [SmolVLA](https://arxiv.org/abs/2506.01844)
-
-```bibtex
-@article{shukor2025smolvla,
-  title={SmolVLA: A Vision-Language-Action Model for Affordable and Efficient Robotics},
-  author={Shukor, Mustafa and Aubakirova, Dana and Capuano, Francesco and Kooijmans, Pepijn and Palma, Steven and Zouitine, Adil and Aractingi, Michel and Pascal, Caroline and Russi, Martino and Marafioti, Andres and Alibert, Simon and Cord, Matthieu and Wolf, Thomas and Cadene, Remi},
-  journal={arXiv preprint arXiv:2506.01844},
-  year={2025}
-}
-```
-
-- [Diffusion Policy](https://diffusion-policy.cs.columbia.edu)
-
-```bibtex
-@article{chi2024diffusionpolicy,
-	author = {Cheng Chi and Zhenjia Xu and Siyuan Feng and Eric Cousineau and Yilun Du and Benjamin Burchfiel and Russ Tedrake and Shuran Song},
-	title ={Diffusion Policy: Visuomotor Policy Learning via Action Diffusion},
-	journal = {The International Journal of Robotics Research},
-	year = {2024},
-}
-```
-
-- [ACT or ALOHA](https://tonyzhaozh.github.io/aloha)
-
-```bibtex
-@article{zhao2023learning,
-  title={Learning fine-grained bimanual manipulation with low-cost hardware},
-  author={Zhao, Tony Z and Kumar, Vikash and Levine, Sergey and Finn, Chelsea},
-  journal={arXiv preprint arXiv:2304.13705},
-  year={2023}
-}
-```
-
-- [TDMPC](https://www.nicklashansen.com/td-mpc/)
-
-```bibtex
-@inproceedings{Hansen2022tdmpc,
-	title={Temporal Difference Learning for Model Predictive Control},
-	author={Nicklas Hansen and Xiaolong Wang and Hao Su},
-	booktitle={ICML},
-	year={2022}
-}
-```
-
-- [VQ-BeT](https://sjlee.cc/vq-bet/)
-
-```bibtex
-@article{lee2024behavior,
-  title={Behavior generation with latent actions},
-  author={Lee, Seungjae and Wang, Yibin and Etukuru, Haritheja and Kim, H Jin and Shafiullah, Nur Muhammad Mahi and Pinto, Lerrel},
-  journal={arXiv preprint arXiv:2403.03181},
-  year={2024}
-}
-```
-
-- [HIL-SERL](https://hil-serl.github.io/)
-
-```bibtex
-@Article{luo2024hilserl,
-title={Precise and Dexterous Robotic Manipulation via Human-in-the-Loop Reinforcement Learning},
-author={Jianlan Luo and Charles Xu and Jeffrey Wu and Sergey Levine},
-year={2024},
-eprint={2410.21845},
-archivePrefix={arXiv},
-primaryClass={cs.RO}
-}
-```
-
 ## Star History
 
 [![Star History Chart](https://api.star-history.com/svg?repos=huggingface/lerobot&type=Timeline)](https://star-history.com/#huggingface/lerobot&Timeline)

benchmarks/video/run_video_benchmark.py

@@ -108,7 +108,8 @@ def save_decoded_frames(
 
 
 def save_first_episode(imgs_dir: Path, dataset: LeRobotDataset) -> None:
-    ep_num_images = dataset.episode_data_index["to"][0].item()
+    episode_index = 0
+    ep_num_images = dataset.meta.episodes["length"][episode_index]
     if imgs_dir.exists() and len(list(imgs_dir.glob("frame_*.png"))) == ep_num_images:
         return
 
@@ -265,7 +266,8 @@ def benchmark_encoding_decoding(
             overwrite=True,
         )
 
-    ep_num_images = dataset.episode_data_index["to"][0].item()
+    episode_index = 0
+    ep_num_images = dataset.meta.episodes["length"][episode_index]
     width, height = tuple(dataset[0][dataset.meta.camera_keys[0]].shape[-2:])
     num_pixels = width * height
     video_size_bytes = video_path.stat().st_size

docker/Dockerfile.user

@@ -29,7 +29,7 @@ ENV DEBIAN_FRONTEND=noninteractive \
 
 # Install system dependencies and uv (as root)
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    build-essential git curl libglib2.0-0 libegl1-mesa ffmpeg \
+    build-essential git curl libglib2.0-0 libegl1-mesa-dev ffmpeg \
     libusb-1.0-0-dev speech-dispatcher libgeos-dev portaudio19-dev \
     && curl -LsSf https://astral.sh/uv/install.sh | sh \
     && mv /root/.local/bin/uv /usr/local/bin/uv \

docs-requirements.txt

@@ -0,0 +1,3 @@
+# docs-requirements.txt
+hf-doc-builder @ git+https://github.com/huggingface/doc-builder.git@main
+watchdog>=6.0.0

docs/README.md

@@ -20,7 +20,7 @@ To generate the documentation, you first have to build it. Several packages are
 you can install them with the following command, at the root of the code repository:
 
 ```bash
-pip install -e ".[docs]"
+pip install -e . -r docs-requirements.txt
 ```
 
 You will also need `nodejs`. Please refer to their [installation page](https://nodejs.org/en/download)

docs/source/_toctree.yml

@@ -13,14 +13,14 @@
     title: Cameras
   - local: integrate_hardware
     title: Bring Your Own Hardware
-  - local: processor_tutorial
-    title: RobotProcessor Pipeline
   - local: hilserl
     title: Train a Robot with RL
   - local: hilserl_sim
     title: Train RL in Simulation
   - local: async
     title: Use Async Inference
+  - local: porting_datasets_v3
+    title: Porting Large Datasets
   title: "Tutorials"
 - sections:
   - local: smolvla

docs/source/cameras.mdx

@@ -9,7 +9,7 @@ To instantiate a camera, you need a camera identifier. This identifier might cha
 To find the camera indices of the cameras plugged into your system, run the following script:
 
 ```bash
-python -m lerobot.find_cameras opencv # or realsense for Intel Realsense cameras
+lerobot-find-cameras opencv # or realsense for Intel Realsense cameras
 ```
 
 The output will look something like this if you have two cameras connected:

docs/source/hilserl.mdx

@@ -56,41 +56,27 @@ pip install -e ".[hilserl]"
 
 ### Understanding Configuration
 
-The training process begins with proper configuration for the HILSerl environment. The main configuration class is `GymManipulatorConfig` in `lerobot/scripts/rl/gym_manipulator.py`, which contains nested `HILSerlRobotEnvConfig` and `DatasetConfig`. The configuration is organized into focused, nested sub-configs:
+The training process begins with proper configuration for the HILSerl environment. The configuration class of interest is `HILSerlRobotEnvConfig` in `lerobot/envs/configs.py`. Which is defined as:
 
 <!-- prettier-ignore-start -->
 ```python
-class GymManipulatorConfig:
-    env: HILSerlRobotEnvConfig    # Environment configuration (nested)
-    dataset: DatasetConfig    # Dataset recording/replay configuration (nested)
-    mode: str | None = None    # "record", "replay", or None (for training)
-
 class HILSerlRobotEnvConfig(EnvConfig):
     robot: RobotConfig | None = None    # Main robot agent (defined in `lerobot/robots`)
-    teleop: TeleoperatorConfig | None = None    # Teleoperator agent, e.g., gamepad or leader arm
-    processor: HILSerlProcessorConfig    # Processing pipeline configuration (nested)
+    teleop: TeleoperatorConfig | None = None    # Teleoperator agent, e.g., gamepad or leader arm, (defined in `lerobot/teleoperators`)
+    wrapper: EnvTransformConfig | None = None    # Environment wrapper settings; check `lerobot/scripts/server/gym_manipulator.py`
+    fps: int = 10    # Control frequency
     name: str = "real_robot"    # Environment name
-    device: str = "cuda"    # Compute device
-    fps: int = 30    # Control frequency
-
-# Nested processor configuration
-class HILSerlProcessorConfig:
-    control_mode: str = "gamepad"    # Control mode
-    observation: ObservationConfig    # Observation processing settings
-    image_preprocessing: ImagePreprocessingConfig    # Image crop/resize settings
-    gripper: GripperConfig    # Gripper control and penalty settings
-    reset: ResetConfig    # Environment reset and timing settings
-    inverse_kinematics: InverseKinematicsConfig    # IK processing settings
-    reward_classifier: RewardClassifierConfig    # Reward classifier settings
-
-# Dataset configuration
-class DatasetConfig:
-    repo_id: str    # LeRobot dataset repository ID
+    mode: str = None    # "record", "replay", or None (for training)
+    repo_id: str | None = None    # LeRobot dataset repository ID
     dataset_root: str | None = None    # Local dataset root (optional)
-    task: str    # Task identifier
-    num_episodes: int    # Number of episodes for recording
-    episode: int    # Episode index for replay
-    push_to_hub: bool    # Whether to push datasets to Hub
+    task: str = ""    # Task identifier
+    num_episodes: int = 10    # Number of episodes for recording
+    episode: int = 0    # episode index for replay
+    device: str = "cuda"    # Compute device
+    push_to_hub: bool = True    # Whether to push the recorded datasets to Hub
+    pretrained_policy_name_or_path: str | None = None    # For policy loading
+    reward_classifier_pretrained_path: str | None = None    # For reward model
+    number_of_steps_after_success: int = 0    # For reward classifier, collect more positive examples after a success to train a classifier
 ```
 <!-- prettier-ignore-end -->
 
@@ -144,31 +130,22 @@ With the bounds defined, you can safely collect demonstrations for training. Tra
 
 Create a configuration file for recording demonstrations (or edit an existing one like [env_config_so100.json](https://huggingface.co/datasets/aractingi/lerobot-example-config-files/blob/main/env_config_so100.json)):
 
-1. Set `mode` to `"record"` at the root level
-2. Specify a unique `repo_id` for your dataset in the `dataset` section (e.g., "username/task_name")
-3. Set `num_episodes` in the `dataset` section to the number of demonstrations you want to collect
-4. Set `env.processor.image_preprocessing.crop_params_dict` to `{}` initially (we'll determine crops later)
-5. Configure `env.robot`, `env.teleop`, and other hardware settings in the `env` section
+1. Set `mode` to `"record"`
+2. Specify a unique `repo_id` for your dataset (e.g., "username/task_name")
+3. Set `num_episodes` to the number of demonstrations you want to collect
+4. Set `crop_params_dict` to `null` initially (we'll determine crops later)
+5. Configure `robot`, `cameras`, and other hardware settings
 
 Example configuration section:
 
 ```json
-{
-  "env": {
-    "type": "gym_manipulator",
-    "fps": 10
-    // ... robot, teleop, processor configs ...
-  },
-  "dataset": {
-    "repo_id": "username/pick_lift_cube",
-    "dataset_root": null,
-    "task": "pick_and_lift",
-    "num_episodes": 15,
-    "episode": 0,
-    "push_to_hub": true
-  },
-  "mode": "record"
-}
+"mode": "record",
+"repo_id": "username/pick_lift_cube",
+"dataset_root": null,
+"task": "pick_and_lift",
+"num_episodes": 15,
+"episode": 0,
+"push_to_hub": true
 ```
 
 ### Using a Teleoperation Device
@@ -214,17 +191,10 @@ The gamepad provides a very convenient way to control the robot and the episode
 To setup the gamepad, you need to set the `control_mode` to `"gamepad"` and define the `teleop` section in the configuration file.
 
 ```json
-{
-  "env": {
     "teleop": {
-      "type": "gamepad",
-      "use_gripper": true
+        "type": "gamepad",
+        "use_gripper": true
     },
-    "processor": {
-      "control_mode": "gamepad"
-    }
-  }
-}
 ```
 
 <p align="center">
@@ -246,18 +216,11 @@ The SO101 leader arm has reduced gears that allows it to move and track the foll
 To setup the SO101 leader, you need to set the `control_mode` to `"leader"` and define the `teleop` section in the configuration file.
 
 ```json
-{
-  "env": {
     "teleop": {
-      "type": "so101_leader",
-      "port": "/dev/tty.usbmodem585A0077921",
-      "use_degrees": true
+        "type": "so101_leader",
+        "port": "/dev/tty.usbmodem585A0077921", # check your port number
+        "use_degrees": true
     },
-    "processor": {
-      "control_mode": "leader"
-    }
-  }
-}
 ```
 
 In order to annotate the success/failure of the episode, **you will need** to use a keyboard to press `s` for success, `esc` for failure.
@@ -288,7 +251,7 @@ python -m lerobot.scripts.rl.gym_manipulator --config_path src/lerobot/configs/e
 
 During recording:
 
-1. The robot will reset to the initial position defined in the configuration file `env.processor.reset.fixed_reset_joint_positions`
+1. The robot will reset to the initial position defined in the configuration file `fixed_reset_joint_positions`
 2. Complete the task successfully
 3. The episode ends with a reward of 1 when you press the "success" button
 4. If the time limit is reached, or the fail button is pressed, the episode ends with a reward of 0
@@ -347,19 +310,11 @@ observation.images.front: [180, 250, 120, 150]
 Add these crop parameters to your training configuration:
 
 ```json
-{
-  "env": {
-    "processor": {
-      "image_preprocessing": {
-        "crop_params_dict": {
-          "observation.images.side": [180, 207, 180, 200],
-          "observation.images.front": [180, 250, 120, 150]
-        },
-        "resize_size": [128, 128]
-      }
-    }
-  }
-}
+"crop_params_dict": {
+    "observation.images.side": [180, 207, 180, 200],
+    "observation.images.front": [180, 250, 120, 150]
+},
+"resize_size": [128, 128]
 ```
 
 **Recommended image resolution**
@@ -388,35 +343,26 @@ python -m lerobot.scripts.rl.gym_manipulator --config_path src/lerobot/configs/r
 
 **Key Parameters for Data Collection**
 
-- **mode**: set it to `"record"` to collect a dataset (at root level)
-- **dataset.repo_id**: `"hf_username/dataset_name"`, name of the dataset and repo on the hub
-- **dataset.num_episodes**: Number of episodes to record
-- **env.processor.reset.number_of_steps_after_success**: Number of additional frames to record after a success (reward=1) is detected
-- **env.fps**: Number of frames per second to record
-- **dataset.push_to_hub**: Whether to push the dataset to the hub
+- **mode**: set it to `"record"` to collect a dataset
+- **repo_id**: `"hf_username/dataset_name"`, name of the dataset and repo on the hub
+- **num_episodes**: Number of episodes to record
+- **number_of_steps_after_success**: Number of additional frames to record after a success (reward=1) is detected
+- **fps**: Number of frames per second to record
+- **push_to_hub**: Whether to push the dataset to the hub
 
-The `env.processor.reset.number_of_steps_after_success` parameter is crucial as it allows you to collect more positive examples. When a success is detected, the system will continue recording for the specified number of steps while maintaining the reward=1 label. Otherwise, there won't be enough states in the dataset labeled to 1 to train a good classifier.
+The `number_of_steps_after_success` parameter is crucial as it allows you to collect more positive examples. When a success is detected, the system will continue recording for the specified number of steps while maintaining the reward=1 label. Otherwise, there won't be enough states in the dataset labeled to 1 to train a good classifier.
 
 Example configuration section for data collection:
 
 ```json
 {
-  "env": {
-    "type": "gym_manipulator",
-    "fps": 10,
-    "processor": {
-      "reset": {
-        "number_of_steps_after_success": 15
-      }
-    }
-  },
-  "dataset": {
-    "repo_id": "hf_username/dataset_name",
-    "dataset_root": "data/your_dataset",
-    "num_episodes": 20,
-    "push_to_hub": true
-  },
-  "mode": "record"
+  "mode": "record",
+  "repo_id": "hf_username/dataset_name",
+  "dataset_root": "data/your_dataset",
+  "num_episodes": 20,
+  "push_to_hub": true,
+  "fps": 10,
+  "number_of_steps_after_success": 15
 }
 ```
 
@@ -466,7 +412,7 @@ Example configuration for training the [reward classifier](https://huggingface.c
 To train the classifier, use the `train.py` script with your configuration:
 
 ```bash
-python -m lerobot.scripts.train --config_path path/to/reward_classifier_train_config.json
+lerobot-train --config_path path/to/reward_classifier_train_config.json
 ```
 
 **Deploying and Testing the Model**
@@ -475,17 +421,9 @@ To use your trained reward classifier, configure the `HILSerlRobotEnvConfig` to
 
 <!-- prettier-ignore-start -->
 ```python
-config = GymManipulatorConfig(
-    env=HILSerlRobotEnvConfig(
-        processor=HILSerlProcessorConfig(
-            reward_classifier=RewardClassifierConfig(
-                pretrained_path="path_to_your_pretrained_trained_model"
-            )
-        ),
-        # Other environment parameters
-    ),
-    dataset=DatasetConfig(...),
-    mode=None  # For training
+env_config = HILSerlRobotEnvConfig(
+    reward_classifier_pretrained_path="path_to_your_pretrained_trained_model",
+    # Other environment parameters
 )
 ```
 <!-- prettier-ignore-end -->
@@ -494,15 +432,7 @@ or set the argument in the json config file.
 
 ```json
 {
-  "env": {
-    "processor": {
-      "reward_classifier": {
-        "pretrained_path": "path_to_your_pretrained_model",
-        "success_threshold": 0.7,
-        "success_reward": 1.0
-      }
-    }
-  }
+  "reward_classifier_pretrained_path": "path_to_your_pretrained_model"
 }
 ```
 
@@ -528,7 +458,7 @@ The reward classifier will automatically provide rewards based on the visual inp
 3. **Train the classifier**:
 
    ```bash
-   python -m lerobot.scripts.train --config_path src/lerobot/configs/reward_classifier_train_config.json
+   lerobot-train --config_path src/lerobot/configs/reward_classifier_train_config.json
    ```
 
 4. **Test the classifier**:

docs/source/hope_jr.mdx

@@ -19,7 +19,7 @@ pip install -e ".[hopejr]"
 Before starting calibration and operation, you need to identify the USB ports for each HopeJR component. Run this script to find the USB ports for the arm, hand, glove, and exoskeleton:
 
 ```bash
-python -m lerobot.find_port
+lerobot-find-port
 ```
 
 This will display the available USB ports and their associated devices. Make note of the port paths (e.g., `/dev/tty.usbmodem58760433331`, `/dev/tty.usbmodem11301`) as you'll need to specify them in the `--robot.port` and `--teleop.port` parameters when recording data, replaying episodes, or running teleoperation scripts.
@@ -31,7 +31,7 @@ Before performing teleoperation, HopeJR's limbs need to be calibrated. Calibrati
 ### 1.1 Calibrate Robot Hand
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --robot.type=hope_jr_hand \
     --robot.port=/dev/tty.usbmodem58760432281 \
     --robot.id=blue \
@@ -81,7 +81,7 @@ Once you have set the appropriate boundaries for all joints, click "Save" to sav
 ### 1.2 Calibrate Teleoperator Glove
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=homunculus_glove \
     --teleop.port=/dev/tty.usbmodem11201 \
     --teleop.id=red \
@@ -120,7 +120,7 @@ Once calibration is complete, the system will save the calibration to `/Users/yo
 ### 1.3 Calibrate Robot Arm
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --robot.type=hope_jr_arm \
     --robot.port=/dev/tty.usbserial-1110 \
     --robot.id=white
@@ -146,7 +146,7 @@ Use the calibration interface to set the range boundaries for each joint. Move e
 ### 1.4 Calibrate Teleoperator Exoskeleton
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=homunculus_arm \
     --teleop.port=/dev/tty.usbmodem11201 \
     --teleop.id=black
@@ -178,7 +178,7 @@ Due to global variable conflicts in the Feetech middleware, teleoperation for ar
 ### Hand
 
 ```bash
-python -m lerobot.teleoperate \
+lerobot-teleoperate \
     --robot.type=hope_jr_hand \
     --robot.port=/dev/tty.usbmodem58760432281 \
     --robot.id=blue \
@@ -194,7 +194,7 @@ python -m lerobot.teleoperate \
 ### Arm
 
 ```bash
-python -m lerobot.teleoperate \
+lerobot-teleoperate \
     --robot.type=hope_jr_arm \
     --robot.port=/dev/tty.usbserial-1110 \
     --robot.id=white \
@@ -214,7 +214,7 @@ Record, Replay and Train with Hope-JR is still experimental.
 This step records the dataset, which can be seen as an example [here](https://huggingface.co/datasets/nepyope/hand_record_test_with_video_data/settings).
 
 ```bash
-python -m lerobot.record \
+lerobot-record \
     --robot.type=hope_jr_hand \
     --robot.port=/dev/tty.usbmodem58760432281 \
     --robot.id=right \
@@ -236,7 +236,7 @@ python -m lerobot.record \
 ### Replay
 
 ```bash
-python -m lerobot.replay \
+lerobot-replay \
     --robot.type=hope_jr_hand \
     --robot.port=/dev/tty.usbmodem58760432281 \
     --robot.id=right \
@@ -248,7 +248,7 @@ python -m lerobot.replay \
 ### Train
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
   --dataset.repo_id=nepyope/hand_record_test_with_video_data \
   --policy.type=act \
   --output_dir=outputs/train/hopejr_hand \
@@ -263,7 +263,7 @@ python -m lerobot.scripts.train \
 This training run can be viewed as an example [here](https://wandb.ai/tino/lerobot/runs/rp0k8zvw?nw=nwusertino).
 
 ```bash
-python -m lerobot.record \
+lerobot-record \
   --robot.type=hope_jr_hand \
   --robot.port=/dev/tty.usbmodem58760432281 \
   --robot.id=right \

docs/source/il_robots.mdx

@@ -45,7 +45,7 @@ Note that the `id` associated with a robot is used to store the calibration file
 <hfoptions id="teleoperate_so101">
 <hfoption id="Command">
 ```bash
-python -m lerobot.teleoperate \
+lerobot-teleoperate \
     --robot.type=so101_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.id=my_awesome_follower_arm \
@@ -101,7 +101,7 @@ With `rerun`, you can teleoperate again while simultaneously visualizing the cam
 <hfoptions id="teleoperate_koch_camera">
 <hfoption id="Command">
 ```bash
-python -m lerobot.teleoperate \
+lerobot-teleoperate \
     --robot.type=koch_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.id=my_awesome_follower_arm \
@@ -174,7 +174,7 @@ Now you can record a dataset. To record 5 episodes and upload your dataset to th
 <hfoptions id="record">
 <hfoption id="Command">
 ```bash
-python -m lerobot.record \
+lerobot-record \
     --robot.type=so101_follower \
     --robot.port=/dev/tty.usbmodem585A0076841 \
     --robot.id=my_awesome_follower_arm \
@@ -294,7 +294,7 @@ dataset.push_to_hub()
 
 #### Dataset upload
 
-Locally, your dataset is stored in this folder: `~/.cache/huggingface/lerobot/{repo-id}`. At the end of data recording, your dataset will be uploaded on your Hugging Face page (e.g. https://huggingface.co/datasets/cadene/so101_test) that you can obtain by running:
+Locally, your dataset is stored in this folder: `~/.cache/huggingface/lerobot/{repo-id}`. At the end of data recording, your dataset will be uploaded on your Hugging Face page (e.g. `https://huggingface.co/datasets/${HF_USER}/so101_test`) that you can obtain by running:
 
 ```bash
 echo https://huggingface.co/datasets/${HF_USER}/so101_test
@@ -376,7 +376,7 @@ You can replay the first episode on your robot with either the command below or
 <hfoptions id="replay">
 <hfoption id="Command">
 ```bash
-python -m lerobot.replay \
+lerobot-replay \
     --robot.type=so101_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.id=my_awesome_follower_arm \
@@ -428,10 +428,10 @@ Your robot should replicate movements similar to those you recorded. For example
 
 ## Train a policy
 
-To train a policy to control your robot, use the [`python -m lerobot.scripts.train`](../src/lerobot/scripts/train.py) script. A few arguments are required. Here is an example command:
+To train a policy to control your robot, use the [`lerobot-train`](https://github.com/huggingface/lerobot/blob/main/src/lerobot/scripts/train.py) script. A few arguments are required. Here is an example command:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
   --dataset.repo_id=${HF_USER}/so101_test \
   --policy.type=act \
   --output_dir=outputs/train/act_so101_test \
@@ -444,7 +444,7 @@ python -m lerobot.scripts.train \
 Let's explain the command:
 
 1. We provided the dataset as argument with `--dataset.repo_id=${HF_USER}/so101_test`.
-2. We provided the policy with `policy.type=act`. This loads configurations from [`configuration_act.py`](../src/lerobot/policies/act/configuration_act.py). Importantly, this policy will automatically adapt to the number of motor states, motor actions and cameras of your robot (e.g. `laptop` and `phone`) which have been saved in your dataset.
+2. We provided the policy with `policy.type=act`. This loads configurations from [`configuration_act.py`](https://github.com/huggingface/lerobot/blob/main/src/lerobot/policies/act/configuration_act.py). Importantly, this policy will automatically adapt to the number of motor states, motor actions and cameras of your robot (e.g. `laptop` and `phone`) which have been saved in your dataset.
 3. We provided `policy.device=cuda` since we are training on a Nvidia GPU, but you could use `policy.device=mps` to train on Apple silicon.
 4. We provided `wandb.enable=true` to use [Weights and Biases](https://docs.wandb.ai/quickstart) for visualizing training plots. This is optional but if you use it, make sure you are logged in by running `wandb login`.
 
@@ -453,7 +453,7 @@ Training should take several hours. You will find checkpoints in `outputs/train/
 To resume training from a checkpoint, below is an example command to resume from `last` checkpoint of the `act_so101_test` policy:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
   --config_path=outputs/train/act_so101_test/checkpoints/last/pretrained_model/train_config.json \
   --resume=true
 ```
@@ -490,7 +490,7 @@ You can use the `record` script from [`lerobot/record.py`](https://github.com/hu
 <hfoptions id="eval">
 <hfoption id="Command">
 ```bash
-python -m lerobot.record  \
+lerobot-record  \
   --robot.type=so100_follower \
   --robot.port=/dev/ttyACM1 \
   --robot.cameras="{ up: {type: opencv, index_or_path: /dev/video10, width: 640, height: 480, fps: 30}, side: {type: intelrealsense, serial_number_or_name: 233522074606, width: 640, height: 480, fps: 30}}" \

docs/source/il_sim.mdx

@@ -96,10 +96,10 @@ If you uploaded your dataset to the hub you can [visualize your dataset online](
 
 ## Train a policy
 
-To train a policy to control your robot, use the [`python -m lerobot.scripts.train`](../src/lerobot/scripts/train.py) script. A few arguments are required. Here is an example command:
+To train a policy to control your robot, use the [`lerobot-train`](https://github.com/huggingface/lerobot/blob/main/src/lerobot/scripts/train.py) script. A few arguments are required. Here is an example command:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
   --dataset.repo_id=${HF_USER}/il_gym \
   --policy.type=act \
   --output_dir=outputs/train/il_sim_test \
@@ -111,7 +111,7 @@ python -m lerobot.scripts.train \
 Let's explain the command:
 
 1. We provided the dataset as argument with `--dataset.repo_id=${HF_USER}/il_gym`.
-2. We provided the policy with `policy.type=act`. This loads configurations from [`configuration_act.py`](../src/lerobot/policies/act/configuration_act.py). Importantly, this policy will automatically adapt to the number of motor states, motor actions and cameras of your robot (e.g. `laptop` and `phone`) which have been saved in your dataset.
+2. We provided the policy with `policy.type=act`. This loads configurations from [`configuration_act.py`](https://github.com/huggingface/lerobot/blob/main/src/lerobot/policies/act/configuration_act.py). Importantly, this policy will automatically adapt to the number of motor states, motor actions and cameras of your robot (e.g. `laptop` and `phone`) which have been saved in your dataset.
 3. We provided `policy.device=cuda` since we are training on a Nvidia GPU, but you could use `policy.device=mps` to train on Apple silicon.
 4. We provided `wandb.enable=true` to use [Weights and Biases](https://docs.wandb.ai/quickstart) for visualizing training plots. This is optional but if you use it, make sure you are logged in by running `wandb login`.
 

docs/source/installation.mdx

@@ -1,15 +1,6 @@
 # Installation
 
-## Install LeRobot
-
-Currently only available from source.
-
-Download our source code:
-
-```bash
-git clone https://github.com/huggingface/lerobot.git
-cd lerobot
-```
+## Environment Setup
 
 Create a virtual environment with Python 3.10, using [`Miniconda`](https://docs.anaconda.com/miniconda/install/#quick-command-line-install)
 
@@ -40,12 +31,49 @@ conda install ffmpeg -c conda-forge
 >
 > - _[On Linux only]_ If you want to bring your own ffmpeg: Install [ffmpeg build dependencies](https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu#GettheDependencies) and [compile ffmpeg from source with libsvtav1](https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu#libsvtav1), and make sure you use the corresponding ffmpeg binary to your install with `which ffmpeg`.
 
-Install 🤗 LeRobot:
+## Install LeRobot 🤗
+
+### From Source
+
+First, clone the repository and navigate into the directory:
+
+```bash
+git clone https://github.com/huggingface/lerobot.git
+cd lerobot
+```
+
+Then, install the library in editable mode. This is useful if you plan to contribute to the code.
 
 ```bash
 pip install -e .
 ```
 
+### Installation from PyPI
+
+**Core Library:**
+Install the base package with:
+
+```bash
+pip install lerobot
+```
+
+_This installs only the default dependencies._
+
+**Extra Features:**
+To install additional functionality, use one of the following:
+
+```bash
+pip install 'lerobot[all]'          # All available features
+pip install 'lerobot[aloha,pusht]'  # Specific features (Aloha & Pusht)
+pip install 'lerobot[feetech]'      # Feetech motor support
+```
+
+_Replace `[...]` with your desired features._
+
+**Available Tags:**
+For a full list of optional dependencies, see:
+https://pypi.org/project/lerobot/
+
 ### Troubleshooting
 
 If you encounter build errors, you may need to install additional dependencies: `cmake`, `build-essential`, and `ffmpeg libs`.

docs/source/koch.mdx

@@ -31,7 +31,7 @@ pip install -e ".[dynamixel]"
 To find the port for each bus servo adapter, run this script:
 
 ```bash
-python -m lerobot.find_port
+lerobot-find-port
 ```
 
 <hfoptions id="example">
@@ -98,7 +98,7 @@ For a visual reference on how to set the motor ids please refer to [this video](
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --robot.type=koch_follower \
     --robot.port=/dev/tty.usbmodem575E0031751 # <- paste here the port found at previous step
 ```
@@ -174,7 +174,7 @@ Do the same steps for the leader arm but modify the command or script accordingl
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --teleop.type=koch_leader \
     --teleop.port=/dev/tty.usbmodem575E0031751 \  # <- paste here the port found at previous step
 ```
@@ -211,7 +211,7 @@ Run the following command or API example to calibrate the follower arm:
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --robot.type=koch_follower \
     --robot.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --robot.id=my_awesome_follower_arm  # <- Give the robot a unique name
@@ -249,7 +249,7 @@ Do the same steps to calibrate the leader arm, run the following command or API
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=koch_leader \
     --teleop.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --teleop.id=my_awesome_leader_arm  # <- Give the robot a unique name

docs/source/lekiwi.mdx

@@ -60,7 +60,7 @@ First, we will assemble the two SO100/SO101 arms. One to attach to the mobile ba
 To find the port for each bus servo adapter, run this script:
 
 ```bash
-python -m lerobot.find_port
+lerobot-find-port
 ```
 
 <hfoptions id="example">
@@ -116,7 +116,7 @@ The instructions for configuring the motors can be found in the SO101 [docs](./s
 You can run this command to setup motors for LeKiwi. It will first setup the motors for arm (id 6..1) and then setup motors for wheels (9,8,7)
 
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --robot.type=lekiwi \
     --robot.port=/dev/tty.usbmodem58760431551 # <- paste here the port found at previous step
 ```
@@ -174,7 +174,7 @@ The calibration process is very important because it allows a neural network tra
 Make sure the arm is connected to the Raspberry Pi and run this script or API example (on the Raspberry Pi via SSH) to launch calibration of the follower arm:
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --robot.type=lekiwi \
     --robot.id=my_awesome_kiwi # <- Give the robot a unique name
 ```
@@ -193,7 +193,7 @@ Then, to calibrate the leader arm (which is attached to the laptop/pc). Run the
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=so100_leader \
     --teleop.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --teleop.id=my_awesome_leader_arm # <- Give the robot a unique name

docs/source/policy_act_README.md

@@ -0,0 +1,14 @@
+## Paper
+
+https://tonyzhaozh.github.io/aloha
+
+## Citation
+
+```bibtex
+@article{zhao2023learning,
+  title={Learning fine-grained bimanual manipulation with low-cost hardware},
+  author={Zhao, Tony Z and Kumar, Vikash and Levine, Sergey and Finn, Chelsea},
+  journal={arXiv preprint arXiv:2304.13705},
+  year={2023}
+}
+```

docs/source/policy_diffusion_README.md

@@ -0,0 +1,14 @@
+## Paper
+
+https://diffusion-policy.cs.columbia.edu
+
+## Citation
+
+```bibtex
+@article{chi2024diffusionpolicy,
+	author = {Cheng Chi and Zhenjia Xu and Siyuan Feng and Eric Cousineau and Yilun Du and Benjamin Burchfiel and Russ Tedrake and Shuran Song},
+	title ={Diffusion Policy: Visuomotor Policy Learning via Action Diffusion},
+	journal = {The International Journal of Robotics Research},
+	year = {2024},
+}
+```

docs/source/policy_smolvla_README.md

@@ -0,0 +1,14 @@
+## Paper
+
+https://arxiv.org/abs/2506.01844
+
+## Citation
+
+```bibtex
+@article{shukor2025smolvla,
+  title={SmolVLA: A Vision-Language-Action Model for Affordable and Efficient Robotics},
+  author={Shukor, Mustafa and Aubakirova, Dana and Capuano, Francesco and Kooijmans, Pepijn and Palma, Steven and Zouitine, Adil and Aractingi, Michel and Pascal, Caroline and Russi, Martino and Marafioti, Andres and Alibert, Simon and Cord, Matthieu and Wolf, Thomas and Cadene, Remi},
+  journal={arXiv preprint arXiv:2506.01844},
+  year={2025}
+}
+```

docs/source/policy_tdmpc_README.md

@@ -0,0 +1,14 @@
+## Paper
+
+https://www.nicklashansen.com/td-mpc/
+
+## Citation
+
+```bibtex
+@inproceedings{Hansen2022tdmpc,
+	title={Temporal Difference Learning for Model Predictive Control},
+	author={Nicklas Hansen and Xiaolong Wang and Hao Su},
+	booktitle={ICML},
+	year={2022}
+}
+```

docs/source/policy_vqbet_README.md

@@ -0,0 +1,14 @@
+## Paper
+
+https://sjlee.cc/vq-bet/
+
+## Citation
+
+```bibtex
+@article{lee2024behavior,
+  title={Behavior generation with latent actions},
+  author={Lee, Seungjae and Wang, Yibin and Etukuru, Haritheja and Kim, H Jin and Shafiullah, Nur Muhammad Mahi and Pinto, Lerrel},
+  journal={arXiv preprint arXiv:2403.03181},
+  year={2024}
+}
+```

docs/source/porting_datasets_v3.mdx

@@ -0,0 +1,321 @@
+# Porting Large Datasets to LeRobot Dataset v3.0
+
+This tutorial explains how to port large-scale robotic datasets to the LeRobot Dataset v3.0 format. We'll use the **DROID 1.0.1** dataset as our primary example, which demonstrates handling multi-terabyte datasets with thousands of shards across SLURM clusters.
+
+## File Organization: v2.1 vs v3.0
+
+Dataset v3.0 fundamentally changes how data is organized and stored:
+
+**v2.1 Structure (Episode-based)**:
+
+```
+dataset/
+├── data/chunk-000/episode_000000.parquet
+├── data/chunk-000/episode_000001.parquet
+├── videos/chunk-000/camera/episode_000000.mp4
+└── meta/episodes.jsonl
+```
+
+**v3.0 Structure (File-based)**:
+
+```
+dataset/
+├── data/chunk-000/file-000.parquet        # Multiple episodes per file
+├── videos/camera/chunk-000/file-000.mp4   # Consolidated video chunks
+└── meta/episodes/chunk-000/file-000.parquet  # Structured metadata
+```
+
+This transition from individual episode files to file-based chunks dramatically improves performance and reduces storage overhead.
+
+## What's New in Dataset v3.0
+
+Dataset v3.0 introduces significant improvements for handling large datasets:
+
+### 🏗️ **Enhanced File Organization**
+
+- **File-based structure**: Episodes are now grouped into chunked files rather than individual episode files
+- **Configurable file sizes**: for data and video files
+- **Improved storage efficiency**: Better compression and reduced overhead
+
+### 📊 **Modern Metadata Management**
+
+- **Parquet-based metadata**: Replaced JSON Lines with efficient parquet format
+- **Structured episode access**: Direct pandas DataFrame access via `dataset.meta.episodes`
+- **Per-episode statistics**: Enhanced statistics tracking at episode level
+
+### 🚀 **Performance Enhancements**
+
+- **Memory-mapped access**: Improved RAM usage through PyArrow memory mapping
+- **Faster loading**: Significantly reduced dataset initialization time
+- **Better scalability**: Designed for datasets with millions of episodes
+
+## Prerequisites
+
+Before porting large datasets, ensure you have:
+
+- **LeRobot installed** with v3.0 support. Follow our [Installation Guide](./installation).
+- **Sufficient storage**: Raw datasets can be very large (e.g., DROID requires 2TB)
+- **Cluster access** (recommended for large datasets): SLURM or similar job scheduler
+- **Dataset-specific dependencies**: For DROID, you'll need TensorFlow Dataset utilities
+
+## Understanding the DROID Dataset
+
+[DROID 1.0.1](https://droid-dataset.github.io/droid/the-droid-dataset) is an excellent example of a large-scale robotic dataset:
+
+- **Size**: 1.7TB (RLDS format), 8.7TB (raw data)
+- **Structure**: 2048 pre-defined TensorFlow dataset shards
+- **Content**: 76,000+ robot manipulation trajectories from Franka Emika Panda robots
+- **Scope**: Real-world manipulation tasks across multiple environments and objects
+- **Format**: Originally in TensorFlow Records/RLDS format, requiring conversion to LeRobot format
+- **Hosting**: Google Cloud Storage with public access via `gsutil`
+
+The dataset contains diverse manipulation demonstrations with:
+
+- Multiple camera views (wrist camera, exterior cameras)
+- Natural language task descriptions
+- Robot proprioceptive state and actions
+- Success/failure annotations
+
+### DROID Features Schema
+
+```python
+DROID_FEATURES = {
+    # Episode markers
+    "is_first": {"dtype": "bool", "shape": (1,)},
+    "is_last": {"dtype": "bool", "shape": (1,)},
+    "is_terminal": {"dtype": "bool", "shape": (1,)},
+
+    # Language instructions
+    "language_instruction": {"dtype": "string", "shape": (1,)},
+    "language_instruction_2": {"dtype": "string", "shape": (1,)},
+    "language_instruction_3": {"dtype": "string", "shape": (1,)},
+
+    # Robot state
+    "observation.state.gripper_position": {"dtype": "float32", "shape": (1,)},
+    "observation.state.cartesian_position": {"dtype": "float32", "shape": (6,)},
+    "observation.state.joint_position": {"dtype": "float32", "shape": (7,)},
+
+    # Camera observations
+    "observation.images.wrist_left": {"dtype": "image"},
+    "observation.images.exterior_1_left": {"dtype": "image"},
+    "observation.images.exterior_2_left": {"dtype": "image"},
+
+    # Actions
+    "action.gripper_position": {"dtype": "float32", "shape": (1,)},
+    "action.cartesian_position": {"dtype": "float32", "shape": (6,)},
+    "action.joint_position": {"dtype": "float32", "shape": (7,)},
+
+    # Standard LeRobot format
+    "observation.state": {"dtype": "float32", "shape": (8,)},  # joints + gripper
+    "action": {"dtype": "float32", "shape": (8,)},  # joints + gripper
+}
+```
+
+## Approach 1: Single Computer Porting
+
+### Step 1: Install Dependencies
+
+For DROID specifically:
+
+```bash
+pip install tensorflow
+pip install tensorflow_datasets
+```
+
+For other datasets, install the appropriate readers for your source format.
+
+### Step 2: Download Raw Data
+
+Download DROID from Google Cloud Storage using `gsutil`:
+
+```bash
+# Install Google Cloud SDK if not already installed
+# https://cloud.google.com/sdk/docs/install
+
+# Download the full RLDS dataset (1.7TB)
+gsutil -m cp -r gs://gresearch/robotics/droid/1.0.1 /your/data/
+
+# Or download just the 100-episode sample (2GB) for testing
+gsutil -m cp -r gs://gresearch/robotics/droid_100 /your/data/
+```
+
+> [!WARNING]
+> Large datasets require substantial time and storage:
+>
+> - **Full DROID (1.7TB)**: Several days to download depending on bandwidth
+> - **Processing time**: 7+ days for local porting of full dataset
+> - **Upload time**: 3+ days to push to Hugging Face Hub
+> - **Local storage**: ~400GB for processed LeRobot format
+
+### Step 3: Port the Dataset
+
+```bash
+python examples/port_datasets/port_droid_rlds.py \
+    --raw-dir /your/data/droid/1.0.1 \
+    --repo-id your_id/droid_1.0.1 \
+    --push-to-hub
+```
+
+### Development and Testing
+
+For development, you can port a single shard:
+
+```bash
+python examples/port_datasets/port_droid_rlds.py \
+    --raw-dir /your/data/droid/1.0.1 \
+    --repo-id your_id/droid_1.0.1_test \
+    --num-shards 2048 \
+    --shard-index 0
+```
+
+This approach works for smaller datasets or testing, but large datasets require cluster computing.
+
+## Approach 2: SLURM Cluster Porting (Recommended)
+
+For large datasets like DROID, parallel processing across multiple nodes dramatically reduces processing time.
+
+### Step 1: Install Cluster Dependencies
+
+```bash
+pip install datatrove  # Hugging Face's distributed processing library
+```
+
+### Step 2: Configure Your SLURM Environment
+
+Find your partition information:
+
+```bash
+sinfo --format="%R"  # List available partitions
+sinfo -N -p your_partition -h -o "%N cpus=%c mem=%m"  # Check resources
+```
+
+Choose a **CPU partition** - no GPU needed for dataset porting.
+
+### Step 3: Launch Parallel Porting Jobs
+
+```bash
+python examples/port_datasets/slurm_port_shards.py \
+    --raw-dir /your/data/droid/1.0.1 \
+    --repo-id your_id/droid_1.0.1 \
+    --logs-dir /your/logs \
+    --job-name port_droid \
+    --partition your_partition \
+    --workers 2048 \
+    --cpus-per-task 8 \
+    --mem-per-cpu 1950M
+```
+
+#### Parameter Guidelines
+
+- **`--workers`**: Number of parallel jobs (max 2048 for DROID's shard count)
+- **`--cpus-per-task`**: 8 CPUs recommended for frame encoding parallelization
+- **`--mem-per-cpu`**: ~16GB total RAM (8×1950M) for loading raw frames
+
+> [!TIP]
+> Start with fewer workers (e.g., 100) to test your cluster configuration before launching thousands of jobs.
+
+### Step 4: Monitor Progress
+
+Check running jobs:
+
+```bash
+squeue -u $USER
+```
+
+Monitor overall progress:
+
+```bash
+jobs_status /your/logs
+```
+
+Inspect individual job logs:
+
+```bash
+less /your/logs/port_droid/slurm_jobs/JOB_ID_WORKER_ID.out
+```
+
+Debug failed jobs:
+
+```bash
+failed_logs /your/logs/port_droid
+```
+
+### Step 5: Aggregate Shards
+
+Once all porting jobs complete:
+
+```bash
+python examples/port_datasets/slurm_aggregate_shards.py \
+    --repo-id your_id/droid_1.0.1 \
+    --logs-dir /your/logs \
+    --job-name aggr_droid \
+    --partition your_partition \
+    --workers 2048 \
+    --cpus-per-task 8 \
+    --mem-per-cpu 1950M
+```
+
+### Step 6: Upload to Hub
+
+```bash
+python examples/port_datasets/slurm_upload.py \
+    --repo-id your_id/droid_1.0.1 \
+    --logs-dir /your/logs \
+    --job-name upload_droid \
+    --partition your_partition \
+    --workers 50 \
+    --cpus-per-task 4 \
+    --mem-per-cpu 1950M
+```
+
+> [!NOTE]
+> Upload uses fewer workers (50) since it's network-bound rather than compute-bound.
+
+## Dataset v3.0 File Structure
+
+Your completed dataset will have this modern structure:
+
+```
+dataset/
+├── meta/
+│   ├── episodes/
+│   │   └── chunk-000/
+│   │       └── file-000.parquet    # Episode metadata
+│   ├── tasks.parquet               # Task definitions
+│   ├── stats.json                  # Aggregated statistics
+│   └── info.json                   # Dataset information
+├── data/
+│   └── chunk-000/
+│       └── file-000.parquet        # Consolidated episode data
+└── videos/
+    └── camera_key/
+        └── chunk-000/
+            └── file-000.mp4        # Consolidated video files
+```
+
+This replaces the old episode-per-file structure with efficient, optimally-sized chunks.
+
+## Migrating from Dataset v2.1
+
+If you have existing datasets in v2.1 format, use the migration tool:
+
+```bash
+python src/lerobot/datasets/v30/convert_dataset_v21_to_v30.py \
+    --repo-id your_id/existing_dataset
+```
+
+This automatically:
+
+- Converts file structure to v3.0 format
+- Migrates metadata from JSON Lines to parquet
+- Aggregates statistics and creates per-episode stats
+- Updates version information
+
+## Performance Benefits
+
+Dataset v3.0 provides significant improvements for large datasets:
+
+- **Faster loading**: 3-5x reduction in initialization time
+- **Memory efficiency**: Better RAM usage through memory mapping
+- **Scalable processing**: Handles millions of episodes efficiently
+- **Storage optimization**: Reduced file count and improved compression

docs/source/smolvla.mdx

@@ -54,7 +54,7 @@ If you don't have a gpu device, you can train using our notebook on [![Google Co
 Pass your dataset to the training script using `--dataset.repo_id`. If you want to test your installation, run the following command where we use one of the datasets we collected for the [SmolVLA Paper](https://huggingface.co/papers/2506.01844).
 
 ```bash
-cd lerobot && python -m lerobot.scripts.train \
+cd lerobot && lerobot-train \
   --policy.path=lerobot/smolvla_base \
   --dataset.repo_id=${HF_USER}/mydataset \
   --batch_size=64 \
@@ -73,7 +73,7 @@ cd lerobot && python -m lerobot.scripts.train \
 Fine-tuning is an art. For a complete overview of the options for finetuning, run
 
 ```bash
-python -m lerobot.scripts.train --help
+lerobot-train --help
 ```
 
 <p align="center">
@@ -97,7 +97,7 @@ Similarly for when recording an episode, it is recommended that you are logged i
 Once you are logged in, you can run inference in your setup by doing:
 
 ```bash
-python -m lerobot.record \
+lerobot-record \
   --robot.type=so101_follower \
   --robot.port=/dev/ttyACM0 \ # <- Use your port
   --robot.id=my_blue_follower_arm \ # <- Use your robot id

docs/source/so100.mdx

@@ -26,7 +26,7 @@ Unlike the SO-101, the motor connectors are not easily accessible once the arm i
 To find the port for each bus servo adapter, run this script:
 
 ```bash
-python -m lerobot.find_port
+lerobot-find-port
 ```
 
 <hfoptions id="example">
@@ -93,7 +93,7 @@ For a visual reference on how to set the motor ids please refer to [this video](
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --robot.type=so100_follower \
     --robot.port=/dev/tty.usbmodem585A0076841  # <- paste here the port found at previous step
 ```
@@ -168,7 +168,7 @@ Do the same steps for the leader arm.
 <hfoptions id="setup_motors">
 <hfoption id="Command">
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --teleop.type=so100_leader \
     --teleop.port=/dev/tty.usbmodem575E0031751  # <- paste here the port found at previous step
 ```
@@ -568,7 +568,7 @@ Run the following command or API example to calibrate the follower arm:
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --robot.type=so100_follower \
     --robot.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --robot.id=my_awesome_follower_arm # <- Give the robot a unique name
@@ -606,7 +606,7 @@ Do the same steps to calibrate the leader arm, run the following command or API
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=so100_leader \
     --teleop.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --teleop.id=my_awesome_leader_arm # <- Give the robot a unique name

docs/source/so101.mdx

@@ -162,7 +162,7 @@ It is advisable to install one 3-pin cable in the motor after placing them befor
 To find the port for each bus servo adapter, connect MotorBus to your computer via USB and power. Run the following script and disconnect the MotorBus when prompted:
 
 ```bash
-python -m lerobot.find_port
+lerobot-find-port
 ```
 
 <hfoptions id="example">
@@ -240,7 +240,7 @@ Connect the usb cable from your computer and the power supply to the follower ar
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --robot.type=so101_follower \
     --robot.port=/dev/tty.usbmodem585A0076841  # <- paste here the port found at previous step
 ```
@@ -316,7 +316,7 @@ Do the same steps for the leader arm.
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --teleop.type=so101_leader \
     --teleop.port=/dev/tty.usbmodem575E0031751  # <- paste here the port found at previous step
 ```
@@ -353,7 +353,7 @@ Run the following command or API example to calibrate the follower arm:
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --robot.type=so101_follower \
     --robot.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --robot.id=my_awesome_follower_arm # <- Give the robot a unique name
@@ -402,7 +402,7 @@ Do the same steps to calibrate the leader arm, run the following command or API
 <hfoption id="Command">
 
 ```bash
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=so101_leader \
     --teleop.port=/dev/tty.usbmodem58760431551 \ # <- The port of your robot
     --teleop.id=my_awesome_leader_arm # <- Give the robot a unique name

examples/1_load_lerobot_dataset.py

@@ -92,11 +92,11 @@ print(dataset.hf_dataset)
 # LeRobot datasets also subclasses PyTorch datasets so you can do everything you know and love from working
 # with the latter, like iterating through the dataset.
 # The __getitem__ iterates over the frames of the dataset. Since our datasets are also structured by
-# episodes, you can access the frame indices of any episode using the episode_data_index. Here, we access
+# episodes, you can access the frame indices of any episode using dataset.meta.episodes. Here, we access
 # frame indices associated to the first episode:
 episode_index = 0
-from_idx = dataset.episode_data_index["from"][episode_index].item()
-to_idx = dataset.episode_data_index["to"][episode_index].item()
+from_idx = dataset.meta.episodes["dataset_from_index"][episode_index]
+to_idx = dataset.meta.episodes["dataset_to_index"][episode_index]
 
 # Then we grab all the image frames from the first camera:
 camera_key = dataset.meta.camera_keys[0]

examples/4_train_policy_with_script.md

@@ -62,7 +62,7 @@ By default, every field takes its default value specified in the dataclass. If a
 Let's say that we want to train [Diffusion Policy](../src/lerobot/policies/diffusion) on the [pusht](https://huggingface.co/datasets/lerobot/pusht) dataset, using the [gym_pusht](https://github.com/huggingface/gym-pusht) environment for evaluation. The command to do so would look like this:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --dataset.repo_id=lerobot/pusht \
     --policy.type=diffusion \
     --env.type=pusht
@@ -77,7 +77,7 @@ Let's break this down:
 Let's see another example. Let's say you've been training [ACT](../src/lerobot/policies/act) on [lerobot/aloha_sim_insertion_human](https://huggingface.co/datasets/lerobot/aloha_sim_insertion_human) using the [gym-aloha](https://github.com/huggingface/gym-aloha) environment for evaluation with:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --policy.type=act \
     --dataset.repo_id=lerobot/aloha_sim_insertion_human \
     --env.type=aloha \
@@ -90,7 +90,7 @@ We now want to train a different policy for aloha on another task. We'll change
 Looking at the [`AlohaEnv`](../src/lerobot/envs/configs.py) config, the task is `"AlohaInsertion-v0"` by default, which corresponds to the task we trained on in the command above. The [gym-aloha](https://github.com/huggingface/gym-aloha?tab=readme-ov-file#description) environment also has the `AlohaTransferCube-v0` task which corresponds to this other task we want to train on. Putting this together, we can train this new policy on this different task using:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --policy.type=act \
     --dataset.repo_id=lerobot/aloha_sim_transfer_cube_human \
     --env.type=aloha \
@@ -127,7 +127,7 @@ Now, let's assume that we want to reproduce the run just above. That run has pro
 We can then simply load the config values from this file using:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --config_path=outputs/train/act_aloha_transfer/checkpoints/last/pretrained_model/ \
     --output_dir=outputs/train/act_aloha_transfer_2
 ```
@@ -137,7 +137,7 @@ python -m lerobot.scripts.train \
 Similarly to Hydra, we can still override some parameters in the CLI if we want to, e.g.:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --config_path=outputs/train/act_aloha_transfer/checkpoints/last/pretrained_model/ \
     --output_dir=outputs/train/act_aloha_transfer_2
     --policy.n_action_steps=80
@@ -148,7 +148,7 @@ python -m lerobot.scripts.train \
 `--config_path` can also accept the repo_id of a repo on the hub that contains a `train_config.json` file, e.g. running:
 
 ```bash
-python -m lerobot.scripts.train --config_path=lerobot/diffusion_pusht
+lerobot-train --config_path=lerobot/diffusion_pusht
 ```
 
 will start a training run with the same configuration used for training [lerobot/diffusion_pusht](https://huggingface.co/lerobot/diffusion_pusht)
@@ -160,7 +160,7 @@ Being able to resume a training run is important in case it crashed or aborted f
 Let's reuse the command from the previous run and add a few more options:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --policy.type=act \
     --dataset.repo_id=lerobot/aloha_sim_transfer_cube_human \
     --env.type=aloha \
@@ -179,7 +179,7 @@ INFO 2025-01-24 16:10:56 ts/train.py:263 Checkpoint policy after step 100
 Now let's simulate a crash by killing the process (hit `ctrl`+`c`). We can then simply resume this run from the last checkpoint available with:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --config_path=outputs/train/run_resumption/checkpoints/last/pretrained_model/ \
     --resume=true
 ```
@@ -190,7 +190,7 @@ Another reason for which you might want to resume a run is simply to extend trai
 You could double the number of steps of the previous run with:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --config_path=outputs/train/run_resumption/checkpoints/last/pretrained_model/ \
     --resume=true \
     --steps=200000
@@ -224,7 +224,7 @@ In addition to the features currently in Draccus, we've added a special `.path`
 For example, we could fine-tune a [policy pre-trained on the aloha transfer task](https://huggingface.co/lerobot/act_aloha_sim_transfer_cube_human) on the aloha insertion task. We can achieve this with:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --policy.path=lerobot/act_aloha_sim_transfer_cube_human \
     --dataset.repo_id=lerobot/aloha_sim_insertion_human \
     --env.type=aloha \
@@ -270,7 +270,7 @@ We'll summarize here the main use cases to remember from this tutorial.
 #### Train a policy from scratch – CLI
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --policy.type=act \  # <- select 'act' policy
     --env.type=pusht \  # <- select 'pusht' environment
     --dataset.repo_id=lerobot/pusht  # <- train on this dataset
@@ -279,7 +279,7 @@ python -m lerobot.scripts.train \
 #### Train a policy from scratch - config file + CLI
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --config_path=path/to/pretrained_model \  # <- can also be a repo_id
     --policy.n_action_steps=80  # <- you may still override values
 ```
@@ -287,7 +287,7 @@ python -m lerobot.scripts.train \
 #### Resume/continue a training run
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --config_path=checkpoint/pretrained_model/ \
     --resume=true \
     --steps=200000  # <- you can change some training parameters
@@ -296,7 +296,7 @@ python -m lerobot.scripts.train \
 #### Fine-tuning
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
     --policy.path=lerobot/act_aloha_sim_transfer_cube_human \  # <- can also be a local path to a checkpoint
     --dataset.repo_id=lerobot/aloha_sim_insertion_human \
     --env.type=aloha \

examples/backward_compatibility/replay.py

@@ -18,7 +18,7 @@ Replays the actions of an episode from a dataset on a robot.
 Example:
 
 ```shell
-python -m lerobot.replay \
+lerobot-replay \
     --robot.type=so100_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.id=black \

examples/port_datasets/convert_rt1_example.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# Example script for converting RT-1 dataset using SLURM
+# Make sure to modify the paths and parameters according to your setup
+
+# Configuration
+RAW_DIR="/path/to/datasets/fractal20220817_data/0.1.0"
+REPO_ID="your_username/rt1_lerobot"
+LOGS_DIR="/path/to/logs"
+PARTITION="cpu"  # Your SLURM partition name
+
+# Step 1: Convert dataset using distributed processing
+echo "Starting RT-1 dataset conversion..."
+python examples/port_datasets/slurm_port_shards.py \
+    --raw-dir "$RAW_DIR" \
+    --repo-id "$REPO_ID" \
+    --dataset-type rlds \
+    --logs-dir "$LOGS_DIR" \
+    --job-name rt1_conversion \
+    --workers 32 \
+    --num-shards 32 \
+    --partition "$PARTITION" \
+    --cpus-per-task 4 \
+    --mem-per-cpu 2G \
+    --slurm 1
+
+# Step 2: Wait for jobs to complete (you can monitor with squeue)
+echo "Conversion jobs submitted. Monitor with 'squeue -u \$USER'"
+echo "Once all jobs complete, run the aggregation step:"
+echo ""
+echo "python examples/port_datasets/slurm_aggregate_shards.py \\"
+echo "    --repo-id $REPO_ID \\"
+echo "    --push-to-hub"
+
+# Uncomment the following lines if you want to automatically aggregate
+# (but make sure all shards are complete first)
+
+# echo "Waiting for jobs to complete..."
+# while [ $(squeue -u $USER -h | wc -l) -gt 0 ]; do
+#     echo "Jobs still running, waiting 60 seconds..."
+#     sleep 60
+# done
+
+# echo "All jobs completed. Starting aggregation..."
+# python examples/port_datasets/slurm_aggregate_shards.py \
+#     --repo-id "$REPO_ID" \
+#     --push-to-hub

examples/port_datasets/display_error_files.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import json
+from pathlib import Path
+
+
+def find_missing_workers(completions_dir, world_size):
+    """Find workers that are not completed and returns their indices."""
+    full = list(range(world_size))
+
+    completed = []
+    for path in completions_dir.glob("*"):
+        if path.name in [".", ".."]:
+            continue
+        index = path.name.lstrip("0")
+        index = 0 if index == "" else int(index)
+        completed.append(index)
+
+    missing_workers = set(full) - set(completed)
+    return missing_workers
+
+
+def find_output_files(slurm_dir, worker_indices):
+    """Find output files associated to worker indices, and return tuples
+    of (worker index, output file path)
+    """
+    out_files = []
+    for path in slurm_dir.glob("*.out"):
+        _, worker_id = path.name.replace(".out", "").split("_")
+        worker_id = int(worker_id)
+        if worker_id in worker_indices:
+            out_files.append((worker_id, path))
+    return out_files
+
+
+def display_error_files(logs_dir, job_name):
+    executor_path = Path(logs_dir) / job_name / "executor.json"
+    completions_dir = Path(logs_dir) / job_name / "completions"
+
+    with open(executor_path) as f:
+        executor = json.load(f)
+
+    missing_workers = find_missing_workers(completions_dir, executor["world_size"])
+
+    for missing in sorted(missing_workers)[::-1]:
+        print(missing)
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--logs-dir",
+        type=str,
+        help="Path to logs directory for `datatrove`.",
+    )
+    parser.add_argument(
+        "--job-name",
+        type=str,
+        default="port_droid",
+        help="Job name used in slurm, and name of the directory created inside the provided logs directory.",
+    )
+
+    args = parser.parse_args()
+
+    display_error_files(**vars(args))
+
+
+if __name__ == "__main__":
+    main()

examples/port_datasets/oxe_utils/__init__.py

@@ -0,0 +1,15 @@
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Open X-Embodiment utilities for dataset conversion."""

examples/port_datasets/oxe_utils/configs.py

@@ -0,0 +1,854 @@
+"""
+Adapt from https://github.com/openvla/openvla/blob/main/prismatic/vla/datasets/rlds/oxe/configs.py
+configs.py
+
+Defines per-dataset configuration (kwargs) for each dataset in Open-X Embodiment.
+
+Configuration adopts the following structure:
+    image_obs_keys:
+        primary: primary external RGB
+        secondary: secondary external RGB
+        wrist: wrist RGB
+
+    depth_obs_keys:
+        primary: primary external depth
+        secondary: secondary external depth
+        wrist: wrist depth
+
+    # Always 8-dim =>> changes based on `StateEncoding`
+    state_obs_keys:
+        StateEncoding.POS_EULER:    EEF XYZ (3) + Roll-Pitch-Yaw (3) + <PAD> (1) + Gripper Open/Close (1)
+        StateEncoding.POS_QUAT:     EEF XYZ (3) + Quaternion (4) + Gripper Open/Close (1)
+        StateEncoding.JOINT:        Joint Angles (7, <PAD> if fewer) + Gripper Open/Close (1)
+
+    state_encoding: Type of `StateEncoding`
+    action_encoding: Type of action encoding (e.g., EEF Position vs. Joint Position)
+"""
+
+from enum import IntEnum
+
+import tensorflow as tf
+
+
+def zero_action_filter(traj: dict) -> bool:
+    """
+    Filters transitions whose actions are all-0 (only relative actions, no gripper action).
+    Note: this filter is applied *after* action normalization, so need to compare to "normalized 0".
+    """
+    DROID_Q01 = tf.convert_to_tensor(  # NOQA: N806
+        [
+            -0.7776297926902771,
+            -0.5803514122962952,
+            -0.5795090794563293,
+            -0.6464047729969025,
+            -0.7041108310222626,
+            -0.8895104378461838,
+        ]
+    )
+    DROID_Q99 = tf.convert_to_tensor(  # NOQA: N806
+        [
+            0.7597932070493698,
+            0.5726242214441299,
+            0.7351000607013702,
+            0.6705610305070877,
+            0.6464948207139969,
+            0.8897542208433151,
+        ]
+    )
+    DROID_NORM_0_ACT = (  # NOQA: N806
+        2 * (tf.zeros_like(traj["action"][:, :6]) - DROID_Q01) / (DROID_Q99 - DROID_Q01 + 1e-8) - 1
+    )
+
+    return tf.reduce_any(tf.math.abs(traj["action"][:, :6] - DROID_NORM_0_ACT) > 1e-5)
+
+
+# Defines Proprioceptive State Encoding Schemes
+class StateEncoding(IntEnum):
+    # fmt: off
+    NONE = -1               # No Proprioceptive State
+    POS_EULER = 1           # EEF XYZ (3) + Roll-Pitch-Yaw (3) + <PAD> (1) + Gripper Open/Close (1)
+    POS_QUAT = 2            # EEF XYZ (3) + Quaternion (4) + Gripper Open/Close (1)
+    JOINT = 3               # Joint Angles (7, <PAD> if fewer) + Gripper Open/Close (1)
+    JOINT_BIMANUAL = 4      # Joint Angles (2 x [ Joint Angles (6) + Gripper Open/Close (1) ])
+    # fmt: on
+
+
+# Defines Action Encoding Schemes
+class ActionEncoding(IntEnum):
+    # fmt: off
+    EEF_POS = 1             # EEF Delta XYZ (3) + Roll-Pitch-Yaw (3) + Gripper Open/Close (1)
+    EEF_POS_QUAT = 5        # EEF Delta XYZ (3) + Quaternion (4) + Gripper Open/Close (1)
+    JOINT_POS = 2           # Joint Delta Position (7) + Gripper Open/Close (1)
+    JOINT_POS_BIMANUAL = 3  # Joint Delta Position (2 x [ Joint Delta Position (6) + Gripper Open/Close (1) ])
+    EEF_R6 = 4              # EEF Delta XYZ (3) + R6 (6) + Gripper Open/Close (1)
+    # fmt: on
+
+
+# === Individual Dataset Configs ===
+OXE_DATASET_CONFIGS = {
+    "fractal20220817_data": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["base_pose_tool_reached", "gripper_closed"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3,
+        "robot_type": "Google Robot",
+    },
+    "kuka": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": [
+            "clip_function_input/base_pose_tool_reached",
+            "gripper_closed",
+        ],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Kuka iiwa",
+    },
+    "bridge_oxe": {  # Version of Bridge V2 in Open X-Embodiment mixture
+        "image_obs_keys": {"primary": "image", "secondary": "image_1", "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "WidowX",
+    },
+    "bridge_orig": {  # Original version of Bridge V2 from project website
+        "image_obs_keys": {"primary": "image_0", "secondary": "image_1", "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "WidowX",
+    },
+    "bridge_dataset": {  # Original version of Bridge V2 from project website
+        "image_obs_keys": {"primary": "image_0", "secondary": "image_1", "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "WidowX",
+    },
+    "taco_play": {
+        "image_obs_keys": {
+            "primary": "rgb_static",
+            "secondary": None,
+            "wrist": "rgb_gripper",
+        },
+        "depth_obs_keys": {
+            "primary": "depth_static",
+            "secondary": None,
+            "wrist": "depth_gripper",
+        },
+        "state_obs_keys": ["state_eef", None, "state_gripper"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 15,
+        "robot_type": "Franka",
+    },
+    "jaco_play": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "image_wrist",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state_eef", None, "state_gripper"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Jaco 2",
+    },
+    "berkeley_cable_routing": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": "top_image",
+            "wrist": "wrist45_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["robot_state", None],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    "roboturk": {
+        "image_obs_keys": {"primary": "front_rgb", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": [None, None, None, None, None, None, None, None],
+        "state_encoding": StateEncoding.NONE,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Sawyer",
+    },
+    "nyu_door_opening_surprising_effectiveness": {
+        "image_obs_keys": {"primary": None, "secondary": None, "wrist": "image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": [None, None, None, None, None, None, None, None],
+        "state_encoding": StateEncoding.NONE,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3,
+        "robot_type": "Hello Stretch",
+    },
+    "viola": {
+        "image_obs_keys": {
+            "primary": "agentview_rgb",
+            "secondary": None,
+            "wrist": "eye_in_hand_rgb",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["joint_states", "gripper_states"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "berkeley_autolab_ur5": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "hand_image",
+        },
+        "depth_obs_keys": {"primary": "depth", "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "UR5",
+    },
+    "toto": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 30,
+        "robot_type": "Franka",
+    },
+    "language_table": {
+        "image_obs_keys": {"primary": "rgb", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["effector_translation", None, None, None, None, None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "xArm",
+    },
+    "columbia_cairlab_pusht_real": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["robot_state", None, None, None, None, None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "UR5",
+    },
+    "stanford_kuka_multimodal_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["ee_position", "ee_orientation", None],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Kuka iiwa",
+    },
+    "nyu_rot_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3,
+        "robot_type": "xArm",
+    },
+    "stanford_hydra_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    "austin_buds_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "nyu_franka_play_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": "image_additional_view",
+            "wrist": None,
+        },
+        "depth_obs_keys": {
+            "primary": "depth",
+            "secondary": "depth_additional_view",
+            "wrist": None,
+        },
+        "state_obs_keys": ["eef_state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3,
+        "robot_type": "Franka",
+    },
+    "maniskill_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {
+            "primary": "depth",
+            "secondary": None,
+            "wrist": "wrist_depth",
+        },
+        "state_obs_keys": ["tcp_pose", "gripper_state"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "furniture_bench_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    "cmu_franka_exploration_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "highres_image",
+            "secondary": None,
+            "wrist": None,
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": [None, None, None, None, None, None, None, None],
+        "state_encoding": StateEncoding.NONE,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    "ucsd_kitchen_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["joint_state", None],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 2,
+        "robot_type": "xArm",
+    },
+    "ucsd_pick_and_place_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3,
+        "robot_type": "xArm",
+    },
+    "austin_sailor_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "austin_sirius_dataset_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "bc_z": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": [
+            "present/xyz",
+            "present/axis_angle",
+            None,
+            "present/sensed_close",
+        ],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Google Robot",
+    },
+    "utokyo_pr2_opening_fridge_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "PR2",
+    },
+    "utokyo_pr2_tabletop_manipulation_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "PR2",
+    },
+    "utokyo_xarm_pick_and_place_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": "image2",
+            "wrist": "hand_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["end_effector_pose", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "xArm",
+    },
+    "utokyo_xarm_bimanual_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["pose_r", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "xArm Bimanual",
+    },
+    "robo_net": {
+        "image_obs_keys": {"primary": "image", "secondary": "image1", "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 1,
+        "robot_type": "Multi-Robot",
+    },
+    "berkeley_mvp_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": None, "secondary": None, "wrist": "hand_image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["pose", "gripper"],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.JOINT_POS,
+        "control_frequency": 5,
+        "robot_type": "xArm",
+    },
+    "berkeley_rpt_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": None, "secondary": None, "wrist": "hand_image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["joint_pos", "gripper"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.JOINT_POS,
+        "control_frequency": 30,
+        "robot_type": "Franka",
+    },
+    "kaist_nonprehensile_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None],
+        "state_encoding": StateEncoding.POS_QUAT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    "stanford_mask_vit_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": None,
+        "robot_type": "Sawyer",
+    },
+    "tokyo_u_lsmo_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Cobotta",
+    },
+    "dlr_sara_pour_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "DLR SARA",
+    },
+    "dlr_sara_grid_clamp_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "DLR SARA",
+    },
+    "dlr_edan_shared_control_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "DLR EDAN",
+    },
+    "asu_table_top_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 12.5,
+        "robot_type": "UR5",
+    },
+    "stanford_robocook_converted_externally_to_rlds": {
+        "image_obs_keys": {"primary": "image_1", "secondary": "image_2", "wrist": None},
+        "depth_obs_keys": {"primary": "depth_1", "secondary": "depth_2", "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "imperialcollege_sawyer_wrist_cam": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": [None, None, None, None, None, None, None, "state"],
+        "state_encoding": StateEncoding.NONE,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Sawyer",
+    },
+    "iamlab_cmu_pickup_insert_converted_externally_to_rlds": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["joint_state", "gripper_state"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "uiuc_d3field": {
+        "image_obs_keys": {"primary": "image_1", "secondary": "image_2", "wrist": None},
+        "depth_obs_keys": {"primary": "depth_1", "secondary": "depth_2", "wrist": None},
+        "state_obs_keys": [None, None, None, None, None, None, None, None],
+        "state_encoding": StateEncoding.NONE,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 1,
+        "robot_type": "Kinova Gen3",
+    },
+    "utaustin_mutex": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "berkeley_fanuc_manipulation": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "wrist_image",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["joint_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Fanuc Mate",
+    },
+    "cmu_playing_with_food": {
+        "image_obs_keys": {
+            "primary": "image",
+            "secondary": None,
+            "wrist": "finger_vision_1",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    "cmu_play_fusion": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "cmu_stretch": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["eef_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Hello Stretch",
+    },
+    "berkeley_gnm_recon": {
+        "image_obs_keys": {"primary": None, "secondary": None, "wrist": "image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3,
+        "robot_type": "Jackal",
+    },
+    "berkeley_gnm_cory_hall": {
+        "image_obs_keys": {"primary": None, "secondary": None, "wrist": "image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "RC Car",
+    },
+    "berkeley_gnm_sac_son": {
+        "image_obs_keys": {"primary": None, "secondary": None, "wrist": "image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["state", None, None],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "TurtleBot 2",
+    },
+    # NOTE: modified
+    "droid": {
+        "image_obs_keys": {
+            "primary": "exterior_image_1_left",
+            "secondary": "exterior_image_2_left",
+            "wrist": "wrist_image_left",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 15,
+        "robot_type": "Franka",
+        "aux_kwargs": {
+            "dataset_frame_transform_kwargs": {
+                "chunk_filter_fn": zero_action_filter,
+            },
+        },
+    },
+    "fmb_dataset": {
+        "image_obs_keys": {
+            "primary": "image_side_1",
+            "secondary": "image_side_2",
+            "wrist": "image_wrist_1",
+        },
+        "depth_obs_keys": {
+            "primary": "image_side_1_depth",
+            "secondary": "image_side_2_depth",
+            "wrist": "image_wrist_1_depth",
+        },
+        "state_obs_keys": ["proprio"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Franka",
+    },
+    # NOTE: modified
+    "dobbe": {
+        "image_obs_keys": {"primary": "wrist_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 3.75,
+        "robot_type": "Hello Stretch",
+    },
+    "roboset": {
+        "image_obs_keys": {
+            "primary": "image_left",
+            "secondary": "image_right",
+            "wrist": "image_wrist",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["proprio"],
+        "state_encoding": StateEncoding.JOINT,
+        "action_encoding": ActionEncoding.JOINT_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "rh20t": {
+        "image_obs_keys": {
+            "primary": "image_front",
+            "secondary": "image_side_right",
+            "wrist": "image_wrist",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["proprio"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 10,
+        "robot_type": "Flexiv",
+    },
+    ### T-DROID datasets
+    "tdroid_carrot_in_bowl": {  # "put carrot in bowl" task, 50 demos @ 5 Hz control
+        "image_obs_keys": {"primary": "static_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "static_depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "tdroid_pour_corn_in_pot": {  # "pour corn from red bonawl into steel pot" task, 50 demos @ 5 Hz control
+        "image_obs_keys": {"primary": "static_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "static_depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "tdroid_flip_pot_upright": {  # "flip pot upright" task, 10 demos @ 5 Hz control
+        "image_obs_keys": {"primary": "static_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "static_depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "tdroid_move_object_onto_plate": {  # "move <object> onto plate" task, 150 demos @ 5 Hz control
+        "image_obs_keys": {"primary": "static_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "static_depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "tdroid_knock_object_over": {  # "knock <object> over" task, 70 demos @ 5 Hz control
+        "image_obs_keys": {"primary": "static_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "static_depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    "tdroid_cover_object_with_towel": {  # "cover <object> with towel" task, 45 demos @ 5 Hz control
+        "image_obs_keys": {"primary": "static_image", "secondary": None, "wrist": None},
+        "depth_obs_keys": {"primary": "static_depth_image", "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", None, "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 5,
+        "robot_type": "Franka",
+    },
+    ### DROID Finetuning datasets
+    "droid_wipe": {
+        "image_obs_keys": {
+            "primary": "exterior_image_2_left",
+            "secondary": None,
+            "wrist": "wrist_image_left",
+        },
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["proprio"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 15,
+        "robot_type": "Franka",
+    },
+    # NOTE: modified
+    ### LIBERO datasets (modified versions)
+    "libero_spatial_no_noops": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": "wrist_image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "libero_object_no_noops": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": "wrist_image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "libero_goal_no_noops": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": "wrist_image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+    "libero_10_no_noops": {
+        "image_obs_keys": {"primary": "image", "secondary": None, "wrist": "wrist_image"},
+        "depth_obs_keys": {"primary": None, "secondary": None, "wrist": None},
+        "state_obs_keys": ["EEF_state", "gripper_state"],
+        "state_encoding": StateEncoding.POS_EULER,
+        "action_encoding": ActionEncoding.EEF_POS,
+        "control_frequency": 20,
+        "robot_type": "Franka",
+    },
+}

examples/port_datasets/oxe_utils/transform_utils.py

@@ -0,0 +1,76 @@
+"""
+Copied from https://github.com/openvla/openvla/blob/main/prismatic/vla/datasets/rlds/utils/data_utils.py
+"""
+
+from typing import Any
+
+import tensorflow as tf
+
+
+def binarize_gripper_actions(actions: tf.Tensor) -> tf.Tensor:
+    """
+    Converts gripper actions from continuous to binary values (0 and 1).
+
+    We exploit that fact that most of the time, the gripper is fully open (near 1.0) or fully closed (near 0.0). As it
+    transitions between the two, it sometimes passes through a few intermediate values. We relabel those intermediate
+    values based on the state that is reached _after_ those intermediate values.
+
+    In the edge case that the trajectory ends with an intermediate value, we give up on binarizing and relabel that
+    chunk of intermediate values as the last action in the trajectory.
+
+    The `scan_fn` implements the following logic:
+        new_actions = np.empty_like(actions)
+        carry = actions[-1]
+        for i in reversed(range(actions.shape[0])):
+            if in_between_mask[i]:
+                carry = carry
+            else:
+                carry = float(open_mask[i])
+            new_actions[i] = carry
+    """
+    open_mask, closed_mask = actions > 0.95, actions < 0.05
+    in_between_mask = tf.logical_not(tf.logical_or(open_mask, closed_mask))
+    is_open_float = tf.cast(open_mask, tf.float32)
+
+    def scan_fn(carry, i):
+        return tf.cond(in_between_mask[i], lambda: tf.cast(carry, tf.float32), lambda: is_open_float[i])
+
+    return tf.scan(scan_fn, tf.range(tf.shape(actions)[0]), actions[-1], reverse=True)
+
+
+def invert_gripper_actions(actions: tf.Tensor) -> tf.Tensor:
+    return 1 - actions
+
+
+def rel2abs_gripper_actions(actions: tf.Tensor) -> tf.Tensor:
+    """
+    Converts relative gripper actions (+1 for closing, -1 for opening) to absolute actions (0 = closed; 1 = open).
+
+    Assumes that the first relative gripper is not redundant (i.e. close when already closed)!
+    """
+    # Note =>> -1 for closing, 1 for opening, 0 for no change
+    opening_mask, closing_mask = actions < -0.1, actions > 0.1
+    thresholded_actions = tf.where(opening_mask, 1, tf.where(closing_mask, -1, 0))
+
+    def scan_fn(carry, i):
+        return tf.cond(thresholded_actions[i] == 0, lambda: carry, lambda: thresholded_actions[i])
+
+    # If no relative grasp, assumes open for whole trajectory
+    start = -1 * thresholded_actions[tf.argmax(thresholded_actions != 0, axis=0)]
+    start = tf.cond(start == 0, lambda: 1, lambda: start)
+
+    # Note =>> -1 for closed, 1 for open
+    new_actions = tf.scan(scan_fn, tf.range(tf.shape(actions)[0]), start)
+    new_actions = tf.cast(new_actions, tf.float32) / 2 + 0.5
+
+    return new_actions
+
+
+# === Bridge-V2 =>> Dataset-Specific Transform ===
+def relabel_bridge_actions(traj: dict[str, Any]) -> dict[str, Any]:
+    """Relabels actions to use reached proprioceptive state; discards last timestep (no-action)."""
+    movement_actions = traj["observation"]["state"][1:, :6] - traj["observation"]["state"][:-1, :6]
+    traj_truncated = tf.nest.map_structure(lambda x: x[:-1], traj)
+    traj_truncated["action"] = tf.concat([movement_actions, traj["action"][:-1, -1:]], axis=1)
+
+    return traj_truncated

examples/port_datasets/port_droid.py

@@ -0,0 +1,430 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import logging
+import time
+from pathlib import Path
+
+import numpy as np
+import tensorflow_datasets as tfds
+
+from lerobot.datasets.lerobot_dataset import LeRobotDataset, LeRobotDatasetMetadata
+from lerobot.utils.utils import get_elapsed_time_in_days_hours_minutes_seconds
+
+DROID_SHARDS = 2048
+DROID_FPS = 15
+DROID_ROBOT_TYPE = "Franka"
+
+# Dataset schema slightly adapted from: https://droid-dataset.github.io/droid/the-droid-dataset.html#-dataset-schema
+DROID_FEATURES = {
+    # true on first step of the episode
+    "is_first": {
+        "dtype": "bool",
+        "shape": (1,),
+        "names": None,
+    },
+    # true on last step of the episode
+    "is_last": {
+        "dtype": "bool",
+        "shape": (1,),
+        "names": None,
+    },
+    # true on last step of the episode if it is a terminal step, True for demos
+    "is_terminal": {
+        "dtype": "bool",
+        "shape": (1,),
+        "names": None,
+    },
+    # language_instruction is also stored as "task" to follow LeRobot standard
+    "language_instruction": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "language_instruction_2": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "language_instruction_3": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "observation.state.gripper_position": {
+        "dtype": "float32",
+        "shape": (1,),
+        "names": {
+            "axes": ["gripper"],
+        },
+    },
+    "observation.state.cartesian_position": {
+        "dtype": "float32",
+        "shape": (6,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw"],
+        },
+    },
+    "observation.state.joint_position": {
+        "dtype": "float32",
+        "shape": (7,),
+        "names": {
+            "axes": ["joint_0", "joint_1", "joint_2", "joint_3", "joint_4", "joint_5", "joint_6"],
+        },
+    },
+    # Add this new feature to follow LeRobot standard of using joint position + gripper
+    "observation.state": {
+        "dtype": "float32",
+        "shape": (8,),
+        "names": {
+            "axes": ["joint_0", "joint_1", "joint_2", "joint_3", "joint_4", "joint_5", "joint_6", "gripper"],
+        },
+    },
+    # Initially called wrist_image_left
+    "observation.images.wrist_left": {
+        "dtype": "video",
+        "shape": (180, 320, 3),
+        "names": [
+            "height",
+            "width",
+            "channels",
+        ],
+    },
+    # Initially called exterior_image_1_left
+    "observation.images.exterior_1_left": {
+        "dtype": "video",
+        "shape": (180, 320, 3),
+        "names": [
+            "height",
+            "width",
+            "channels",
+        ],
+    },
+    # Initially called exterior_image_2_left
+    "observation.images.exterior_2_left": {
+        "dtype": "video",
+        "shape": (180, 320, 3),
+        "names": [
+            "height",
+            "width",
+            "channels",
+        ],
+    },
+    "action.gripper_position": {
+        "dtype": "float32",
+        "shape": (1,),
+        "names": {
+            "axes": ["gripper"],
+        },
+    },
+    "action.gripper_velocity": {
+        "dtype": "float32",
+        "shape": (1,),
+        "names": {
+            "axes": ["gripper"],
+        },
+    },
+    "action.cartesian_position": {
+        "dtype": "float32",
+        "shape": (6,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw"],
+        },
+    },
+    "action.cartesian_velocity": {
+        "dtype": "float32",
+        "shape": (6,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw"],
+        },
+    },
+    "action.joint_position": {
+        "dtype": "float32",
+        "shape": (7,),
+        "names": {
+            "axes": ["joint_0", "joint_1", "joint_2", "joint_3", "joint_4", "joint_5", "joint_6"],
+        },
+    },
+    "action.joint_velocity": {
+        "dtype": "float32",
+        "shape": (7,),
+        "names": {
+            "axes": ["joint_0", "joint_1", "joint_2", "joint_3", "joint_4", "joint_5", "joint_6"],
+        },
+    },
+    # This feature was called "action" in RLDS dataset and consists of [6x joint velocities, 1x gripper position]
+    "action.original": {
+        "dtype": "float32",
+        "shape": (7,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw", "gripper"],
+        },
+    },
+    # Add this new feature to follow LeRobot standard of using joint position + gripper
+    "action": {
+        "dtype": "float32",
+        "shape": (8,),
+        "names": {
+            "axes": ["joint_0", "joint_1", "joint_2", "joint_3", "joint_4", "joint_5", "joint_6", "gripper"],
+        },
+    },
+    "discount": {
+        "dtype": "float32",
+        "shape": (1,),
+        "names": None,
+    },
+    "reward": {
+        "dtype": "float32",
+        "shape": (1,),
+        "names": None,
+    },
+    # Meta data that are the same for all frames in the episode
+    "task_category": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "building": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "collector_id": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "date": {
+        "dtype": "string",
+        "shape": (1,),
+        "names": None,
+    },
+    "camera_extrinsics.wrist_left": {
+        "dtype": "float32",
+        "shape": (6,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw"],
+        },
+    },
+    "camera_extrinsics.exterior_1_left": {
+        "dtype": "float32",
+        "shape": (6,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw"],
+        },
+    },
+    "camera_extrinsics.exterior_2_left": {
+        "dtype": "float32",
+        "shape": (6,),
+        "names": {
+            "axes": ["x", "y", "z", "roll", "pitch", "yaw"],
+        },
+    },
+    "is_episode_successful": {
+        "dtype": "bool",
+        "shape": (1,),
+        "names": None,
+    },
+}
+
+
+def is_episode_successful(tf_episode_metadata):
+    # Adapted from: https://github.com/droid-dataset/droid_policy_learning/blob/dd1020eb20d981f90b5ff07dc80d80d5c0cb108b/robomimic/utils/rlds_utils.py#L8
+    return "/success/" in tf_episode_metadata["file_path"].numpy().decode()
+
+
+def generate_lerobot_frames(tf_episode):
+    m = tf_episode["episode_metadata"]
+    frame_meta = {
+        "task_category": m["building"].numpy().decode(),
+        "building": m["building"].numpy().decode(),
+        "collector_id": m["collector_id"].numpy().decode(),
+        "date": m["date"].numpy().decode(),
+        "camera_extrinsics.wrist_left": m["extrinsics_wrist_cam"].numpy(),
+        "camera_extrinsics.exterior_1_left": m["extrinsics_exterior_cam_1"].numpy(),
+        "camera_extrinsics.exterior_2_left": m["extrinsics_exterior_cam_2"].numpy(),
+        "is_episode_successful": np.array([is_episode_successful(m)]),
+    }
+    for f in tf_episode["steps"]:
+        # Dataset schema slightly adapted from: https://droid-dataset.github.io/droid/the-droid-dataset.html#-dataset-schema
+        frame = {
+            "is_first": np.array([f["is_first"].numpy()]),
+            "is_last": np.array([f["is_last"].numpy()]),
+            "is_terminal": np.array([f["is_terminal"].numpy()]),
+            "language_instruction": f["language_instruction"].numpy().decode(),
+            "language_instruction_2": f["language_instruction_2"].numpy().decode(),
+            "language_instruction_3": f["language_instruction_3"].numpy().decode(),
+            "observation.state.gripper_position": f["observation"]["gripper_position"].numpy(),
+            "observation.state.cartesian_position": f["observation"]["cartesian_position"].numpy(),
+            "observation.state.joint_position": f["observation"]["joint_position"].numpy(),
+            "observation.images.wrist_left": f["observation"]["wrist_image_left"].numpy(),
+            "observation.images.exterior_1_left": f["observation"]["exterior_image_1_left"].numpy(),
+            "observation.images.exterior_2_left": f["observation"]["exterior_image_2_left"].numpy(),
+            "action.gripper_position": f["action_dict"]["gripper_position"].numpy(),
+            "action.gripper_velocity": f["action_dict"]["gripper_velocity"].numpy(),
+            "action.cartesian_position": f["action_dict"]["cartesian_position"].numpy(),
+            "action.cartesian_velocity": f["action_dict"]["cartesian_velocity"].numpy(),
+            "action.joint_position": f["action_dict"]["joint_position"].numpy(),
+            "action.joint_velocity": f["action_dict"]["joint_velocity"].numpy(),
+            "discount": np.array([f["discount"].numpy()]),
+            "reward": np.array([f["reward"].numpy()]),
+            "action.original": f["action"].numpy(),
+        }
+
+        # language_instruction is also stored as "task" to follow LeRobot standard
+        frame["task"] = frame["language_instruction"]
+
+        # Add this new feature to follow LeRobot standard of using joint position + gripper
+        frame["observation.state"] = np.concatenate(
+            [frame["observation.state.joint_position"], frame["observation.state.gripper_position"]]
+        )
+        frame["action"] = np.concatenate([frame["action.joint_position"], frame["action.gripper_position"]])
+
+        # Meta data that are the same for all frames in the episode
+        frame.update(frame_meta)
+
+        # Cast fp64 to fp32
+        for key in frame:
+            if isinstance(frame[key], np.ndarray) and frame[key].dtype == np.float64:
+                frame[key] = frame[key].astype(np.float32)
+
+        yield frame
+
+
+def port_droid(
+    raw_dir: Path,
+    repo_id: str,
+    push_to_hub: bool = False,
+    num_shards: int | None = None,
+    shard_index: int | None = None,
+):
+    dataset_name = raw_dir.parent.name
+    version = raw_dir.name
+    data_dir = raw_dir.parent.parent
+
+    builder = tfds.builder(f"{dataset_name}/{version}", data_dir=data_dir, version="")
+
+    if num_shards is not None:
+        tfds_num_shards = builder.info.splits["train"].num_shards
+        if tfds_num_shards != DROID_SHARDS:
+            raise ValueError(
+                f"Number of shards of Droid dataset is expected to be {DROID_SHARDS} but is {tfds_num_shards}."
+            )
+        if num_shards != tfds_num_shards:
+            raise ValueError(
+                f"We only shard over the fixed number of shards provided by tensorflow dataset ({tfds_num_shards}), but {num_shards} shards provided instead."
+            )
+        if shard_index >= tfds_num_shards:
+            raise ValueError(
+                f"Shard index is greater than the num of shards ({shard_index} >= {num_shards})."
+            )
+
+        raw_dataset = builder.as_dataset(split=f"train[{shard_index}shard]")
+    else:
+        raw_dataset = builder.as_dataset(split="train")
+
+    lerobot_dataset = LeRobotDataset.create(
+        repo_id=repo_id,
+        robot_type=DROID_ROBOT_TYPE,
+        fps=DROID_FPS,
+        features=DROID_FEATURES,
+    )
+
+    start_time = time.time()
+    num_episodes = raw_dataset.cardinality().numpy().item()
+    logging.info(f"Number of episodes {num_episodes}")
+
+    for episode_index, episode in enumerate(raw_dataset):
+        elapsed_time = time.time() - start_time
+        d, h, m, s = get_elapsed_time_in_days_hours_minutes_seconds(elapsed_time)
+
+        logging.info(
+            f"{episode_index} / {num_episodes} episodes processed (after {d} days, {h} hours, {m} minutes, {s:.3f} seconds)"
+        )
+
+        for frame in generate_lerobot_frames(episode):
+            lerobot_dataset.add_frame(frame)
+
+        lerobot_dataset.save_episode()
+        logging.info("Save_episode")
+
+    if push_to_hub:
+        lerobot_dataset.push_to_hub(
+            # Add openx tag, since it belongs to the openx collection of datasets
+            tags=["openx"],
+            private=False,
+        )
+
+
+def validate_dataset(repo_id):
+    """Sanity check that ensure meta data can be loaded and all files are present."""
+    meta = LeRobotDatasetMetadata(repo_id)
+
+    if meta.total_episodes == 0:
+        raise ValueError("Number of episodes is 0.")
+
+    for ep_idx in range(meta.total_episodes):
+        data_path = meta.root / meta.get_data_file_path(ep_idx)
+
+        if not data_path.exists():
+            raise ValueError(f"Parquet file is missing in: {data_path}")
+
+        for vid_key in meta.video_keys:
+            vid_path = meta.root / meta.get_video_file_path(ep_idx, vid_key)
+            if not vid_path.exists():
+                raise ValueError(f"Video file is missing in: {vid_path}")
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--raw-dir",
+        type=Path,
+        required=True,
+        help="Directory containing input raw datasets (e.g. `path/to/dataset` or `path/to/dataset/version).",
+    )
+    parser.add_argument(
+        "--repo-id",
+        type=str,
+        help="Repositery identifier on Hugging Face: a community or a user name `/` the name of the dataset, required when push-to-hub is True",
+    )
+    parser.add_argument(
+        "--push-to-hub",
+        action="store_true",
+        help="Upload to hub.",
+    )
+    parser.add_argument(
+        "--num-shards",
+        type=int,
+        default=None,
+        help="Number of shards. Can be either None to load the full dataset, or 2048 to load one of the 2048 tensorflow dataset files.",
+    )
+    parser.add_argument(
+        "--shard-index",
+        type=int,
+        default=None,
+        help="Index of the shard. Can be either None to load the full dataset, or in [0,2047] to load one of the 2048 tensorflow dataset files.",
+    )
+
+    args = parser.parse_args()
+
+    port_droid(**vars(args))
+
+
+if __name__ == "__main__":
+    main()

examples/port_datasets/port_rlds.py

@@ -0,0 +1,359 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import logging
+import re
+import time
+from functools import partial
+from pathlib import Path
+from typing import Any
+
+import numpy as np
+import tensorflow as tf
+import tensorflow_datasets as tfds
+from oxe_utils.configs import OXE_DATASET_CONFIGS, ActionEncoding, StateEncoding
+from oxe_utils.transforms import OXE_STANDARDIZATION_TRANSFORMS
+
+from lerobot.datasets.lerobot_dataset import LeRobotDataset, LeRobotDatasetMetadata
+from lerobot.utils.utils import get_elapsed_time_in_days_hours_minutes_seconds
+
+# Default FPS for datasets without specific config
+DEFAULT_FPS = 10
+DEFAULT_ROBOT_TYPE = "unknown"
+
+
+def determine_dataset_info(raw_dir: Path):
+    """Determine dataset name and version from directory structure."""
+    last_part = raw_dir.name
+    if re.match(r"^\d+\.\d+\.\d+$", last_part):
+        version = last_part
+        dataset_name = raw_dir.parent.name
+        data_dir = raw_dir.parent.parent
+    else:
+        version = ""
+        dataset_name = last_part
+        data_dir = raw_dir.parent
+    return dataset_name, version, data_dir
+
+
+def generate_features_from_builder(builder, dataset_name: str) -> dict[str, Any]:
+    """Generate LeRobot features schema from TFDS builder and dataset config."""
+
+    # Generate state names based on encoding type
+    state_names = [f"motor_{i}" for i in range(8)]
+    if dataset_name in OXE_DATASET_CONFIGS:
+        state_encoding = OXE_DATASET_CONFIGS[dataset_name]["state_encoding"]
+        if state_encoding == StateEncoding.POS_EULER:
+            state_names = ["x", "y", "z", "roll", "pitch", "yaw", "pad", "gripper"]
+            if "libero" in dataset_name:
+                state_names = [
+                    "x",
+                    "y",
+                    "z",
+                    "roll",
+                    "pitch",
+                    "yaw",
+                    "gripper",
+                    "gripper",
+                ]  # 2D gripper state
+        elif state_encoding == StateEncoding.POS_QUAT:
+            state_names = ["x", "y", "z", "rx", "ry", "rz", "rw", "gripper"]
+        elif state_encoding == StateEncoding.JOINT:
+            state_names = [f"motor_{i}" for i in range(7)] + ["gripper"]
+            state_obs_keys = OXE_DATASET_CONFIGS[dataset_name]["state_obs_keys"]
+            pad_count = state_obs_keys[:-1].count(None)
+            state_names[-pad_count - 1 : -1] = ["pad"] * pad_count
+            state_names[-1] = "pad" if state_obs_keys[-1] is None else state_names[-1]
+
+    # Generate action names based on encoding type
+    action_names = [f"motor_{i}" for i in range(8)]
+    if dataset_name in OXE_DATASET_CONFIGS:
+        action_encoding = OXE_DATASET_CONFIGS[dataset_name]["action_encoding"]
+        if action_encoding == ActionEncoding.EEF_POS:
+            action_names = ["x", "y", "z", "roll", "pitch", "yaw", "gripper"]
+        elif action_encoding == ActionEncoding.JOINT_POS:
+            action_names = [f"motor_{i}" for i in range(7)] + ["gripper"]
+
+    # Base features (state and action)
+    features = {
+        "observation.state": {
+            "dtype": "float32",
+            "shape": (len(state_names),),
+            "names": {"axes": state_names},
+        },
+        "action": {
+            "dtype": "float32",
+            "shape": (len(action_names),),
+            "names": {"axes": action_names},
+        },
+    }
+
+    # Add image features from TFDS builder info
+    obs_features = builder.info.features["steps"]["observation"]
+    for key, value in obs_features.items():
+        # Skip depth images and non-image features
+        if "depth" in key or not any(x in key for x in ["image", "rgb"]):
+            continue
+
+        features[f"observation.images.{key}"] = {
+            "dtype": "video",
+            "shape": tuple(value.shape),
+            "names": ["height", "width", "channels"],
+        }
+
+    return features
+
+
+def transform_raw_dataset(episode, dataset_name: str):
+    """Apply OXE standardization transforms to raw TFDS episode."""
+    # Batch all steps in the episode
+    traj = next(iter(episode["steps"].batch(episode["steps"].cardinality())))
+
+    # Apply dataset-specific transform if available
+    if dataset_name in OXE_STANDARDIZATION_TRANSFORMS:
+        traj = OXE_STANDARDIZATION_TRANSFORMS[dataset_name](traj)
+
+    # Create consolidated state vector
+    if dataset_name in OXE_DATASET_CONFIGS:
+        state_obs_keys = OXE_DATASET_CONFIGS[dataset_name]["state_obs_keys"]
+    else:
+        state_obs_keys = [None for _ in range(8)]
+
+    # Build proprio (proprioceptive state) vector
+    proprio_components = []
+    for key in state_obs_keys:
+        if key is None:
+            # Add padding for missing state components
+            component = tf.zeros((tf.shape(traj["action"])[0], 1), dtype=tf.float32)
+        else:
+            component = tf.cast(traj["observation"][key], tf.float32)
+            # Ensure component has right shape (add dimension if needed)
+            if len(component.shape) == 1:
+                component = component[:, None]
+        proprio_components.append(component)
+
+    proprio = tf.concat(proprio_components, axis=1)
+
+    # Update trajectory with standardized format
+    traj.update(
+        {
+            "proprio": proprio,
+            "task": traj.get("language_instruction", ""),
+            "action": tf.cast(traj["action"], tf.float32),
+        }
+    )
+
+    episode["steps"] = traj
+    return episode
+
+
+def generate_lerobot_frames(tf_episode):
+    """Generate LeRobot frames from transformed TFDS episode."""
+    traj = tf_episode["steps"]
+
+    # Get the task/language instruction
+    if isinstance(traj["task"], tf.Tensor):
+        if traj["task"].dtype == tf.string:
+            task = traj["task"][0].numpy().decode() if len(traj["task"]) > 0 else ""
+        else:
+            task = str(traj["task"][0].numpy()) if len(traj["task"]) > 0 else ""
+    else:
+        task = str(traj["task"]) if traj["task"] else ""
+
+    # Iterate through each timestep
+    num_steps = tf.shape(traj["action"])[0].numpy()
+    for i in range(num_steps):
+        frame = {}
+
+        # Add observation state
+        frame["observation.state"] = traj["proprio"][i].numpy()
+
+        # Add action
+        frame["action"] = traj["action"][i].numpy()
+
+        # Add images
+        for key, value in traj["observation"].items():
+            if any(x in key for x in ["image", "rgb"]) and "depth" not in key:
+                frame[f"observation.images.{key}"] = value[i].numpy()
+
+        # Add task
+        frame["task"] = task
+
+        # Cast fp64 to fp32
+        for key in frame:
+            if isinstance(frame[key], np.ndarray) and frame[key].dtype == np.float64:
+                frame[key] = frame[key].astype(np.float32)
+
+        yield frame
+
+
+def port_rlds(
+    raw_dir: Path,
+    repo_id: str,
+    push_to_hub: bool = False,
+    num_shards: int | None = None,
+    shard_index: int | None = None,
+):
+    """Port RLDS dataset to LeRobot format."""
+
+    # Determine dataset info
+    dataset_name, version, data_dir = determine_dataset_info(raw_dir)
+
+    # Build TFDS dataset
+    builder = tfds.builder(
+        f"{dataset_name}/{version}" if version else dataset_name, data_dir=data_dir, version=version
+    )
+
+    # Handle sharding if specified
+    if num_shards is not None and shard_index is not None:
+        if shard_index >= num_shards:
+            raise ValueError(f"Shard index {shard_index} >= num_shards {num_shards}")
+
+        # Calculate shard splits
+        total_episodes = builder.info.splits["train"].num_examples
+        episodes_per_shard = total_episodes // num_shards
+        start_idx = shard_index * episodes_per_shard
+        if shard_index == num_shards - 1:
+            # Last shard gets remaining episodes
+            end_idx = total_episodes
+        else:
+            end_idx = start_idx + episodes_per_shard
+
+        split_str = f"train[{start_idx}:{end_idx}]"
+        raw_dataset = builder.as_dataset(split=split_str)
+    else:
+        raw_dataset = builder.as_dataset(split="train")
+
+    # Apply filtering (e.g., success filter for kuka)
+    if dataset_name == "kuka":
+        raw_dataset = raw_dataset.filter(lambda e: e["success"])
+
+    # Apply transformations
+    raw_dataset = raw_dataset.map(partial(transform_raw_dataset, dataset_name=dataset_name))
+
+    # Get dataset configuration
+    fps = DEFAULT_FPS
+    robot_type = DEFAULT_ROBOT_TYPE
+
+    if dataset_name in OXE_DATASET_CONFIGS:
+        config = OXE_DATASET_CONFIGS[dataset_name]
+        fps = config.get("control_frequency", DEFAULT_FPS)
+        robot_type = config.get("robot_type", DEFAULT_ROBOT_TYPE)
+        robot_type = robot_type.lower().replace(" ", "_").replace("-", "_")
+
+    # Generate features schema
+    features = generate_features_from_builder(builder, dataset_name)
+
+    # Create LeRobot dataset
+    lerobot_dataset = LeRobotDataset.create(
+        repo_id=repo_id,
+        robot_type=robot_type,
+        fps=int(fps),
+        features=features,
+    )
+
+    # Process episodes
+    start_time = time.time()
+    num_episodes = raw_dataset.cardinality().numpy().item()
+    logging.info(f"Number of episodes: {num_episodes}")
+
+    for episode_index, episode in enumerate(raw_dataset):
+        elapsed_time = time.time() - start_time
+        d, h, m, s = get_elapsed_time_in_days_hours_minutes_seconds(elapsed_time)
+
+        logging.info(
+            f"{episode_index} / {num_episodes} episodes processed "
+            f"(after {d} days, {h} hours, {m} minutes, {s:.3f} seconds)"
+        )
+
+        # Generate and add frames
+        for frame in generate_lerobot_frames(episode):
+            lerobot_dataset.add_frame(frame)
+
+        lerobot_dataset.save_episode()
+        logging.info("Save_episode")
+
+    # Push to hub if requested
+    if push_to_hub:
+        tags = ["openx", dataset_name]
+        if robot_type != "unknown":
+            tags.append(robot_type)
+
+        lerobot_dataset.push_to_hub(
+            tags=tags,
+            private=False,
+        )
+
+
+def validate_dataset(repo_id):
+    """Sanity check that ensures metadata can be loaded and all files are present."""
+    meta = LeRobotDatasetMetadata(repo_id)
+
+    if meta.total_episodes == 0:
+        raise ValueError("Number of episodes is 0.")
+
+    for ep_idx in range(meta.total_episodes):
+        data_path = meta.root / meta.get_data_file_path(ep_idx)
+
+        if not data_path.exists():
+            raise ValueError(f"Parquet file is missing in: {data_path}")
+
+        for vid_key in meta.video_keys:
+            vid_path = meta.root / meta.get_video_file_path(ep_idx, vid_key)
+            if not vid_path.exists():
+                raise ValueError(f"Video file is missing in: {vid_path}")
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--raw-dir",
+        type=Path,
+        required=True,
+        help="Directory containing input raw datasets (e.g. `path/to/dataset` or `path/to/dataset/version).",
+    )
+    parser.add_argument(
+        "--repo-id",
+        type=str,
+        help="Repository identifier on Hugging Face: a community or a user name `/` the name of the dataset, required when push-to-hub is True",
+    )
+    parser.add_argument(
+        "--push-to-hub",
+        action="store_true",
+        help="Upload to hub.",
+    )
+    parser.add_argument(
+        "--num-shards",
+        type=int,
+        default=None,
+        help="Number of shards to split the dataset into for parallel processing.",
+    )
+    parser.add_argument(
+        "--shard-index",
+        type=int,
+        default=None,
+        help="Index of the shard to process (0-indexed).",
+    )
+
+    args = parser.parse_args()
+
+    port_rlds(**vars(args))
+
+
+if __name__ == "__main__":
+    main()

examples/port_datasets/slurm_aggregate_shards.py

@@ -0,0 +1,148 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import logging
+from pathlib import Path
+
+from datatrove.executor import LocalPipelineExecutor
+from datatrove.executor.slurm import SlurmPipelineExecutor
+from datatrove.pipeline.base import PipelineStep
+from port_datasets.droid_rlds.port_droid import DROID_SHARDS
+
+from lerobot.datasets.aggregate import aggregate_datasets
+from lerobot.utils.utils import init_logging
+
+
+class AggregateDatasets(PipelineStep):
+    def __init__(
+        self,
+        repo_ids: list[str],
+        aggregated_repo_id: str,
+    ):
+        super().__init__()
+        self.repo_ids = repo_ids
+        self.aggr_repo_id = aggregated_repo_id
+
+    def run(self, data=None, rank: int = 0, world_size: int = 1):
+        init_logging()
+
+        # Since aggregate_datasets already handles parallel processing internally,
+        # we only need one worker to run the entire aggregation
+        if rank == 0:
+            logging.info(f"Starting aggregation of {len(self.repo_ids)} datasets into {self.aggr_repo_id}")
+            aggregate_datasets(self.repo_ids, self.aggr_repo_id)
+            logging.info("Aggregation complete!")
+        else:
+            logging.info(f"Worker {rank} skipping - only worker 0 performs aggregation")
+
+
+def make_aggregate_executor(
+    repo_ids, repo_id, job_name, logs_dir, workers, partition, cpus_per_task, mem_per_cpu, slurm=True
+):
+    kwargs = {
+        "pipeline": [
+            AggregateDatasets(repo_ids, repo_id),
+        ],
+        "logging_dir": str(logs_dir / job_name),
+    }
+
+    if slurm:
+        # For aggregation, we only need 1 task since aggregate_datasets handles everything
+        kwargs.update(
+            {
+                "job_name": job_name,
+                "tasks": 1,  # Only need 1 task for aggregation
+                "workers": 1,  # Only need 1 worker
+                "time": "08:00:00",
+                "partition": partition,
+                "cpus_per_task": cpus_per_task,
+                "sbatch_args": {"mem-per-cpu": mem_per_cpu},
+            }
+        )
+        executor = SlurmPipelineExecutor(**kwargs)
+    else:
+        kwargs.update(
+            {
+                "tasks": 1,
+                "workers": 1,
+            }
+        )
+        executor = LocalPipelineExecutor(**kwargs)
+
+    return executor
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--repo-id",
+        type=str,
+        help="Repository identifier on Hugging Face: a community or a user name `/` the name of the dataset, required when push-to-hub is True.",
+    )
+    parser.add_argument(
+        "--logs-dir",
+        type=Path,
+        help="Path to logs directory for `datatrove`.",
+    )
+    parser.add_argument(
+        "--job-name",
+        type=str,
+        default="aggr_droid",
+        help="Job name used in slurm, and name of the directory created inside the provided logs directory.",
+    )
+    parser.add_argument(
+        "--slurm",
+        type=int,
+        default=1,
+        help="Launch over slurm. Use `--slurm 0` to launch sequentially (useful to debug).",
+    )
+    parser.add_argument(
+        "--workers",
+        type=int,
+        default=1,  # Changed default to 1 since aggregation doesn't need multiple workers
+        help="Number of slurm workers. For aggregation, this should be 1.",
+    )
+    parser.add_argument(
+        "--partition",
+        type=str,
+        help="Slurm partition. Ideally a CPU partition. No need for GPU partition.",
+    )
+    parser.add_argument(
+        "--cpus-per-task",
+        type=int,
+        default=8,
+        help="Number of cpus that each slurm worker will use.",
+    )
+    parser.add_argument(
+        "--mem-per-cpu",
+        type=str,
+        default="1950M",
+        help="Memory per cpu that each worker will use.",
+    )
+
+    args = parser.parse_args()
+    kwargs = vars(args)
+    kwargs["slurm"] = kwargs.pop("slurm") == 1
+
+    repo_ids = [f"{args.repo_id}_world_{DROID_SHARDS}_rank_{rank}" for rank in range(DROID_SHARDS)]
+    aggregate_executor = make_aggregate_executor(repo_ids, **kwargs)
+    aggregate_executor.run()
+
+
+if __name__ == "__main__":
+    main()

examples/port_datasets/slurm_port_shards.py

@@ -0,0 +1,247 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+from pathlib import Path
+
+from datatrove.executor import LocalPipelineExecutor
+from datatrove.executor.slurm import SlurmPipelineExecutor
+from datatrove.pipeline.base import PipelineStep
+from port_droid import DROID_SHARDS
+
+
+class PortDroidShards(PipelineStep):
+    def __init__(
+        self,
+        raw_dir: Path | str,
+        repo_id: str = None,
+    ):
+        super().__init__()
+        self.raw_dir = Path(raw_dir)
+        self.repo_id = repo_id
+
+    def run(self, data=None, rank: int = 0, world_size: int = 1):
+        from datasets.utils.tqdm import disable_progress_bars
+        from port_droid import port_droid, validate_dataset
+
+        from lerobot.utils.utils import init_logging
+
+        init_logging()
+        disable_progress_bars()
+
+        shard_repo_id = f"{self.repo_id}_world_{world_size}_rank_{rank}"
+
+        try:
+            validate_dataset(shard_repo_id)
+            return
+        except Exception:
+            pass  # nosec B110 - Dataset doesn't exist yet, continue with porting
+
+        port_droid(
+            self.raw_dir,
+            shard_repo_id,
+            push_to_hub=False,
+            num_shards=world_size,
+            shard_index=rank,
+        )
+
+        validate_dataset(shard_repo_id)
+
+
+class PortRLDSShards(PipelineStep):
+    def __init__(
+        self,
+        raw_dir: Path | str,
+        repo_id: str = None,
+        num_shards: int = None,
+    ):
+        super().__init__()
+        self.raw_dir = Path(raw_dir)
+        self.repo_id = repo_id
+        self.num_shards = num_shards
+
+    def run(self, data=None, rank: int = 0, world_size: int = 1):
+        from datasets.utils.tqdm import disable_progress_bars
+        from port_rlds import port_rlds, validate_dataset
+
+        from lerobot.utils.utils import init_logging
+
+        init_logging()
+        disable_progress_bars()
+
+        shard_repo_id = f"{self.repo_id}_world_{world_size}_rank_{rank}"
+
+        try:
+            validate_dataset(shard_repo_id)
+            return
+        except Exception:
+            pass  # nosec B110 - Dataset doesn't exist yet, continue with porting
+
+        port_rlds(
+            self.raw_dir,
+            shard_repo_id,
+            push_to_hub=False,
+            num_shards=world_size,
+            shard_index=rank,
+        )
+
+        validate_dataset(shard_repo_id)
+
+
+def make_port_executor(
+    raw_dir,
+    repo_id,
+    job_name,
+    logs_dir,
+    workers,
+    partition,
+    cpus_per_task,
+    mem_per_cpu,
+    slurm=True,
+    dataset_type="droid",
+    num_shards=None,
+):
+    # Select appropriate pipeline step based on dataset type
+    if dataset_type.lower() == "droid":
+        pipeline_step = PortDroidShards(raw_dir, repo_id)
+        default_shards = DROID_SHARDS
+    elif dataset_type.lower() == "rlds":
+        pipeline_step = PortRLDSShards(raw_dir, repo_id, num_shards)
+        default_shards = num_shards or workers  # Use num_shards or fallback to workers
+    else:
+        raise ValueError(f"Unsupported dataset type: {dataset_type}")
+
+    kwargs = {
+        "pipeline": [pipeline_step],
+        "logging_dir": str(logs_dir / job_name),
+    }
+
+    if slurm:
+        kwargs.update(
+            {
+                "job_name": job_name,
+                "tasks": default_shards,
+                "workers": workers,
+                "time": "08:00:00",
+                "partition": partition,
+                "cpus_per_task": cpus_per_task,
+                "sbatch_args": {"mem-per-cpu": mem_per_cpu},
+            }
+        )
+        executor = SlurmPipelineExecutor(**kwargs)
+    else:
+        kwargs.update(
+            {
+                "tasks": 1,
+                "workers": 1,
+            }
+        )
+        executor = LocalPipelineExecutor(**kwargs)
+
+    return executor
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--raw-dir",
+        type=Path,
+        required=True,
+        help="Directory containing input raw datasets (e.g. `path/to/dataset` or `path/to/dataset/version).",
+    )
+    parser.add_argument(
+        "--repo-id",
+        type=str,
+        help="Repositery identifier on Hugging Face: a community or a user name `/` the name of the dataset, required when push-to-hub is True.",
+    )
+    parser.add_argument(
+        "--logs-dir",
+        type=Path,
+        default=Path("./logs"),
+        help="Path to logs directory for `datatrove` (default: ./logs).",
+    )
+    parser.add_argument(
+        "--dataset-type",
+        type=str,
+        choices=["droid", "rlds"],
+        default="droid",
+        help="Type of dataset to process: 'droid' for DROID datasets or 'rlds' for RLDS/OpenX datasets.",
+    )
+    parser.add_argument(
+        "--job-name",
+        type=str,
+        default=None,
+        help="Job name used in slurm, and name of the directory created inside the provided logs directory. Defaults to 'port_{dataset_type}'.",
+    )
+    parser.add_argument(
+        "--slurm",
+        type=int,
+        default=1,
+        help="Launch over slurm. Use `--slurm 0` to launch sequentially (useful to debug).",
+    )
+    parser.add_argument(
+        "--workers",
+        type=int,
+        default=None,
+        help="Number of slurm workers. Defaults: 2048 for DROID, 64 for RLDS datasets.",
+    )
+    parser.add_argument(
+        "--num-shards",
+        type=int,
+        default=None,
+        help="Number of shards to split the dataset into. For DROID datasets, this is fixed at 2048. For RLDS datasets, defaults to number of workers.",
+    )
+    parser.add_argument(
+        "--partition",
+        type=str,
+        help="Slurm partition. Ideally a CPU partition. No need for GPU partition.",
+    )
+    parser.add_argument(
+        "--cpus-per-task",
+        type=int,
+        default=8,
+        help="Number of cpus that each slurm worker will use.",
+    )
+    parser.add_argument(
+        "--mem-per-cpu",
+        type=str,
+        default="1950M",
+        help="Memory per cpu that each worker will use.",
+    )
+
+    args = parser.parse_args()
+
+    # Set defaults based on dataset type
+    if args.job_name is None:
+        args.job_name = f"port_{args.dataset_type}"
+
+    if args.workers is None:
+        if args.dataset_type == "droid":
+            args.workers = 2048
+        else:  # rlds
+            args.workers = 64
+
+    # Convert args to kwargs and process
+    kwargs = vars(args)
+    kwargs["slurm"] = kwargs.pop("slurm") == 1
+
+    port_executor = make_port_executor(**kwargs)
+    port_executor.run()
+
+
+if __name__ == "__main__":
+    main()

examples/port_datasets/slurm_upload.py

@@ -0,0 +1,281 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import logging
+import os
+from pathlib import Path
+
+from datatrove.executor import LocalPipelineExecutor
+from datatrove.executor.slurm import SlurmPipelineExecutor
+from datatrove.pipeline.base import PipelineStep
+from huggingface_hub import HfApi
+from huggingface_hub.constants import REPOCARD_NAME
+from port_datasets.droid_rlds.port_droid import DROID_SHARDS
+
+from lerobot.datasets.lerobot_dataset import CODEBASE_VERSION, LeRobotDatasetMetadata
+from lerobot.datasets.utils import create_lerobot_dataset_card
+from lerobot.utils.utils import init_logging
+
+
+class UploadDataset(PipelineStep):
+    def __init__(
+        self,
+        repo_id: str,
+        branch: str | None = None,
+        revision: str | None = None,
+        tags: list | None = None,
+        license: str | None = "apache-2.0",
+        private: bool = False,
+        distant_repo_id: str | None = None,
+        **card_kwargs,
+    ):
+        super().__init__()
+        self.repo_id = repo_id
+        self.distant_repo_id = self.repo_id if distant_repo_id is None else distant_repo_id
+        self.branch = branch
+        self.tags = tags
+        self.license = license
+        self.private = private
+        self.card_kwargs = card_kwargs
+        self.revision = revision if revision else CODEBASE_VERSION
+
+        if os.environ.get("HF_HUB_ENABLE_HF_TRANSFER", "0") != "1":
+            logging.warning(
+                'HF_HUB_ENABLE_HF_TRANSFER is not set to "1". Install hf_transfer and set the env '
+                "variable for faster uploads:\npip install hf-transfer\nexport HF_HUB_ENABLE_HF_TRANSFER=1"
+            )
+
+        self.create_repo()
+
+    def create_repo(self):
+        logging.info(f"Loading meta data from {self.repo_id}...")
+        meta = LeRobotDatasetMetadata(self.repo_id)
+
+        logging.info(f"Creating repo {self.distant_repo_id}...")
+        hub_api = HfApi()
+        hub_api.create_repo(
+            repo_id=self.distant_repo_id,
+            private=self.private,
+            repo_type="dataset",
+            exist_ok=True,
+        )
+        if self.branch:
+            hub_api.create_branch(
+                repo_id=self.distant_repo_id,
+                branch=self.branch,
+                revision=self.revision,
+                repo_type="dataset",
+                exist_ok=True,
+            )
+
+        if not hub_api.file_exists(
+            self.distant_repo_id, REPOCARD_NAME, repo_type="dataset", revision=self.branch
+        ):
+            card = create_lerobot_dataset_card(
+                tags=self.tags, dataset_info=meta.info, license=self.license, **self.card_kwargs
+            )
+            card.push_to_hub(repo_id=self.distant_repo_id, repo_type="dataset", revision=self.branch)
+
+            hub_api.create_tag(self.distant_repo_id, tag=CODEBASE_VERSION, repo_type="dataset")
+
+        def list_files_recursively(directory):
+            base_path = Path(directory)
+            return [str(file.relative_to(base_path)) for file in base_path.rglob("*") if file.is_file()]
+
+        logging.info(f"Listing all local files from {self.repo_id}...")
+        self.file_paths = list_files_recursively(meta.root)
+        self.file_paths = sorted(self.file_paths)
+
+    def create_chunks(self, lst, n):
+        from itertools import islice
+
+        it = iter(lst)
+        return [list(islice(it, size)) for size in [len(lst) // n + (i < len(lst) % n) for i in range(n)]]
+
+    def create_commits(self, additions):
+        import logging
+        import math
+        import random
+        import time
+
+        from huggingface_hub import create_commit
+        from huggingface_hub.utils import HfHubHTTPError
+
+        FILES_BETWEEN_COMMITS = 10  # noqa: N806
+        BASE_DELAY = 0.1  # noqa: N806
+        MAX_RETRIES = 12  # noqa: N806
+
+        # Split the files into smaller chunks for faster commit
+        # and avoiding "A commit has happened since" error
+        num_chunks = math.ceil(len(additions) / FILES_BETWEEN_COMMITS)
+        chunks = self.create_chunks(additions, num_chunks)
+
+        for chunk in chunks:
+            retries = 0
+            while True:
+                try:
+                    create_commit(
+                        self.distant_repo_id,
+                        repo_type="dataset",
+                        operations=chunk,
+                        commit_message=f"DataTrove upload ({len(chunk)} files)",
+                        revision=self.branch,
+                    )
+                    # TODO: every 100 chunks super_squach_commits()
+                    logging.info("create_commit completed!")
+                    break
+                except HfHubHTTPError as e:
+                    if "A commit has happened since" in e.server_message:
+                        if retries >= MAX_RETRIES:
+                            logging.error(f"Failed to create commit after {MAX_RETRIES=}. Giving up.")
+                            raise e
+                        logging.info("Commit creation race condition issue. Waiting...")
+                        time.sleep(BASE_DELAY * 2**retries + random.uniform(0, 2))
+                        retries += 1
+                    else:
+                        raise e
+
+    def run(self, data=None, rank: int = 0, world_size: int = 1):
+        import logging
+
+        from datasets.utils.tqdm import disable_progress_bars
+        from huggingface_hub import CommitOperationAdd, preupload_lfs_files
+
+        from lerobot.datasets.lerobot_dataset import LeRobotDatasetMetadata
+        from lerobot.utils.utils import init_logging
+
+        init_logging()
+        disable_progress_bars()
+
+        chunks = self.create_chunks(self.file_paths, world_size)
+        file_paths = chunks[rank]
+
+        if len(file_paths) == 0:
+            raise ValueError(file_paths)
+
+        logging.info("Pre-uploading LFS files...")
+        for i, path in enumerate(file_paths):
+            logging.info(f"{i}: {path}")
+
+        meta = LeRobotDatasetMetadata(self.repo_id)
+        additions = [
+            CommitOperationAdd(path_in_repo=path, path_or_fileobj=meta.root / path) for path in file_paths
+        ]
+        preupload_lfs_files(
+            repo_id=self.distant_repo_id, repo_type="dataset", additions=additions, revision=self.branch
+        )
+
+        logging.info("Creating commits...")
+        self.create_commits(additions)
+        logging.info("Done!")
+
+
+def make_upload_executor(
+    repo_id, job_name, logs_dir, workers, partition, cpus_per_task, mem_per_cpu, slurm=True
+):
+    kwargs = {
+        "pipeline": [
+            UploadDataset(repo_id),
+        ],
+        "logging_dir": str(logs_dir / job_name),
+    }
+
+    if slurm:
+        kwargs.update(
+            {
+                "job_name": job_name,
+                "tasks": DROID_SHARDS,
+                "workers": workers,
+                "time": "08:00:00",
+                "partition": partition,
+                "cpus_per_task": cpus_per_task,
+                "sbatch_args": {"mem-per-cpu": mem_per_cpu},
+            }
+        )
+        executor = SlurmPipelineExecutor(**kwargs)
+    else:
+        kwargs.update(
+            {
+                "tasks": DROID_SHARDS,
+                "workers": 1,
+            }
+        )
+        executor = LocalPipelineExecutor(**kwargs)
+
+    return executor
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--repo-id",
+        type=str,
+        help="Repositery identifier on Hugging Face: a community or a user name `/` the name of the dataset, required when push-to-hub is True.",
+    )
+    parser.add_argument(
+        "--logs-dir",
+        type=Path,
+        help="Path to logs directory for `datatrove`.",
+    )
+    parser.add_argument(
+        "--job-name",
+        type=str,
+        default="upload_droid",
+        help="Job name used in slurm, and name of the directory created inside the provided logs directory.",
+    )
+    parser.add_argument(
+        "--slurm",
+        type=int,
+        default=1,
+        help="Launch over slurm. Use `--slurm 0` to launch sequentially (useful to debug).",
+    )
+    parser.add_argument(
+        "--workers",
+        type=int,
+        default=50,
+        help="Number of slurm workers. It should be less than the maximum number of shards.",
+    )
+    parser.add_argument(
+        "--partition",
+        type=str,
+        help="Slurm partition. Ideally a CPU partition. No need for GPU partition.",
+    )
+    parser.add_argument(
+        "--cpus-per-task",
+        type=int,
+        default=8,
+        help="Number of cpus that each slurm worker will use.",
+    )
+    parser.add_argument(
+        "--mem-per-cpu",
+        type=str,
+        default="1950M",
+        help="Memory per cpu that each worker will use.",
+    )
+
+    init_logging()
+
+    args = parser.parse_args()
+    kwargs = vars(args)
+    kwargs["slurm"] = kwargs.pop("slurm") == 1
+    upload_executor = make_upload_executor(**kwargs)
+    upload_executor.run()
+
+
+if __name__ == "__main__":
+    main()

pyproject.toml

@@ -25,7 +25,7 @@ discord = "https://discord.gg/s3KuuzsPFb"
 
 [project]
 name = "lerobot"
-version = "0.2.0"
+version = "0.3.4"
 description = "🤗 LeRobot: State-of-the-art Machine Learning for Real-World Robotics in Pytorch"
 readme = "README.md"
 license = { text = "Apache-2.0" }
@@ -68,22 +68,22 @@ dependencies = [
     "einops>=0.8.0",
     "opencv-python-headless>=4.9.0",
     "av>=14.2.0",
-    "torch>=2.2.1",
-    "torchcodec>=0.2.1; sys_platform != 'win32' and (sys_platform != 'linux' or (platform_machine != 'aarch64' and platform_machine != 'arm64' and platform_machine != 'armv7l')) and (sys_platform != 'darwin' or platform_machine != 'x86_64')",
-    "torchvision>=0.21.0",
     "jsonlines>=4.0.0",
     "packaging>=24.2",
     "pynput>=1.7.7",
     "pyserial>=3.5",
     "wandb>=0.20.0",
 
+    "torch>=2.2.1,<2.8.0", # TODO: Bumb dependency
+    "torchcodec>=0.2.1,<0.6.0; sys_platform != 'win32' and (sys_platform != 'linux' or (platform_machine != 'aarch64' and platform_machine != 'arm64' and platform_machine != 'armv7l')) and (sys_platform != 'darwin' or platform_machine != 'x86_64')", # TODO: Bumb dependency
+    "torchvision>=0.21.0,<0.23.0", # TODO: Bumb dependency
+
     "draccus==0.10.0", # TODO: Remove ==
     "gymnasium>=0.29.1,<1.0.0", # TODO: Bumb dependency
     "rerun-sdk>=0.21.0,<0.23.0", # TODO: Bumb dependency
 
     # Support dependencies
     "deepdiff>=7.0.1,<9.0.0",
-    "flask>=3.0.3,<4.0.0",
     "imageio[ffmpeg]>=2.34.0,<3.0.0",
     "termcolor>=2.4.0,<4.0.0",
 ]
@@ -125,7 +125,6 @@ hilserl = ["lerobot[transformers-dep]", "gym-hil>=0.1.9", "lerobot[grpcio-dep]",
 async = ["lerobot[grpcio-dep]", "matplotlib>=3.10.3"]
 
 # Development
-docs = ["hf-doc-builder @ git+https://github.com/huggingface/doc-builder.git@main", "watchdog >= 6.0.0"]
 dev = ["pre-commit>=3.7.0", "debugpy>=1.8.1", "lerobot[grpcio-dep]", "grpcio-tools==1.73.1"]
 test = ["pytest>=8.1.0", "pytest-timeout>=2.4.0", "pytest-cov>=5.0.0", "mock-serial>=0.0.1 ; sys_platform != 'win32'"]
 video_benchmark = ["scikit-image>=0.23.2", "pandas>=2.2.2"]
@@ -147,7 +146,6 @@ all = [
     "lerobot[smolvla]",
     "lerobot[hilserl]",
     "lerobot[async]",
-    "lerobot[docs]",
     "lerobot[dev]",
     "lerobot[test]",
     "lerobot[video_benchmark]",

requirements-macos.txt

@@ -0,0 +1,625 @@
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
+#
+#    pip-compile --output-file=requirements-macos.txt requirements.in
+#
+-e .[all]
+    # via -[all]
+absl-py==2.3.1
+    # via
+    #   dm-control
+    #   dm-env
+    #   dm-tree
+    #   labmaze
+    #   mujoco
+accelerate==1.9.0
+    # via lerobot
+aiohappyeyeballs==2.6.1
+    # via aiohttp
+aiohttp==3.12.15
+    # via fsspec
+aiosignal==1.4.0
+    # via aiohttp
+annotated-types==0.7.0
+    # via pydantic
+asttokens==3.0.0
+    # via stack-data
+async-timeout==5.0.1
+    # via aiohttp
+attrs==25.3.0
+    # via
+    #   aiohttp
+    #   dm-tree
+    #   jsonlines
+    #   rerun-sdk
+av==15.0.0
+    # via lerobot
+blinker==1.9.0
+    # via flask
+certifi==2025.7.14
+    # via
+    #   requests
+    #   sentry-sdk
+cffi==1.17.1
+    # via pymunk
+cfgv==3.4.0
+    # via pre-commit
+charset-normalizer==3.4.2
+    # via requests
+click==8.2.1
+    # via
+    #   flask
+    #   wandb
+cloudpickle==3.1.1
+    # via gymnasium
+cmake==4.0.3
+    # via lerobot
+cmeel==0.57.3
+    # via
+    #   cmeel-assimp
+    #   cmeel-boost
+    #   cmeel-console-bridge
+    #   cmeel-octomap
+    #   cmeel-qhull
+    #   cmeel-tinyxml2
+    #   cmeel-urdfdom
+    #   cmeel-zlib
+    #   coal-library
+    #   eigenpy
+    #   eiquadprog
+    #   pin
+    #   placo
+    #   rhoban-cmeel-jsoncpp
+cmeel-assimp==5.4.3.1
+    # via coal-library
+cmeel-boost==1.87.0.1
+    # via
+    #   coal-library
+    #   eigenpy
+    #   eiquadprog
+    #   pin
+cmeel-console-bridge==1.0.2.3
+    # via cmeel-urdfdom
+cmeel-octomap==1.10.0
+    # via coal-library
+cmeel-qhull==8.0.2.1
+    # via coal-library
+cmeel-tinyxml2==10.0.0
+    # via cmeel-urdfdom
+cmeel-urdfdom==4.0.1
+    # via pin
+cmeel-zlib==1.3.1
+    # via cmeel-assimp
+coal-library==3.0.1
+    # via pin
+contourpy==1.3.2
+    # via matplotlib
+coverage[toml]==7.10.1
+    # via pytest-cov
+cycler==0.12.1
+    # via matplotlib
+datasets==3.6.0
+    # via lerobot
+debugpy==1.8.15
+    # via lerobot
+decorator==5.2.1
+    # via ipython
+deepdiff==8.5.0
+    # via lerobot
+diffusers==0.34.0
+    # via lerobot
+dill==0.3.8
+    # via
+    #   datasets
+    #   multiprocess
+distlib==0.4.0
+    # via virtualenv
+dm-control==1.0.14
+    # via gym-aloha
+dm-env==1.6
+    # via dm-control
+dm-tree==0.1.9
+    # via
+    #   dm-control
+    #   dm-env
+docopt==0.6.2
+    # via num2words
+draccus==0.10.0
+    # via lerobot
+dynamixel-sdk==3.7.31
+    # via lerobot
+eigenpy==3.10.3
+    # via coal-library
+einops==0.8.1
+    # via lerobot
+eiquadprog==1.2.9
+    # via placo
+exceptiongroup==1.3.0
+    # via
+    #   ipython
+    #   pytest
+executing==2.2.0
+    # via stack-data
+farama-notifications==0.0.4
+    # via gymnasium
+feetech-servo-sdk==1.0.0
+    # via lerobot
+filelock==3.18.0
+    # via
+    #   datasets
+    #   diffusers
+    #   huggingface-hub
+    #   torch
+    #   transformers
+    #   virtualenv
+flask==3.1.1
+    # via lerobot
+fonttools==4.59.0
+    # via matplotlib
+frozenlist==1.7.0
+    # via
+    #   aiohttp
+    #   aiosignal
+fsspec[http]==2025.3.0
+    # via
+    #   datasets
+    #   huggingface-hub
+    #   torch
+gitdb==4.0.12
+    # via gitpython
+gitpython==3.1.45
+    # via wandb
+glfw==2.9.0
+    # via
+    #   dm-control
+    #   mujoco
+grpcio==1.73.1
+    # via
+    #   grpcio-tools
+    #   lerobot
+grpcio-tools==1.73.1
+    # via lerobot
+gym-aloha==0.1.1
+    # via lerobot
+gym-hil==0.1.10
+    # via lerobot
+gym-pusht==0.1.5
+    # via lerobot
+gym-xarm==0.1.1
+    # via lerobot
+gymnasium==0.29.1
+    # via
+    #   gym-aloha
+    #   gym-hil
+    #   gym-pusht
+    #   gym-xarm
+    #   gymnasium-robotics
+    #   lerobot
+    #   pettingzoo
+gymnasium-robotics==1.2.4
+    # via gym-xarm
+hf-transfer==0.1.9
+    # via huggingface-hub
+hf-xet==1.1.5
+    # via huggingface-hub
+hidapi==0.14.0.post4
+    # via
+    #   gym-hil
+    #   lerobot
+huggingface-hub[cli,hf-transfer]==0.34.3
+    # via
+    #   accelerate
+    #   datasets
+    #   diffusers
+    #   lerobot
+    #   tokenizers
+    #   transformers
+identify==2.6.12
+    # via pre-commit
+idna==3.10
+    # via
+    #   requests
+    #   yarl
+imageio[ffmpeg]==2.37.0
+    # via
+    #   gym-aloha
+    #   gym-hil
+    #   gymnasium-robotics
+    #   lerobot
+    #   scikit-image
+imageio-ffmpeg==0.6.0
+    # via imageio
+importlib-metadata==8.7.0
+    # via diffusers
+iniconfig==2.1.0
+    # via pytest
+inquirerpy==0.3.4
+    # via huggingface-hub
+ipython==8.37.0
+    # via meshcat
+ischedule==1.2.7
+    # via placo
+itsdangerous==2.2.0
+    # via flask
+jedi==0.19.2
+    # via ipython
+jinja2==3.1.6
+    # via
+    #   flask
+    #   gymnasium-robotics
+    #   torch
+jsonlines==4.0.0
+    # via lerobot
+kiwisolver==1.4.8
+    # via matplotlib
+labmaze==1.0.6
+    # via dm-control
+lazy-loader==0.4
+    # via scikit-image
+lxml==6.0.0
+    # via dm-control
+markupsafe==3.0.2
+    # via
+    #   flask
+    #   jinja2
+    #   werkzeug
+matplotlib==3.10.5
+    # via lerobot
+matplotlib-inline==0.1.7
+    # via ipython
+mergedeep==1.3.4
+    # via draccus
+meshcat==0.3.2
+    # via placo
+mock-serial==0.0.1
+    # via lerobot
+mpmath==1.3.0
+    # via sympy
+mujoco==2.3.7
+    # via
+    #   dm-control
+    #   gym-aloha
+    #   gym-hil
+    #   gym-xarm
+    #   gymnasium-robotics
+multidict==6.6.3
+    # via
+    #   aiohttp
+    #   yarl
+multiprocess==0.70.16
+    # via datasets
+mypy-extensions==1.1.0
+    # via typing-inspect
+networkx==3.4.2
+    # via
+    #   scikit-image
+    #   torch
+nodeenv==1.9.1
+    # via pre-commit
+num2words==0.5.14
+    # via lerobot
+numpy==2.2.6
+    # via
+    #   accelerate
+    #   cmeel-boost
+    #   contourpy
+    #   datasets
+    #   diffusers
+    #   dm-control
+    #   dm-env
+    #   dm-tree
+    #   gymnasium
+    #   gymnasium-robotics
+    #   imageio
+    #   labmaze
+    #   matplotlib
+    #   meshcat
+    #   mujoco
+    #   opencv-python
+    #   opencv-python-headless
+    #   pandas
+    #   pettingzoo
+    #   rerun-sdk
+    #   scikit-image
+    #   scipy
+    #   shapely
+    #   tifffile
+    #   torchvision
+    #   transformers
+opencv-python==4.12.0.88
+    # via gym-pusht
+opencv-python-headless==4.12.0.88
+    # via lerobot
+orderly-set==5.5.0
+    # via deepdiff
+packaging==25.0
+    # via
+    #   accelerate
+    #   datasets
+    #   huggingface-hub
+    #   lazy-loader
+    #   lerobot
+    #   matplotlib
+    #   pytest
+    #   scikit-image
+    #   transformers
+    #   wandb
+pandas==2.3.1
+    # via
+    #   datasets
+    #   lerobot
+parso==0.8.4
+    # via jedi
+pettingzoo==1.24.3
+    # via gymnasium-robotics
+pexpect==4.9.0
+    # via ipython
+pfzy==0.3.4
+    # via inquirerpy
+pillow==11.3.0
+    # via
+    #   diffusers
+    #   imageio
+    #   matplotlib
+    #   meshcat
+    #   rerun-sdk
+    #   scikit-image
+    #   torchvision
+pin==3.4.0
+    # via placo
+placo==0.9.14
+    # via lerobot
+platformdirs==4.3.8
+    # via
+    #   virtualenv
+    #   wandb
+pluggy==1.6.0
+    # via
+    #   pytest
+    #   pytest-cov
+pre-commit==4.2.0
+    # via lerobot
+prompt-toolkit==3.0.51
+    # via
+    #   inquirerpy
+    #   ipython
+propcache==0.3.2
+    # via
+    #   aiohttp
+    #   yarl
+protobuf==6.31.0
+    # via
+    #   dm-control
+    #   grpcio-tools
+    #   lerobot
+    #   wandb
+psutil==7.0.0
+    # via
+    #   accelerate
+    #   imageio
+ptyprocess==0.7.0
+    # via pexpect
+pure-eval==0.2.3
+    # via stack-data
+pyarrow==21.0.0
+    # via
+    #   datasets
+    #   rerun-sdk
+pycparser==2.22
+    # via cffi
+pydantic==2.11.7
+    # via wandb
+pydantic-core==2.33.2
+    # via pydantic
+pygame==2.6.1
+    # via
+    #   gym-hil
+    #   gym-pusht
+    #   lerobot
+pygments==2.19.2
+    # via
+    #   ipython
+    #   pytest
+pymunk==6.11.1
+    # via
+    #   gym-pusht
+    #   lerobot
+pyngrok==7.2.12
+    # via meshcat
+pynput==1.8.1
+    # via
+    #   gym-hil
+    #   lerobot
+pyobjc-core==11.1
+    # via
+    #   pyobjc-framework-applicationservices
+    #   pyobjc-framework-cocoa
+    #   pyobjc-framework-coretext
+    #   pyobjc-framework-quartz
+pyobjc-framework-applicationservices==11.1
+    # via pynput
+pyobjc-framework-cocoa==11.1
+    # via
+    #   pyobjc-framework-applicationservices
+    #   pyobjc-framework-coretext
+    #   pyobjc-framework-quartz
+pyobjc-framework-coretext==11.1
+    # via pyobjc-framework-applicationservices
+pyobjc-framework-quartz==11.1
+    # via
+    #   pynput
+    #   pyobjc-framework-applicationservices
+    #   pyobjc-framework-coretext
+pyopengl==3.1.9
+    # via
+    #   dm-control
+    #   mujoco
+pyparsing==3.2.3
+    # via
+    #   dm-control
+    #   matplotlib
+pyrealsense2-macosx==2.54.2
+    # via lerobot
+pyserial==3.5
+    # via
+    #   dynamixel-sdk
+    #   feetech-servo-sdk
+    #   lerobot
+pytest==8.4.1
+    # via
+    #   lerobot
+    #   pytest-cov
+    #   pytest-timeout
+pytest-cov==6.2.1
+    # via lerobot
+pytest-timeout==2.4.0
+    # via lerobot
+python-dateutil==2.9.0.post0
+    # via
+    #   matplotlib
+    #   pandas
+pytz==2025.2
+    # via pandas
+pyyaml==6.0.2
+    # via
+    #   accelerate
+    #   datasets
+    #   draccus
+    #   huggingface-hub
+    #   pre-commit
+    #   pyngrok
+    #   pyyaml-include
+    #   transformers
+    #   wandb
+pyyaml-include==1.4.1
+    # via draccus
+pyzmq==27.0.0
+    # via
+    #   lerobot
+    #   meshcat
+regex==2025.7.34
+    # via
+    #   diffusers
+    #   transformers
+requests==2.32.4
+    # via
+    #   datasets
+    #   diffusers
+    #   dm-control
+    #   huggingface-hub
+    #   transformers
+    #   wandb
+rerun-sdk==0.22.1
+    # via lerobot
+rhoban-cmeel-jsoncpp==1.9.4.9
+    # via placo
+safetensors==0.5.3
+    # via
+    #   accelerate
+    #   diffusers
+    #   lerobot
+    #   transformers
+scikit-image==0.25.2
+    # via
+    #   gym-pusht
+    #   lerobot
+scipy==1.15.3
+    # via
+    #   dm-control
+    #   scikit-image
+sentry-sdk==2.34.1
+    # via wandb
+shapely==2.1.1
+    # via gym-pusht
+six==1.17.0
+    # via
+    #   pynput
+    #   python-dateutil
+smmap==5.0.2
+    # via gitdb
+stack-data==0.6.3
+    # via ipython
+sympy==1.14.0
+    # via torch
+termcolor==3.1.0
+    # via lerobot
+tifffile==2025.5.10
+    # via scikit-image
+tokenizers==0.21.4
+    # via transformers
+toml==0.10.2
+    # via draccus
+tomli==2.2.1
+    # via
+    #   cmeel
+    #   coverage
+    #   pytest
+torch==2.7.1
+    # via
+    #   accelerate
+    #   lerobot
+    #   torchvision
+torchcodec==0.5
+    # via lerobot
+torchvision==0.22.1
+    # via lerobot
+tornado==6.5.1
+    # via meshcat
+tqdm==4.67.1
+    # via
+    #   datasets
+    #   dm-control
+    #   huggingface-hub
+    #   transformers
+traitlets==5.14.3
+    # via
+    #   ipython
+    #   matplotlib-inline
+transformers==4.51.3
+    # via lerobot
+typing-extensions==4.14.1
+    # via
+    #   aiosignal
+    #   exceptiongroup
+    #   gymnasium
+    #   huggingface-hub
+    #   ipython
+    #   multidict
+    #   pydantic
+    #   pydantic-core
+    #   rerun-sdk
+    #   torch
+    #   typing-inspect
+    #   typing-inspection
+    #   wandb
+typing-inspect==0.9.0
+    # via draccus
+typing-inspection==0.4.1
+    # via pydantic
+tzdata==2025.2
+    # via pandas
+u-msgpack-python==2.8.0
+    # via meshcat
+urllib3==2.5.0
+    # via
+    #   requests
+    #   sentry-sdk
+virtualenv==20.32.0
+    # via pre-commit
+wandb==0.21.0
+    # via lerobot
+wcwidth==0.2.13
+    # via prompt-toolkit
+werkzeug==3.1.3
+    # via flask
+wrapt==1.17.2
+    # via dm-tree
+xxhash==3.5.0
+    # via datasets
+yarl==1.20.1
+    # via aiohttp
+zipp==3.23.0
+    # via importlib-metadata
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools

requirements-ubuntu.txt

@@ -0,0 +1,650 @@
+#
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
+#
+#    pip-compile --output-file=requirements-ubuntu.txt requirements.in
+#
+-e .[all]
+    # via -[all]
+absl-py==2.3.1
+    # via
+    #   dm-control
+    #   dm-env
+    #   dm-tree
+    #   labmaze
+    #   mujoco
+accelerate==1.9.0
+    # via lerobot
+aiohappyeyeballs==2.6.1
+    # via aiohttp
+aiohttp==3.12.15
+    # via fsspec
+aiosignal==1.4.0
+    # via aiohttp
+annotated-types==0.7.0
+    # via pydantic
+asttokens==3.0.0
+    # via stack-data
+async-timeout==5.0.1
+    # via aiohttp
+attrs==25.3.0
+    # via
+    #   aiohttp
+    #   dm-tree
+    #   jsonlines
+    #   rerun-sdk
+av==15.0.0
+    # via lerobot
+blinker==1.9.0
+    # via flask
+certifi==2025.7.14
+    # via
+    #   requests
+    #   sentry-sdk
+cffi==1.17.1
+    # via pymunk
+cfgv==3.4.0
+    # via pre-commit
+charset-normalizer==3.4.2
+    # via requests
+click==8.2.1
+    # via
+    #   flask
+    #   wandb
+cloudpickle==3.1.1
+    # via gymnasium
+cmake==4.0.3
+    # via lerobot
+cmeel==0.57.3
+    # via
+    #   cmeel-assimp
+    #   cmeel-boost
+    #   cmeel-console-bridge
+    #   cmeel-octomap
+    #   cmeel-qhull
+    #   cmeel-tinyxml2
+    #   cmeel-urdfdom
+    #   cmeel-zlib
+    #   coal-library
+    #   eigenpy
+    #   eiquadprog
+    #   pin
+    #   placo
+    #   rhoban-cmeel-jsoncpp
+cmeel-assimp==5.4.3.1
+    # via coal-library
+cmeel-boost==1.87.0.1
+    # via
+    #   coal-library
+    #   eigenpy
+    #   eiquadprog
+    #   pin
+cmeel-console-bridge==1.0.2.3
+    # via cmeel-urdfdom
+cmeel-octomap==1.10.0
+    # via coal-library
+cmeel-qhull==8.0.2.1
+    # via coal-library
+cmeel-tinyxml2==10.0.0
+    # via cmeel-urdfdom
+cmeel-urdfdom==4.0.1
+    # via pin
+cmeel-zlib==1.3.1
+    # via cmeel-assimp
+coal-library==3.0.1
+    # via pin
+contourpy==1.3.2
+    # via matplotlib
+coverage[toml]==7.10.1
+    # via pytest-cov
+cycler==0.12.1
+    # via matplotlib
+datasets==3.6.0
+    # via lerobot
+debugpy==1.8.15
+    # via lerobot
+decorator==5.2.1
+    # via ipython
+deepdiff==8.5.0
+    # via lerobot
+diffusers==0.34.0
+    # via lerobot
+dill==0.3.8
+    # via
+    #   datasets
+    #   multiprocess
+distlib==0.4.0
+    # via virtualenv
+dm-control==1.0.14
+    # via gym-aloha
+dm-env==1.6
+    # via dm-control
+dm-tree==0.1.9
+    # via
+    #   dm-control
+    #   dm-env
+docopt==0.6.2
+    # via num2words
+draccus==0.10.0
+    # via lerobot
+dynamixel-sdk==3.7.31
+    # via lerobot
+eigenpy==3.10.3
+    # via coal-library
+einops==0.8.1
+    # via lerobot
+eiquadprog==1.2.9
+    # via placo
+evdev==1.9.2
+    # via pynput
+exceptiongroup==1.3.0
+    # via
+    #   ipython
+    #   pytest
+executing==2.2.0
+    # via stack-data
+farama-notifications==0.0.4
+    # via gymnasium
+feetech-servo-sdk==1.0.0
+    # via lerobot
+filelock==3.18.0
+    # via
+    #   datasets
+    #   diffusers
+    #   huggingface-hub
+    #   torch
+    #   transformers
+    #   virtualenv
+flask==3.1.1
+    # via lerobot
+fonttools==4.59.0
+    # via matplotlib
+frozenlist==1.7.0
+    # via
+    #   aiohttp
+    #   aiosignal
+fsspec[http]==2025.3.0
+    # via
+    #   datasets
+    #   huggingface-hub
+    #   torch
+gitdb==4.0.12
+    # via gitpython
+gitpython==3.1.45
+    # via wandb
+glfw==2.9.0
+    # via
+    #   dm-control
+    #   mujoco
+grpcio==1.73.1
+    # via
+    #   grpcio-tools
+    #   lerobot
+grpcio-tools==1.73.1
+    # via lerobot
+gym-aloha==0.1.1
+    # via lerobot
+gym-hil==0.1.10
+    # via lerobot
+gym-pusht==0.1.5
+    # via lerobot
+gym-xarm==0.1.1
+    # via lerobot
+gymnasium==0.29.1
+    # via
+    #   gym-aloha
+    #   gym-hil
+    #   gym-pusht
+    #   gym-xarm
+    #   gymnasium-robotics
+    #   lerobot
+    #   pettingzoo
+gymnasium-robotics==1.2.4
+    # via gym-xarm
+hf-transfer==0.1.9
+    # via huggingface-hub
+hf-xet==1.1.5
+    # via huggingface-hub
+hidapi==0.14.0.post4
+    # via
+    #   gym-hil
+    #   lerobot
+huggingface-hub[cli,hf-transfer]==0.34.3
+    # via
+    #   accelerate
+    #   datasets
+    #   diffusers
+    #   lerobot
+    #   tokenizers
+    #   transformers
+identify==2.6.12
+    # via pre-commit
+idna==3.10
+    # via
+    #   requests
+    #   yarl
+imageio[ffmpeg]==2.37.0
+    # via
+    #   gym-aloha
+    #   gym-hil
+    #   gymnasium-robotics
+    #   lerobot
+    #   scikit-image
+imageio-ffmpeg==0.6.0
+    # via imageio
+importlib-metadata==8.7.0
+    # via diffusers
+iniconfig==2.1.0
+    # via pytest
+inquirerpy==0.3.4
+    # via huggingface-hub
+ipython==8.37.0
+    # via meshcat
+ischedule==1.2.7
+    # via placo
+itsdangerous==2.2.0
+    # via flask
+jedi==0.19.2
+    # via ipython
+jinja2==3.1.6
+    # via
+    #   flask
+    #   gymnasium-robotics
+    #   torch
+jsonlines==4.0.0
+    # via lerobot
+kiwisolver==1.4.8
+    # via matplotlib
+labmaze==1.0.6
+    # via dm-control
+lazy-loader==0.4
+    # via scikit-image
+lxml==6.0.0
+    # via dm-control
+markupsafe==3.0.2
+    # via
+    #   flask
+    #   jinja2
+    #   werkzeug
+matplotlib==3.10.5
+    # via lerobot
+matplotlib-inline==0.1.7
+    # via ipython
+mergedeep==1.3.4
+    # via draccus
+meshcat==0.3.2
+    # via placo
+mock-serial==0.0.1
+    # via lerobot
+mpmath==1.3.0
+    # via sympy
+mujoco==2.3.7
+    # via
+    #   dm-control
+    #   gym-aloha
+    #   gym-hil
+    #   gym-xarm
+    #   gymnasium-robotics
+multidict==6.6.3
+    # via
+    #   aiohttp
+    #   yarl
+multiprocess==0.70.16
+    # via datasets
+mypy-extensions==1.1.0
+    # via typing-inspect
+networkx==3.4.2
+    # via
+    #   scikit-image
+    #   torch
+nodeenv==1.9.1
+    # via pre-commit
+num2words==0.5.14
+    # via lerobot
+numpy==2.2.6
+    # via
+    #   accelerate
+    #   cmeel-boost
+    #   contourpy
+    #   datasets
+    #   diffusers
+    #   dm-control
+    #   dm-env
+    #   dm-tree
+    #   gymnasium
+    #   gymnasium-robotics
+    #   imageio
+    #   labmaze
+    #   matplotlib
+    #   meshcat
+    #   mujoco
+    #   opencv-python
+    #   opencv-python-headless
+    #   pandas
+    #   pettingzoo
+    #   rerun-sdk
+    #   scikit-image
+    #   scipy
+    #   shapely
+    #   tifffile
+    #   torchvision
+    #   transformers
+nvidia-cublas-cu12==12.6.4.1
+    # via
+    #   nvidia-cudnn-cu12
+    #   nvidia-cusolver-cu12
+    #   torch
+nvidia-cuda-cupti-cu12==12.6.80
+    # via torch
+nvidia-cuda-nvrtc-cu12==12.6.77
+    # via torch
+nvidia-cuda-runtime-cu12==12.6.77
+    # via torch
+nvidia-cudnn-cu12==9.5.1.17
+    # via torch
+nvidia-cufft-cu12==11.3.0.4
+    # via torch
+nvidia-cufile-cu12==1.11.1.6
+    # via torch
+nvidia-curand-cu12==10.3.7.77
+    # via torch
+nvidia-cusolver-cu12==11.7.1.2
+    # via torch
+nvidia-cusparse-cu12==12.5.4.2
+    # via
+    #   nvidia-cusolver-cu12
+    #   torch
+nvidia-cusparselt-cu12==0.6.3
+    # via torch
+nvidia-nccl-cu12==2.26.2
+    # via torch
+nvidia-nvjitlink-cu12==12.6.85
+    # via
+    #   nvidia-cufft-cu12
+    #   nvidia-cusolver-cu12
+    #   nvidia-cusparse-cu12
+    #   torch
+nvidia-nvtx-cu12==12.6.77
+    # via torch
+opencv-python==4.12.0.88
+    # via gym-pusht
+opencv-python-headless==4.12.0.88
+    # via lerobot
+orderly-set==5.5.0
+    # via deepdiff
+packaging==25.0
+    # via
+    #   accelerate
+    #   datasets
+    #   huggingface-hub
+    #   lazy-loader
+    #   lerobot
+    #   matplotlib
+    #   pytest
+    #   scikit-image
+    #   transformers
+    #   wandb
+pandas==2.3.1
+    # via
+    #   datasets
+    #   lerobot
+parso==0.8.4
+    # via jedi
+pettingzoo==1.24.3
+    # via gymnasium-robotics
+pexpect==4.9.0
+    # via ipython
+pfzy==0.3.4
+    # via inquirerpy
+pillow==11.3.0
+    # via
+    #   diffusers
+    #   imageio
+    #   matplotlib
+    #   meshcat
+    #   rerun-sdk
+    #   scikit-image
+    #   torchvision
+pin==3.4.0
+    # via placo
+placo==0.9.14
+    # via lerobot
+platformdirs==4.3.8
+    # via
+    #   virtualenv
+    #   wandb
+pluggy==1.6.0
+    # via
+    #   pytest
+    #   pytest-cov
+pre-commit==4.2.0
+    # via lerobot
+prompt-toolkit==3.0.51
+    # via
+    #   inquirerpy
+    #   ipython
+propcache==0.3.2
+    # via
+    #   aiohttp
+    #   yarl
+protobuf==6.31.0
+    # via
+    #   dm-control
+    #   grpcio-tools
+    #   lerobot
+    #   wandb
+psutil==7.0.0
+    # via
+    #   accelerate
+    #   imageio
+ptyprocess==0.7.0
+    # via pexpect
+pure-eval==0.2.3
+    # via stack-data
+pyarrow==21.0.0
+    # via
+    #   datasets
+    #   rerun-sdk
+pycparser==2.22
+    # via cffi
+pydantic==2.11.7
+    # via wandb
+pydantic-core==2.33.2
+    # via pydantic
+pygame==2.6.1
+    # via
+    #   gym-hil
+    #   gym-pusht
+    #   lerobot
+pygments==2.19.2
+    # via
+    #   ipython
+    #   pytest
+pymunk==6.11.1
+    # via
+    #   gym-pusht
+    #   lerobot
+pyngrok==7.2.12
+    # via meshcat
+pynput==1.8.1
+    # via
+    #   gym-hil
+    #   lerobot
+pyopengl==3.1.9
+    # via
+    #   dm-control
+    #   mujoco
+pyparsing==3.2.3
+    # via
+    #   dm-control
+    #   matplotlib
+pyrealsense2==2.56.5.9235
+    # via lerobot
+pyserial==3.5
+    # via
+    #   dynamixel-sdk
+    #   feetech-servo-sdk
+    #   lerobot
+pytest==8.4.1
+    # via
+    #   lerobot
+    #   pytest-cov
+    #   pytest-timeout
+pytest-cov==6.2.1
+    # via lerobot
+pytest-timeout==2.4.0
+    # via lerobot
+python-dateutil==2.9.0.post0
+    # via
+    #   matplotlib
+    #   pandas
+python-xlib==0.33
+    # via pynput
+pytz==2025.2
+    # via pandas
+pyyaml==6.0.2
+    # via
+    #   accelerate
+    #   datasets
+    #   draccus
+    #   huggingface-hub
+    #   pre-commit
+    #   pyngrok
+    #   pyyaml-include
+    #   transformers
+    #   wandb
+pyyaml-include==1.4.1
+    # via draccus
+pyzmq==27.0.0
+    # via
+    #   lerobot
+    #   meshcat
+regex==2025.7.34
+    # via
+    #   diffusers
+    #   transformers
+requests==2.32.4
+    # via
+    #   datasets
+    #   diffusers
+    #   dm-control
+    #   huggingface-hub
+    #   transformers
+    #   wandb
+rerun-sdk==0.22.1
+    # via lerobot
+rhoban-cmeel-jsoncpp==1.9.4.9
+    # via placo
+safetensors==0.5.3
+    # via
+    #   accelerate
+    #   diffusers
+    #   lerobot
+    #   transformers
+scikit-image==0.25.2
+    # via
+    #   gym-pusht
+    #   lerobot
+scipy==1.15.3
+    # via
+    #   dm-control
+    #   scikit-image
+sentry-sdk==2.34.1
+    # via wandb
+shapely==2.1.1
+    # via gym-pusht
+six==1.17.0
+    # via
+    #   pynput
+    #   python-dateutil
+    #   python-xlib
+smmap==5.0.2
+    # via gitdb
+stack-data==0.6.3
+    # via ipython
+sympy==1.14.0
+    # via torch
+termcolor==3.1.0
+    # via lerobot
+tifffile==2025.5.10
+    # via scikit-image
+tokenizers==0.21.4
+    # via transformers
+toml==0.10.2
+    # via draccus
+tomli==2.2.1
+    # via
+    #   cmeel
+    #   coverage
+    #   pytest
+torch==2.7.1
+    # via
+    #   accelerate
+    #   lerobot
+    #   torchvision
+torchcodec==0.5
+    # via lerobot
+torchvision==0.22.1
+    # via lerobot
+tornado==6.5.1
+    # via meshcat
+tqdm==4.67.1
+    # via
+    #   datasets
+    #   dm-control
+    #   huggingface-hub
+    #   transformers
+traitlets==5.14.3
+    # via
+    #   ipython
+    #   matplotlib-inline
+transformers==4.51.3
+    # via lerobot
+triton==3.3.1
+    # via torch
+typing-extensions==4.14.1
+    # via
+    #   aiosignal
+    #   exceptiongroup
+    #   gymnasium
+    #   huggingface-hub
+    #   ipython
+    #   multidict
+    #   pydantic
+    #   pydantic-core
+    #   rerun-sdk
+    #   torch
+    #   typing-inspect
+    #   typing-inspection
+    #   wandb
+typing-inspect==0.9.0
+    # via draccus
+typing-inspection==0.4.1
+    # via pydantic
+tzdata==2025.2
+    # via pandas
+u-msgpack-python==2.8.0
+    # via meshcat
+urllib3==2.5.0
+    # via
+    #   requests
+    #   sentry-sdk
+virtualenv==20.32.0
+    # via pre-commit
+wandb==0.21.0
+    # via lerobot
+wcwidth==0.2.13
+    # via prompt-toolkit
+werkzeug==3.1.3
+    # via flask
+wrapt==1.17.2
+    # via dm-tree
+xxhash==3.5.0
+    # via datasets
+yarl==1.20.1
+    # via aiohttp
+zipp==3.23.0
+    # via importlib-metadata
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools

requirements.in

@@ -0,0 +1,9 @@
+# requirements.in
+
+# requirements-macos.txt was generated on macOS and is platform-specific (macOS 15.5 24F74 arm64).
+# Darwin MacBook-Pro.local 24.5.0 Darwin Kernel Version 24.5.0: Tue Apr 22 19:54:43 PDT 2025; root:xnu-11417.121.6~2/RELEASE_ARM64_T8132 arm64
+
+# requirements-ubuntu.txt was generated on Linux and is platform-specific (Ubuntu 24.04.2 LTS x86_64).
+# Linux mlerobot-linux 6.14.0-27-generic #27~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Jul 22 17:38:49 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
+
+-e .[all]

src/lerobot/calibrate.py

@@ -18,7 +18,7 @@ Helper to recalibrate your device (robot or teleoperator).
 Example:
 
 ```shell
-python -m lerobot.calibrate \
+lerobot-calibrate \
     --teleop.type=so100_leader \
     --teleop.port=/dev/tty.usbmodem58760431551 \
     --teleop.id=blue
@@ -82,5 +82,9 @@ def calibrate(cfg: CalibrateConfig):
     device.disconnect()
 
 
-if __name__ == "__main__":
+def main():
     calibrate()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/cameras/opencv/camera_opencv.py

@@ -60,7 +60,7 @@ class OpenCVCamera(Camera):
     or port changes, especially on Linux. Use the provided utility script to find
     available camera indices or paths:
     ```bash
-    python -m lerobot.find_cameras opencv
+    lerobot-find-cameras opencv
     ```
 
     The camera's default settings (FPS, resolution, color mode) are used unless
@@ -165,8 +165,7 @@ class OpenCVCamera(Camera):
             self.videocapture.release()
             self.videocapture = None
             raise ConnectionError(
-                f"Failed to open {self}."
-                f"Run `python -m lerobot.find_cameras opencv` to find available cameras."
+                f"Failed to open {self}.Run `lerobot-find-cameras opencv` to find available cameras."
             )
 
         self._configure_capture_settings()

src/lerobot/cameras/realsense/camera_realsense.py

@@ -51,7 +51,7 @@ class RealSenseCamera(Camera):
 
     Use the provided utility script to find available camera indices and default profiles:
     ```bash
-    python -m lerobot.find_cameras realsense
+    lerobot-find-cameras realsense
     ```
 
     A `RealSenseCamera` instance requires a configuration object specifying the
@@ -176,8 +176,7 @@ class RealSenseCamera(Camera):
             self.rs_profile = None
             self.rs_pipeline = None
             raise ConnectionError(
-                f"Failed to open {self}."
-                "Run `python -m lerobot.find_cameras realsense` to find available cameras."
+                f"Failed to open {self}.Run `lerobot-find-cameras realsense` to find available cameras."
             ) from e
 
         self._configure_capture_settings()

src/lerobot/configs/policies.py

@@ -27,6 +27,7 @@ from huggingface_hub.constants import CONFIG_NAME
 from huggingface_hub.errors import HfHubHTTPError
 
 from lerobot.configs.types import FeatureType, NormalizationMode, PolicyFeature
+from lerobot.constants import ACTION, OBS_STATE
 from lerobot.optim.optimizers import OptimizerConfig
 from lerobot.optim.schedulers import LRSchedulerConfig
 from lerobot.utils.hub import HubMixin
@@ -119,8 +120,8 @@ class PreTrainedConfig(draccus.ChoiceRegistry, HubMixin, abc.ABC):
 
     @property
     def robot_state_feature(self) -> PolicyFeature | None:
-        for _, ft in self.input_features.items():
-            if ft.type is FeatureType.STATE:
+        for ft_name, ft in self.input_features.items():
+            if ft.type is FeatureType.STATE and ft_name == OBS_STATE:
                 return ft
         return None
 
@@ -137,8 +138,8 @@ class PreTrainedConfig(draccus.ChoiceRegistry, HubMixin, abc.ABC):
 
     @property
     def action_feature(self) -> PolicyFeature | None:
-        for _, ft in self.output_features.items():
-            if ft.type is FeatureType.ACTION:
+        for ft_name, ft in self.output_features.items():
+            if ft.type is FeatureType.ACTION and ft_name == ACTION:
                 return ft
         return None
 

src/lerobot/datasets/aggregate.py

@@ -0,0 +1,505 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+import shutil
+from pathlib import Path
+
+import pandas as pd
+import tqdm
+
+from lerobot.datasets.compute_stats import aggregate_stats
+from lerobot.datasets.lerobot_dataset import LeRobotDatasetMetadata
+from lerobot.datasets.utils import (
+    DEFAULT_CHUNK_SIZE,
+    DEFAULT_DATA_FILE_SIZE_IN_MB,
+    DEFAULT_DATA_PATH,
+    DEFAULT_EPISODES_PATH,
+    DEFAULT_VIDEO_FILE_SIZE_IN_MB,
+    DEFAULT_VIDEO_PATH,
+    get_parquet_file_size_in_mb,
+    get_video_size_in_mb,
+    to_parquet_with_hf_images,
+    update_chunk_file_indices,
+    write_info,
+    write_stats,
+    write_tasks,
+)
+from lerobot.datasets.video_utils import concat_video_files
+
+
+def validate_all_metadata(all_metadata: list[LeRobotDatasetMetadata]):
+    """Validates that all dataset metadata have consistent properties.
+
+    Ensures all datasets have the same fps, robot_type, and features to guarantee
+    compatibility when aggregating them into a single dataset.
+
+    Args:
+        all_metadata: List of LeRobotDatasetMetadata objects to validate.
+
+    Returns:
+        tuple: A tuple containing (fps, robot_type, features) from the first metadata.
+
+    Raises:
+        ValueError: If any metadata has different fps, robot_type, or features
+                   than the first metadata in the list.
+    """
+
+    fps = all_metadata[0].fps
+    robot_type = all_metadata[0].robot_type
+    features = all_metadata[0].features
+
+    for meta in tqdm.tqdm(all_metadata, desc="Validate all meta data"):
+        if fps != meta.fps:
+            raise ValueError(f"Same fps is expected, but got fps={meta.fps} instead of {fps}.")
+        if robot_type != meta.robot_type:
+            raise ValueError(
+                f"Same robot_type is expected, but got robot_type={meta.robot_type} instead of {robot_type}."
+            )
+        if features != meta.features:
+            raise ValueError(
+                f"Same features is expected, but got features={meta.features} instead of {features}."
+            )
+
+    return fps, robot_type, features
+
+
+def update_data_df(df, src_meta, dst_meta):
+    """Updates a data DataFrame with new indices and task mappings for aggregation.
+
+    Adjusts episode indices, frame indices, and task indices to account for
+    previously aggregated data in the destination dataset.
+
+    Args:
+        df: DataFrame containing the data to be updated.
+        src_meta: Source dataset metadata.
+        dst_meta: Destination dataset metadata.
+
+    Returns:
+        pd.DataFrame: Updated DataFrame with adjusted indices.
+    """
+
+    def _update(row):
+        row["episode_index"] = row["episode_index"] + dst_meta.info["total_episodes"]
+        row["index"] = row["index"] + dst_meta.info["total_frames"]
+        task = src_meta.tasks.iloc[row["task_index"]].name
+        row["task_index"] = dst_meta.tasks.loc[task].task_index.item()
+        return row
+
+    return df.apply(_update, axis=1)
+
+
+def update_meta_data(
+    df,
+    dst_meta,
+    meta_idx,
+    data_idx,
+    videos_idx,
+):
+    """Updates metadata DataFrame with new chunk, file, and timestamp indices.
+
+    Adjusts all indices and timestamps to account for previously aggregated
+    data and videos in the destination dataset.
+
+    Args:
+        df: DataFrame containing the metadata to be updated.
+        dst_meta: Destination dataset metadata.
+        meta_idx: Dictionary containing current metadata chunk and file indices.
+        data_idx: Dictionary containing current data chunk and file indices.
+        videos_idx: Dictionary containing current video indices and timestamps.
+
+    Returns:
+        pd.DataFrame: Updated DataFrame with adjusted indices and timestamps.
+    """
+
+    def _update(row):
+        row["meta/episodes/chunk_index"] = row["meta/episodes/chunk_index"] + meta_idx["chunk"]
+        row["meta/episodes/file_index"] = row["meta/episodes/file_index"] + meta_idx["file"]
+        row["data/chunk_index"] = row["data/chunk_index"] + data_idx["chunk"]
+        row["data/file_index"] = row["data/file_index"] + data_idx["file"]
+        for key, video_idx in videos_idx.items():
+            row[f"videos/{key}/chunk_index"] = row[f"videos/{key}/chunk_index"] + video_idx["chunk"]
+            row[f"videos/{key}/file_index"] = row[f"videos/{key}/file_index"] + video_idx["file"]
+            row[f"videos/{key}/from_timestamp"] = (
+                row[f"videos/{key}/from_timestamp"] + video_idx["latest_duration"]
+            )
+            row[f"videos/{key}/to_timestamp"] = (
+                row[f"videos/{key}/to_timestamp"] + video_idx["latest_duration"]
+            )
+
+        row["dataset_from_index"] = row["dataset_from_index"] + dst_meta.info["total_frames"]
+        row["dataset_to_index"] = row["dataset_to_index"] + dst_meta.info["total_frames"]
+        row["episode_index"] = row["episode_index"] + dst_meta.info["total_episodes"]
+        return row
+
+    return df.apply(_update, axis=1)
+
+
+def aggregate_datasets(
+    repo_ids: list[str],
+    aggr_repo_id: str,
+    roots: list[Path] | None = None,
+    aggr_root: Path | None = None,
+    data_files_size_in_mb: float | None = None,
+    video_files_size_in_mb: float | None = None,
+    chunk_size: int | None = None,
+):
+    """Aggregates multiple LeRobot datasets into a single unified dataset.
+
+    This is the main function that orchestrates the aggregation process by:
+    1. Loading and validating all source dataset metadata
+    2. Creating a new destination dataset with unified tasks
+    3. Aggregating videos, data, and metadata from all source datasets
+    4. Finalizing the aggregated dataset with proper statistics
+
+    Args:
+        repo_ids: List of repository IDs for the datasets to aggregate.
+        aggr_repo_id: Repository ID for the aggregated output dataset.
+        roots: Optional list of root paths for the source datasets.
+        aggr_root: Optional root path for the aggregated dataset.
+        data_files_size_in_mb: Maximum size for data files in MB (defaults to DEFAULT_DATA_FILE_SIZE_IN_MB)
+        video_files_size_in_mb: Maximum size for video files in MB (defaults to DEFAULT_VIDEO_FILE_SIZE_IN_MB)
+        chunk_size: Maximum number of files per chunk (defaults to DEFAULT_CHUNK_SIZE)
+    """
+    logging.info("Start aggregate_datasets")
+
+    if data_files_size_in_mb is None:
+        data_files_size_in_mb = DEFAULT_DATA_FILE_SIZE_IN_MB
+    if video_files_size_in_mb is None:
+        video_files_size_in_mb = DEFAULT_VIDEO_FILE_SIZE_IN_MB
+    if chunk_size is None:
+        chunk_size = DEFAULT_CHUNK_SIZE
+
+    all_metadata = (
+        [LeRobotDatasetMetadata(repo_id) for repo_id in repo_ids]
+        if roots is None
+        else [
+            LeRobotDatasetMetadata(repo_id, root=root) for repo_id, root in zip(repo_ids, roots, strict=False)
+        ]
+    )
+    fps, robot_type, features = validate_all_metadata(all_metadata)
+    video_keys = [key for key in features if features[key]["dtype"] == "video"]
+
+    dst_meta = LeRobotDatasetMetadata.create(
+        repo_id=aggr_repo_id,
+        fps=fps,
+        robot_type=robot_type,
+        features=features,
+        root=aggr_root,
+    )
+
+    logging.info("Find all tasks")
+    unique_tasks = pd.concat([m.tasks for m in all_metadata]).index.unique()
+    dst_meta.tasks = pd.DataFrame({"task_index": range(len(unique_tasks))}, index=unique_tasks)
+
+    meta_idx = {"chunk": 0, "file": 0}
+    data_idx = {"chunk": 0, "file": 0}
+    videos_idx = {
+        key: {"chunk": 0, "file": 0, "latest_duration": 0, "episode_duration": 0} for key in video_keys
+    }
+
+    dst_meta.episodes = {}
+
+    for src_meta in tqdm.tqdm(all_metadata, desc="Copy data and videos"):
+        videos_idx = aggregate_videos(src_meta, dst_meta, videos_idx, video_files_size_in_mb, chunk_size)
+        data_idx = aggregate_data(src_meta, dst_meta, data_idx, data_files_size_in_mb, chunk_size)
+
+        meta_idx = aggregate_metadata(src_meta, dst_meta, meta_idx, data_idx, videos_idx)
+
+        dst_meta.info["total_episodes"] += src_meta.total_episodes
+        dst_meta.info["total_frames"] += src_meta.total_frames
+
+    finalize_aggregation(dst_meta, all_metadata)
+    logging.info("Aggregation complete.")
+
+
+def aggregate_videos(src_meta, dst_meta, videos_idx, video_files_size_in_mb, chunk_size):
+    """Aggregates video chunks from a source dataset into the destination dataset.
+
+    Handles video file concatenation and rotation based on file size limits.
+    Creates new video files when size limits are exceeded.
+
+    Args:
+        src_meta: Source dataset metadata.
+        dst_meta: Destination dataset metadata.
+        videos_idx: Dictionary tracking video chunk and file indices.
+        video_files_size_in_mb: Maximum size for video files in MB (defaults to DEFAULT_VIDEO_FILE_SIZE_IN_MB)
+        chunk_size: Maximum number of files per chunk (defaults to DEFAULT_CHUNK_SIZE)
+
+    Returns:
+        dict: Updated videos_idx with current chunk and file indices.
+    """
+    for key, video_idx in videos_idx.items():
+        unique_chunk_file_pairs = {
+            (chunk, file)
+            for chunk, file in zip(
+                src_meta.episodes[f"videos/{key}/chunk_index"],
+                src_meta.episodes[f"videos/{key}/file_index"],
+                strict=False,
+            )
+        }
+        unique_chunk_file_pairs = sorted(unique_chunk_file_pairs)
+
+        chunk_idx = video_idx["chunk"]
+        file_idx = video_idx["file"]
+
+        for src_chunk_idx, src_file_idx in unique_chunk_file_pairs:
+            src_path = src_meta.root / DEFAULT_VIDEO_PATH.format(
+                video_key=key,
+                chunk_index=src_chunk_idx,
+                file_index=src_file_idx,
+            )
+
+            dst_path = dst_meta.root / DEFAULT_VIDEO_PATH.format(
+                video_key=key,
+                chunk_index=chunk_idx,
+                file_index=file_idx,
+            )
+
+            # If a new file is created, we don't want to increment the latest_duration
+            update_latest_duration = False
+
+            if not dst_path.exists():
+                # First write to this destination file
+                dst_path.parent.mkdir(parents=True, exist_ok=True)
+                shutil.copy(str(src_path), str(dst_path))
+                continue  # not accumulating further, already copied the file in place
+
+            # Check file sizes before appending
+            src_size = get_video_size_in_mb(src_path)
+            dst_size = get_video_size_in_mb(dst_path)
+
+            if dst_size + src_size >= video_files_size_in_mb:
+                # Rotate to a new chunk/file
+                chunk_idx, file_idx = update_chunk_file_indices(chunk_idx, file_idx, chunk_size)
+                dst_path = dst_meta.root / DEFAULT_VIDEO_PATH.format(
+                    video_key=key,
+                    chunk_index=chunk_idx,
+                    file_index=file_idx,
+                )
+                dst_path.parent.mkdir(parents=True, exist_ok=True)
+                shutil.copy(str(src_path), str(dst_path))
+            else:
+                # Get the timestamps shift for this video
+                timestamps_shift_s = dst_meta.info["total_frames"] / dst_meta.info["fps"]
+
+                # Append to existing video file
+                concat_video_files(
+                    [dst_path, src_path],
+                    dst_meta.root,
+                    key,
+                    chunk_idx,
+                    file_idx,
+                )
+                # Update the latest_duration when appending (shifts timestamps!)
+                update_latest_duration = not update_latest_duration
+
+        # Update the videos_idx with the final chunk and file indices for this key
+        videos_idx[key]["chunk"] = chunk_idx
+        videos_idx[key]["file"] = file_idx
+
+        if update_latest_duration:
+            videos_idx[key]["latest_duration"] += timestamps_shift_s
+
+    return videos_idx
+
+
+def aggregate_data(src_meta, dst_meta, data_idx, data_files_size_in_mb, chunk_size):
+    """Aggregates data chunks from a source dataset into the destination dataset.
+
+    Reads source data files, updates indices to match the aggregated dataset,
+    and writes them to the destination with proper file rotation.
+
+    Args:
+        src_meta: Source dataset metadata.
+        dst_meta: Destination dataset metadata.
+        data_idx: Dictionary tracking data chunk and file indices.
+
+    Returns:
+        dict: Updated data_idx with current chunk and file indices.
+    """
+    unique_chunk_file_ids = {
+        (c, f)
+        for c, f in zip(
+            src_meta.episodes["data/chunk_index"], src_meta.episodes["data/file_index"], strict=False
+        )
+    }
+
+    unique_chunk_file_ids = sorted(unique_chunk_file_ids)
+
+    for src_chunk_idx, src_file_idx in unique_chunk_file_ids:
+        src_path = src_meta.root / DEFAULT_DATA_PATH.format(
+            chunk_index=src_chunk_idx, file_index=src_file_idx
+        )
+        df = pd.read_parquet(src_path)
+        df = update_data_df(df, src_meta, dst_meta)
+
+        data_idx = append_or_create_parquet_file(
+            df,
+            src_path,
+            data_idx,
+            data_files_size_in_mb,
+            chunk_size,
+            DEFAULT_DATA_PATH,
+            contains_images=len(dst_meta.image_keys) > 0,
+            aggr_root=dst_meta.root,
+        )
+
+    return data_idx
+
+
+def aggregate_metadata(src_meta, dst_meta, meta_idx, data_idx, videos_idx):
+    """Aggregates metadata from a source dataset into the destination dataset.
+
+    Reads source metadata files, updates all indices and timestamps,
+    and writes them to the destination with proper file rotation.
+
+    Args:
+        src_meta: Source dataset metadata.
+        dst_meta: Destination dataset metadata.
+        meta_idx: Dictionary tracking metadata chunk and file indices.
+        data_idx: Dictionary tracking data chunk and file indices.
+        videos_idx: Dictionary tracking video indices and timestamps.
+
+    Returns:
+        dict: Updated meta_idx with current chunk and file indices.
+    """
+    chunk_file_ids = {
+        (c, f)
+        for c, f in zip(
+            src_meta.episodes["meta/episodes/chunk_index"],
+            src_meta.episodes["meta/episodes/file_index"],
+            strict=False,
+        )
+    }
+
+    chunk_file_ids = sorted(chunk_file_ids)
+    for chunk_idx, file_idx in chunk_file_ids:
+        src_path = src_meta.root / DEFAULT_EPISODES_PATH.format(chunk_index=chunk_idx, file_index=file_idx)
+        df = pd.read_parquet(src_path)
+        df = update_meta_data(
+            df,
+            dst_meta,
+            meta_idx,
+            data_idx,
+            videos_idx,
+        )
+
+        for k in videos_idx:
+            videos_idx[k]["latest_duration"] += videos_idx[k]["episode_duration"]
+
+        meta_idx = append_or_create_parquet_file(
+            df,
+            src_path,
+            meta_idx,
+            DEFAULT_DATA_FILE_SIZE_IN_MB,
+            DEFAULT_CHUNK_SIZE,
+            DEFAULT_EPISODES_PATH,
+            contains_images=False,
+            aggr_root=dst_meta.root,
+        )
+
+    return meta_idx
+
+
+def append_or_create_parquet_file(
+    df: pd.DataFrame,
+    src_path: Path,
+    idx: dict[str, int],
+    max_mb: float,
+    chunk_size: int,
+    default_path: str,
+    contains_images: bool = False,
+    aggr_root: Path = None,
+):
+    """Appends data to an existing parquet file or creates a new one based on size constraints.
+
+    Manages file rotation when size limits are exceeded to prevent individual files
+    from becoming too large. Handles both regular parquet files and those containing images.
+
+    Args:
+        df: DataFrame to write to the parquet file.
+        src_path: Path to the source file (used for size estimation).
+        idx: Dictionary containing current 'chunk' and 'file' indices.
+        max_mb: Maximum allowed file size in MB before rotation.
+        chunk_size: Maximum number of files per chunk before incrementing chunk index.
+        default_path: Format string for generating file paths.
+        contains_images: Whether the data contains images requiring special handling.
+        aggr_root: Root path for the aggregated dataset.
+
+    Returns:
+        dict: Updated index dictionary with current chunk and file indices.
+    """
+    dst_path = aggr_root / default_path.format(chunk_index=idx["chunk"], file_index=idx["file"])
+
+    if not dst_path.exists():
+        dst_path.parent.mkdir(parents=True, exist_ok=True)
+        if contains_images:
+            to_parquet_with_hf_images(df, dst_path)
+        else:
+            df.to_parquet(dst_path)
+        return idx
+
+    src_size = get_parquet_file_size_in_mb(src_path)
+    dst_size = get_parquet_file_size_in_mb(dst_path)
+
+    if dst_size + src_size >= max_mb:
+        idx["chunk"], idx["file"] = update_chunk_file_indices(idx["chunk"], idx["file"], chunk_size)
+        new_path = aggr_root / default_path.format(chunk_index=idx["chunk"], file_index=idx["file"])
+        new_path.parent.mkdir(parents=True, exist_ok=True)
+        final_df = df
+        target_path = new_path
+    else:
+        existing_df = pd.read_parquet(dst_path)
+        final_df = pd.concat([existing_df, df], ignore_index=True)
+        target_path = dst_path
+
+    if contains_images:
+        to_parquet_with_hf_images(final_df, target_path)
+    else:
+        final_df.to_parquet(target_path)
+
+    return idx
+
+
+def finalize_aggregation(aggr_meta, all_metadata):
+    """Finalizes the dataset aggregation by writing summary files and statistics.
+
+    Writes the tasks file, info file with total counts and splits, and
+    aggregated statistics from all source datasets.
+
+    Args:
+        aggr_meta: Aggregated dataset metadata.
+        all_metadata: List of all source dataset metadata objects.
+    """
+    logging.info("write tasks")
+    write_tasks(aggr_meta.tasks, aggr_meta.root)
+
+    logging.info("write info")
+    aggr_meta.info.update(
+        {
+            "total_tasks": len(aggr_meta.tasks),
+            "total_episodes": sum(m.total_episodes for m in all_metadata),
+            "total_frames": sum(m.total_frames for m in all_metadata),
+            "splits": {"train": f"0:{sum(m.total_episodes for m in all_metadata)}"},
+        }
+    )
+    write_info(aggr_meta.info, aggr_meta.root)
+
+    logging.info("write stats")
+    aggr_meta.stats = aggregate_stats([m.stats for m in all_metadata])
+    write_stats(aggr_meta.stats, aggr_meta.root)

src/lerobot/datasets/backward_compatibility.py

@@ -47,6 +47,18 @@ If you encounter a problem, contact LeRobot maintainers on [Discord](https://dis
 or open an [issue on GitHub](https://github.com/huggingface/lerobot/issues/new/choose).
 """
 
+V30_MESSAGE = """
+The dataset you requested ({repo_id}) is in {version} format.
+While current version of LeRobot is backward-compatible with it, the version of your dataset still uses global
+stats instead of per-episode stats. Update your dataset stats to the new format using this command:
+```
+python -m lerobot.datasets.v30.convert_dataset_v21_to_v30 --repo-id={repo_id}
+```
+
+If you encounter a problem, contact LeRobot maintainers on [Discord](https://discord.com/invite/s3KuuzsPFb)
+or open an [issue on GitHub](https://github.com/huggingface/lerobot/issues/new/choose).
+"""
+
 FUTURE_MESSAGE = """
 The dataset you requested ({repo_id}) is only available in {version} format.
 As we cannot ensure forward compatibility with it, please update your current version of lerobot.
@@ -58,7 +70,12 @@ class CompatibilityError(Exception): ...
 
 class BackwardCompatibilityError(CompatibilityError):
     def __init__(self, repo_id: str, version: packaging.version.Version):
-        message = V2_MESSAGE.format(repo_id=repo_id, version=version)
+        if version.major == 2 and version.minor == 1:
+            message = V30_MESSAGE.format(repo_id=repo_id, version=version)
+        else:
+            raise NotImplementedError(
+                "Contact the maintainer on [Discord](https://discord.com/invite/s3KuuzsPFb)."
+            )
         super().__init__(message)
 
 

src/lerobot/datasets/online_buffer.py

@@ -337,13 +337,11 @@ def compute_sampler_weights(
     if len(offline_dataset) > 0:
         offline_data_mask_indices = []
         for start_index, end_index in zip(
-            offline_dataset.episode_data_index["from"],
-            offline_dataset.episode_data_index["to"],
+            offline_dataset.meta.episodes["dataset_from_index"],
+            offline_dataset.meta.episodes["dataset_to_index"],
             strict=True,
         ):
-            offline_data_mask_indices.extend(
-                range(start_index.item(), end_index.item() - offline_drop_n_last_frames)
-            )
+            offline_data_mask_indices.extend(range(start_index, end_index - offline_drop_n_last_frames))
         offline_data_mask = torch.zeros(len(offline_dataset), dtype=torch.bool)
         offline_data_mask[torch.tensor(offline_data_mask_indices)] = True
         weights.append(

src/lerobot/datasets/sampler.py

@@ -21,7 +21,8 @@ import torch
 class EpisodeAwareSampler:
     def __init__(
         self,
-        episode_data_index: dict,
+        dataset_from_indices: list[int],
+        dataset_to_indices: list[int],
         episode_indices_to_use: list | None = None,
         drop_n_first_frames: int = 0,
         drop_n_last_frames: int = 0,
@@ -30,7 +31,8 @@ class EpisodeAwareSampler:
         """Sampler that optionally incorporates episode boundary information.
 
         Args:
-            episode_data_index: Dictionary with keys 'from' and 'to' containing the start and end indices of each episode.
+            dataset_from_indices: List of indices containing the start of each episode in the dataset.
+            dataset_to_indices: List of indices containing the end of each episode in the dataset.
             episode_indices_to_use: List of episode indices to use. If None, all episodes are used.
                                     Assumes that episodes are indexed from 0 to N-1.
             drop_n_first_frames: Number of frames to drop from the start of each episode.
@@ -39,12 +41,10 @@ class EpisodeAwareSampler:
         """
         indices = []
         for episode_idx, (start_index, end_index) in enumerate(
-            zip(episode_data_index["from"], episode_data_index["to"], strict=True)
+            zip(dataset_from_indices, dataset_to_indices, strict=True)
         ):
             if episode_indices_to_use is None or episode_idx in episode_indices_to_use:
-                indices.extend(
-                    range(start_index.item() + drop_n_first_frames, end_index.item() - drop_n_last_frames)
-                )
+                indices.extend(range(start_index + drop_n_first_frames, end_index - drop_n_last_frames))
 
         self.indices = indices
         self.shuffle = shuffle

src/lerobot/datasets/utils.py

@@ -18,42 +18,55 @@ import importlib.resources
 import json
 import logging
 from collections.abc import Iterator
-from itertools import accumulate
 from pathlib import Path
 from pprint import pformat
-from types import SimpleNamespace
 from typing import Any
 
 import datasets
-import jsonlines
 import numpy as np
 import packaging.version
+import pandas
+import pandas as pd
+import pyarrow.parquet as pq
 import torch
+from datasets import Dataset, concatenate_datasets
 from datasets.table import embed_table_storage
 from huggingface_hub import DatasetCard, DatasetCardData, HfApi
 from huggingface_hub.errors import RevisionNotFoundError
 from PIL import Image as PILImage
 from torchvision import transforms
 
-from lerobot.configs.types import DictLike, FeatureType, PolicyFeature
+from lerobot.configs.types import FeatureType, PolicyFeature
 from lerobot.datasets.backward_compatibility import (
-    V21_MESSAGE,
+    FUTURE_MESSAGE,
     BackwardCompatibilityError,
     ForwardCompatibilityError,
 )
 from lerobot.utils.utils import is_valid_numpy_dtype_string
 
-DEFAULT_CHUNK_SIZE = 1000  # Max number of episodes per chunk
+DEFAULT_CHUNK_SIZE = 1000  # Max number of files per chunk
+DEFAULT_DATA_FILE_SIZE_IN_MB = 100  # Max size per file
+DEFAULT_VIDEO_FILE_SIZE_IN_MB = 500  # Max size per file
 
 INFO_PATH = "meta/info.json"
-EPISODES_PATH = "meta/episodes.jsonl"
 STATS_PATH = "meta/stats.json"
-EPISODES_STATS_PATH = "meta/episodes_stats.jsonl"
-TASKS_PATH = "meta/tasks.jsonl"
 
-DEFAULT_VIDEO_PATH = "videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4"
-DEFAULT_PARQUET_PATH = "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet"
-DEFAULT_IMAGE_PATH = "images/{image_key}/episode_{episode_index:06d}/frame_{frame_index:06d}.png"
+EPISODES_DIR = "meta/episodes"
+DATA_DIR = "data"
+VIDEO_DIR = "videos"
+
+CHUNK_FILE_PATTERN = "chunk-{chunk_index:03d}/file-{file_index:03d}"
+DEFAULT_TASKS_PATH = "meta/tasks.parquet"
+DEFAULT_EPISODES_PATH = EPISODES_DIR + "/" + CHUNK_FILE_PATTERN + ".parquet"
+DEFAULT_DATA_PATH = DATA_DIR + "/" + CHUNK_FILE_PATTERN + ".parquet"
+DEFAULT_VIDEO_PATH = VIDEO_DIR + "/{video_key}/" + CHUNK_FILE_PATTERN + ".mp4"
+DEFAULT_IMAGE_PATH = "images/{image_key}/episode-{episode_index:06d}/frame-{frame_index:06d}.png"
+
+LEGACY_EPISODES_PATH = "meta/episodes.jsonl"
+LEGACY_EPISODES_STATS_PATH = "meta/episodes_stats.jsonl"
+LEGACY_TASKS_PATH = "meta/tasks.jsonl"
+LEGACY_DEFAULT_VIDEO_PATH = "videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4"
+LEGACY_DEFAULT_PARQUET_PATH = "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet"
 
 DATASET_CARD_TEMPLATE = """
 ---
@@ -74,6 +87,65 @@ DEFAULT_FEATURES = {
 }
 
 
+def get_parquet_file_size_in_mb(parquet_path: str | Path) -> float:
+    metadata = pq.read_metadata(parquet_path)
+    total_uncompressed_size = 0
+    for row_group in range(metadata.num_row_groups):
+        rg_metadata = metadata.row_group(row_group)
+        for column in range(rg_metadata.num_columns):
+            col_metadata = rg_metadata.column(column)
+            total_uncompressed_size += col_metadata.total_uncompressed_size
+    return total_uncompressed_size / (1024**2)
+
+
+def get_hf_dataset_size_in_mb(hf_ds: Dataset) -> int:
+    return hf_ds.data.nbytes // (1024**2)
+
+
+def get_hf_dataset_cache_dir(hf_ds: Dataset) -> Path | None:
+    if hf_ds.cache_files is None or len(hf_ds.cache_files) == 0:
+        return None
+    return Path(hf_ds.cache_files[0]["filename"]).parents[2]
+
+
+def update_chunk_file_indices(chunk_idx: int, file_idx: int, chunks_size: int) -> tuple[int, int]:
+    if file_idx == chunks_size - 1:
+        file_idx = 0
+        chunk_idx += 1
+    else:
+        file_idx += 1
+    return chunk_idx, file_idx
+
+
+def load_nested_dataset(pq_dir: Path, features: datasets.Features | None = None) -> Dataset:
+    """Find parquet files in provided directory {pq_dir}/chunk-xxx/file-xxx.parquet
+    Convert parquet files to pyarrow memory mapped in a cache folder for efficient RAM usage
+    Concatenate all pyarrow references to return HF Dataset format
+
+    Args:
+        pq_dir: Directory containing parquet files
+        features: Optional features schema to ensure consistent loading of complex types like images
+    """
+    paths = sorted(pq_dir.glob("*/*.parquet"))
+    if len(paths) == 0:
+        raise FileNotFoundError(f"Provided directory does not contain any parquet file: {pq_dir}")
+
+    # TODO(rcadene): set num_proc to accelerate conversion to pyarrow
+    datasets = [Dataset.from_parquet(str(path), features=features) for path in paths]
+    return concatenate_datasets(datasets)
+
+
+def get_parquet_num_frames(parquet_path: str | Path) -> int:
+    metadata = pq.read_metadata(parquet_path)
+    return metadata.num_rows
+
+
+def get_video_size_in_mb(mp4_path: Path) -> float:
+    file_size_bytes = mp4_path.stat().st_size
+    file_size_mb = file_size_bytes / (1024**2)
+    return file_size_mb
+
+
 def flatten_dict(d: dict, parent_key: str = "", sep: str = "/") -> dict:
     """Flatten a nested dictionary structure by collapsing nested keys into one key with a separator.
 
@@ -82,6 +154,7 @@ def flatten_dict(d: dict, parent_key: str = "", sep: str = "/") -> dict:
     >>> dct = {"a": {"b": 1, "c": {"d": 2}}, "e": 3}`
     >>> print(flatten_dict(dct))
     {"a/b": 1, "a/c/d": 2, "e": 3}
+    ```
     """
     items = []
     for k, v in d.items():
@@ -106,23 +179,13 @@ def unflatten_dict(d: dict, sep: str = "/") -> dict:
     return outdict
 
 
-def get_nested_item(obj: DictLike, flattened_key: str, sep: str = "/") -> Any:
-    split_keys = flattened_key.split(sep)
-    getter = obj[split_keys[0]]
-    if len(split_keys) == 1:
-        return getter
-
-    for key in split_keys[1:]:
-        getter = getter[key]
-
-    return getter
-
-
 def serialize_dict(stats: dict[str, torch.Tensor | np.ndarray | dict]) -> dict:
     serialized_dict = {}
     for key, value in flatten_dict(stats).items():
         if isinstance(value, (torch.Tensor, np.ndarray)):
             serialized_dict[key] = value.tolist()
+        elif isinstance(value, list) and isinstance(value[0], (int, float, list)):
+            serialized_dict[key] = value
         elif isinstance(value, np.generic):
             serialized_dict[key] = value.item()
         elif isinstance(value, (int, float)):
@@ -152,24 +215,7 @@ def write_json(data: dict, fpath: Path) -> None:
         json.dump(data, f, indent=4, ensure_ascii=False)
 
 
-def load_jsonlines(fpath: Path) -> list[Any]:
-    with jsonlines.open(fpath, "r") as reader:
-        return list(reader)
-
-
-def write_jsonlines(data: dict, fpath: Path) -> None:
-    fpath.parent.mkdir(exist_ok=True, parents=True)
-    with jsonlines.open(fpath, "w") as writer:
-        writer.write_all(data)
-
-
-def append_jsonlines(data: dict, fpath: Path) -> None:
-    fpath.parent.mkdir(exist_ok=True, parents=True)
-    with jsonlines.open(fpath, "a") as writer:
-        writer.write(data)
-
-
-def write_info(info: dict, local_dir: Path):
+def write_info(info: dict, local_dir: Path) -> None:
     write_json(info, local_dir / INFO_PATH)
 
 
@@ -180,65 +226,68 @@ def load_info(local_dir: Path) -> dict:
     return info
 
 
-def write_stats(stats: dict, local_dir: Path):
+def write_stats(stats: dict, local_dir: Path) -> None:
     serialized_stats = serialize_dict(stats)
     write_json(serialized_stats, local_dir / STATS_PATH)
 
 
-def cast_stats_to_numpy(stats) -> dict[str, dict[str, np.ndarray]]:
+def cast_stats_to_numpy(stats: dict) -> dict[str, dict[str, np.ndarray]]:
     stats = {key: np.array(value) for key, value in flatten_dict(stats).items()}
     return unflatten_dict(stats)
 
 
-def load_stats(local_dir: Path) -> dict[str, dict[str, np.ndarray]]:
+def load_stats(local_dir: Path) -> dict[str, dict[str, np.ndarray]] | None:
     if not (local_dir / STATS_PATH).exists():
         return None
     stats = load_json(local_dir / STATS_PATH)
     return cast_stats_to_numpy(stats)
 
 
-def write_task(task_index: int, task: dict, local_dir: Path):
-    task_dict = {
-        "task_index": task_index,
-        "task": task,
-    }
-    append_jsonlines(task_dict, local_dir / TASKS_PATH)
+def write_tasks(tasks: pandas.DataFrame, local_dir: Path) -> None:
+    path = local_dir / DEFAULT_TASKS_PATH
+    path.parent.mkdir(parents=True, exist_ok=True)
+    tasks.to_parquet(path)
 
 
-def load_tasks(local_dir: Path) -> tuple[dict, dict]:
-    tasks = load_jsonlines(local_dir / TASKS_PATH)
-    tasks = {item["task_index"]: item["task"] for item in sorted(tasks, key=lambda x: x["task_index"])}
-    task_to_task_index = {task: task_index for task_index, task in tasks.items()}
-    return tasks, task_to_task_index
+def load_tasks(local_dir: Path) -> pandas.DataFrame:
+    tasks = pd.read_parquet(local_dir / DEFAULT_TASKS_PATH)
+    return tasks
 
 
-def write_episode(episode: dict, local_dir: Path):
-    append_jsonlines(episode, local_dir / EPISODES_PATH)
+def write_episodes(episodes: Dataset, local_dir: Path) -> None:
+    """Write episode metadata to a parquet file in the LeRobot v3.0 format.
+    This function writes episode-level metadata to a single parquet file.
+    Used primarily during dataset conversion (v2.1 → v3.0) and in test fixtures.
+
+    Args:
+        episodes: HuggingFace Dataset containing episode metadata
+        local_dir: Root directory where the dataset will be stored
+    """
+    episode_size_mb = get_hf_dataset_size_in_mb(episodes)
+    if episode_size_mb > DEFAULT_DATA_FILE_SIZE_IN_MB:
+        raise NotImplementedError(
+            f"Episodes dataset is too large ({episode_size_mb} MB) to write to a single file. "
+            f"The current limit is {DEFAULT_DATA_FILE_SIZE_IN_MB} MB. "
+            "This function only supports single-file episode metadata. "
+        )
+
+    fpath = local_dir / DEFAULT_EPISODES_PATH.format(chunk_index=0, file_index=0)
+    fpath.parent.mkdir(parents=True, exist_ok=True)
+    episodes.to_parquet(fpath)
 
 
-def load_episodes(local_dir: Path) -> dict:
-    episodes = load_jsonlines(local_dir / EPISODES_PATH)
-    return {item["episode_index"]: item for item in sorted(episodes, key=lambda x: x["episode_index"])}
-
-
-def write_episode_stats(episode_index: int, episode_stats: dict, local_dir: Path):
-    # We wrap episode_stats in a dictionary since `episode_stats["episode_index"]`
-    # is a dictionary of stats and not an integer.
-    episode_stats = {"episode_index": episode_index, "stats": serialize_dict(episode_stats)}
-    append_jsonlines(episode_stats, local_dir / EPISODES_STATS_PATH)
-
-
-def load_episodes_stats(local_dir: Path) -> dict:
-    episodes_stats = load_jsonlines(local_dir / EPISODES_STATS_PATH)
-    return {
-        item["episode_index"]: cast_stats_to_numpy(item["stats"])
-        for item in sorted(episodes_stats, key=lambda x: x["episode_index"])
-    }
+def load_episodes(local_dir: Path) -> datasets.Dataset:
+    episodes = load_nested_dataset(local_dir / EPISODES_DIR)
+    # Select episode features/columns containing references to episode data and videos
+    # (e.g. tasks, dataset_from_index, dataset_to_index, data/chunk_index, data/file_index, etc.)
+    # This is to speedup access to these data, instead of having to load episode stats.
+    episodes = episodes.select_columns([key for key in episodes.features if not key.startswith("stats/")])
+    return episodes
 
 
 def backward_compatible_episodes_stats(
     stats: dict[str, dict[str, np.ndarray]], episodes: list[int]
-) -> dict[str, dict[str, np.ndarray]]:
+) -> dict[int, dict[str, dict[str, np.ndarray]]]:
     return dict.fromkeys(episodes, stats)
 
 
@@ -254,7 +303,7 @@ def load_image_as_numpy(
     return img_array
 
 
-def hf_transform_to_torch(items_dict: dict[torch.Tensor | None]):
+def hf_transform_to_torch(items_dict: dict[str, list[Any]]) -> dict[str, list[torch.Tensor | str]]:
     """Get a transform function that convert items from Hugging Face dataset (pyarrow)
     to torch tensors. Importantly, images are converted from PIL, which corresponds to
     a channel last representation (h w c) of uint8 type, to a torch image representation
@@ -299,7 +348,7 @@ def check_version_compatibility(
     if v_check.major < v_current.major and enforce_breaking_major:
         raise BackwardCompatibilityError(repo_id, v_check)
     elif v_check.minor < v_current.minor:
-        logging.warning(V21_MESSAGE.format(repo_id=repo_id, version=v_check))
+        logging.warning(FUTURE_MESSAGE.format(repo_id=repo_id, version=v_check))
 
 
 def get_repo_versions(repo_id: str) -> list[packaging.version.Version]:
@@ -476,6 +525,9 @@ def create_empty_dataset_info(
     features: dict,
     use_videos: bool,
     robot_type: str | None = None,
+    chunks_size: int | None = None,
+    data_files_size_in_mb: int | None = None,
+    video_files_size_in_mb: int | None = None,
 ) -> dict:
     return {
         "codebase_version": codebase_version,
@@ -483,104 +535,17 @@ def create_empty_dataset_info(
         "total_episodes": 0,
         "total_frames": 0,
         "total_tasks": 0,
-        "total_videos": 0,
-        "total_chunks": 0,
-        "chunks_size": DEFAULT_CHUNK_SIZE,
+        "chunks_size": chunks_size or DEFAULT_CHUNK_SIZE,
+        "data_files_size_in_mb": data_files_size_in_mb or DEFAULT_DATA_FILE_SIZE_IN_MB,
+        "video_files_size_in_mb": video_files_size_in_mb or DEFAULT_VIDEO_FILE_SIZE_IN_MB,
         "fps": fps,
         "splits": {},
-        "data_path": DEFAULT_PARQUET_PATH,
+        "data_path": DEFAULT_DATA_PATH,
         "video_path": DEFAULT_VIDEO_PATH if use_videos else None,
         "features": features,
     }
 
 
-def get_episode_data_index(
-    episode_dicts: dict[dict], episodes: list[int] | None = None
-) -> dict[str, torch.Tensor]:
-    episode_lengths = {ep_idx: ep_dict["length"] for ep_idx, ep_dict in episode_dicts.items()}
-    if episodes is not None:
-        episode_lengths = {ep_idx: episode_lengths[ep_idx] for ep_idx in episodes}
-
-    cumulative_lengths = list(accumulate(episode_lengths.values()))
-    return {
-        "from": torch.LongTensor([0] + cumulative_lengths[:-1]),
-        "to": torch.LongTensor(cumulative_lengths),
-    }
-
-
-def check_timestamps_sync(
-    timestamps: np.ndarray,
-    episode_indices: np.ndarray,
-    episode_data_index: dict[str, np.ndarray],
-    fps: int,
-    tolerance_s: float,
-    raise_value_error: bool = True,
-) -> bool:
-    """
-    This check is to make sure that each timestamp is separated from the next by (1/fps) +/- tolerance
-    to account for possible numerical error.
-
-    Args:
-        timestamps (np.ndarray): Array of timestamps in seconds.
-        episode_indices (np.ndarray): Array indicating the episode index for each timestamp.
-        episode_data_index (dict[str, np.ndarray]): A dictionary that includes 'to',
-            which identifies indices for the end of each episode.
-        fps (int): Frames per second. Used to check the expected difference between consecutive timestamps.
-        tolerance_s (float): Allowed deviation from the expected (1/fps) difference.
-        raise_value_error (bool): Whether to raise a ValueError if the check fails.
-
-    Returns:
-        bool: True if all checked timestamp differences lie within tolerance, False otherwise.
-
-    Raises:
-        ValueError: If the check fails and `raise_value_error` is True.
-    """
-    if timestamps.shape != episode_indices.shape:
-        raise ValueError(
-            "timestamps and episode_indices should have the same shape. "
-            f"Found {timestamps.shape=} and {episode_indices.shape=}."
-        )
-
-    # Consecutive differences
-    diffs = np.diff(timestamps)
-    within_tolerance = np.abs(diffs - (1.0 / fps)) <= tolerance_s
-
-    # Mask to ignore differences at the boundaries between episodes
-    mask = np.ones(len(diffs), dtype=bool)
-    ignored_diffs = episode_data_index["to"][:-1] - 1  # indices at the end of each episode
-    mask[ignored_diffs] = False
-    filtered_within_tolerance = within_tolerance[mask]
-
-    # Check if all remaining diffs are within tolerance
-    if not np.all(filtered_within_tolerance):
-        # Track original indices before masking
-        original_indices = np.arange(len(diffs))
-        filtered_indices = original_indices[mask]
-        outside_tolerance_filtered_indices = np.nonzero(~filtered_within_tolerance)[0]
-        outside_tolerance_indices = filtered_indices[outside_tolerance_filtered_indices]
-
-        outside_tolerances = []
-        for idx in outside_tolerance_indices:
-            entry = {
-                "timestamps": [timestamps[idx], timestamps[idx + 1]],
-                "diff": diffs[idx],
-                "episode_index": episode_indices[idx].item()
-                if hasattr(episode_indices[idx], "item")
-                else episode_indices[idx],
-            }
-            outside_tolerances.append(entry)
-
-        if raise_value_error:
-            raise ValueError(
-                f"""One or several timestamps unexpectedly violate the tolerance inside episode range.
-                This might be due to synchronization issues during data collection.
-                \n{pformat(outside_tolerances)}"""
-            )
-        return False
-
-    return True
-
-
 def check_delta_timestamps(
     delta_timestamps: dict[str, list[float]], fps: int, tolerance_s: float, raise_value_error: bool = True
 ) -> bool:
@@ -619,7 +584,7 @@ def get_delta_indices(delta_timestamps: dict[str, list[float]], fps: int) -> dic
     return delta_indices
 
 
-def cycle(iterable):
+def cycle(iterable: Any) -> Iterator[Any]:
     """The equivalent of itertools.cycle, but safe for Pytorch dataloaders.
 
     See https://github.com/pytorch/pytorch/issues/23900 for information on why itertools.cycle is not safe.
@@ -632,7 +597,7 @@ def cycle(iterable):
             iterator = iter(iterable)
 
 
-def create_branch(repo_id, *, branch: str, repo_type: str | None = None) -> None:
+def create_branch(repo_id: str, *, branch: str, repo_type: str | None = None) -> None:
     """Create a branch on a existing Hugging Face repo. Delete the branch if it already
     exists before creating it.
     """
@@ -685,76 +650,28 @@ def create_lerobot_dataset_card(
     )
 
 
-class IterableNamespace(SimpleNamespace):
-    """
-    A namespace object that supports both dictionary-like iteration and dot notation access.
-    Automatically converts nested dictionaries into IterableNamespaces.
-
-    This class extends SimpleNamespace to provide:
-    - Dictionary-style iteration over keys
-    - Access to items via both dot notation (obj.key) and brackets (obj["key"])
-    - Dictionary-like methods: items(), keys(), values()
-    - Recursive conversion of nested dictionaries
-
-    Args:
-        dictionary: Optional dictionary to initialize the namespace
-        **kwargs: Additional keyword arguments passed to SimpleNamespace
-
-    Examples:
-        >>> data = {"name": "Alice", "details": {"age": 25}}
-        >>> ns = IterableNamespace(data)
-        >>> ns.name
-        'Alice'
-        >>> ns.details.age
-        25
-        >>> list(ns.keys())
-        ['name', 'details']
-        >>> for key, value in ns.items():
-        ...     print(f"{key}: {value}")
-        name: Alice
-        details: IterableNamespace(age=25)
-    """
-
-    def __init__(self, dictionary: dict[str, Any] = None, **kwargs):
-        super().__init__(**kwargs)
-        if dictionary is not None:
-            for key, value in dictionary.items():
-                if isinstance(value, dict):
-                    setattr(self, key, IterableNamespace(value))
-                else:
-                    setattr(self, key, value)
-
-    def __iter__(self) -> Iterator[str]:
-        return iter(vars(self))
-
-    def __getitem__(self, key: str) -> Any:
-        return vars(self)[key]
-
-    def items(self):
-        return vars(self).items()
-
-    def values(self):
-        return vars(self).values()
-
-    def keys(self):
-        return vars(self).keys()
-
-
-def validate_frame(frame: dict, features: dict):
+def validate_frame(frame: dict, features: dict) -> None:
     expected_features = set(features) - set(DEFAULT_FEATURES)
     actual_features = set(frame)
 
-    error_message = validate_features_presence(actual_features, expected_features)
+    # task is a special required field that's not part of regular features
+    if "task" not in actual_features:
+        raise ValueError("Feature mismatch in `frame` dictionary:\nMissing features: {'task'}\n")
 
-    common_features = actual_features & expected_features
-    for name in common_features - {"task"}:
+    # Remove task from actual_features for regular feature validation
+    actual_features_for_validation = actual_features - {"task"}
+
+    error_message = validate_features_presence(actual_features_for_validation, expected_features)
+
+    common_features = actual_features_for_validation & expected_features
+    for name in common_features:
         error_message += validate_feature_dtype_and_shape(name, features[name], frame[name])
 
     if error_message:
         raise ValueError(error_message)
 
 
-def validate_features_presence(actual_features: set[str], expected_features: set[str]):
+def validate_features_presence(actual_features: set[str], expected_features: set[str]) -> str:
     error_message = ""
     missing_features = expected_features - actual_features
     extra_features = actual_features - expected_features
@@ -769,7 +686,9 @@ def validate_features_presence(actual_features: set[str], expected_features: set
     return error_message
 
 
-def validate_feature_dtype_and_shape(name: str, feature: dict, value: np.ndarray | PILImage.Image | str):
+def validate_feature_dtype_and_shape(
+    name: str, feature: dict, value: np.ndarray | PILImage.Image | str
+) -> str:
     expected_dtype = feature["dtype"]
     expected_shape = feature["shape"]
     if is_valid_numpy_dtype_string(expected_dtype):
@@ -784,7 +703,7 @@ def validate_feature_dtype_and_shape(name: str, feature: dict, value: np.ndarray
 
 def validate_feature_numpy_array(
     name: str, expected_dtype: str, expected_shape: list[int], value: np.ndarray
-):
+) -> str:
     error_message = ""
     if isinstance(value, np.ndarray):
         actual_dtype = value.dtype
@@ -801,7 +720,9 @@ def validate_feature_numpy_array(
     return error_message
 
 
-def validate_feature_image_or_video(name: str, expected_shape: list[str], value: np.ndarray | PILImage.Image):
+def validate_feature_image_or_video(
+    name: str, expected_shape: list[str], value: np.ndarray | PILImage.Image
+) -> str:
     # Note: The check of pixels range ([0,1] for float and [0,255] for uint8) is done by the image writer threads.
     error_message = ""
     if isinstance(value, np.ndarray):
@@ -817,13 +738,13 @@ def validate_feature_image_or_video(name: str, expected_shape: list[str], value:
     return error_message
 
 
-def validate_feature_string(name: str, value: str):
+def validate_feature_string(name: str, value: str) -> str:
     if not isinstance(value, str):
         return f"The feature '{name}' is expected to be of type 'str', but type '{type(value)}' provided instead.\n"
     return ""
 
 
-def validate_episode_buffer(episode_buffer: dict, total_episodes: int, features: dict):
+def validate_episode_buffer(episode_buffer: dict, total_episodes: int, features: dict) -> None:
     if "size" not in episode_buffer:
         raise ValueError("size key not found in episode_buffer")
 
@@ -847,3 +768,11 @@ def validate_episode_buffer(episode_buffer: dict, total_episodes: int, features:
             f"In episode_buffer not in features: {buffer_keys - set(features)}"
             f"In features not in episode_buffer: {set(features) - buffer_keys}"
         )
+
+
+def to_parquet_with_hf_images(df: pandas.DataFrame, path: Path) -> None:
+    """This function correctly writes to parquet a panda DataFrame that contains images encoded by HF dataset.
+    This way, it can be loaded by HF dataset and correctly formatted images are returned.
+    """
+    # TODO(qlhoest): replace this weird synthax by `df.to_parquet(path)` only
+    datasets.Dataset.from_dict(df.to_dict(orient="list")).to_parquet(path)

src/lerobot/datasets/v2/batch_convert_dataset_v1_to_v2.py

@@ -1,884 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-This script is for internal use to convert all datasets under the 'lerobot' hub user account to v2.
-
-Note: Since the original Aloha datasets don't use shadow motors, you need to comment those out in
-lerobot/configs/robot/aloha.yaml before running this script.
-"""
-
-import traceback
-from pathlib import Path
-from textwrap import dedent
-
-from lerobot import available_datasets
-from lerobot.datasets.v2.convert_dataset_v1_to_v2 import convert_dataset
-from lerobot.robots.aloha.configuration_aloha import AlohaRobotConfig
-
-LOCAL_DIR = Path("data/")
-
-# spellchecker:off
-ALOHA_MOBILE_INFO = {
-    "robot_config": AlohaRobotConfig(),
-    "license": "mit",
-    "url": "https://mobile-aloha.github.io/",
-    "paper": "https://huggingface.co/papers/2401.02117",
-    "citation_bibtex": dedent(r"""
-        @inproceedings{fu2024mobile,
-            author    = {Fu, Zipeng and Zhao, Tony Z. and Finn, Chelsea},
-            title     = {Mobile ALOHA: Learning Bimanual Mobile Manipulation with Low-Cost Whole-Body Teleoperation},
-            booktitle = {arXiv},
-            year      = {2024},
-        }""").lstrip(),
-}
-ALOHA_STATIC_INFO = {
-    "robot_config": AlohaRobotConfig(),
-    "license": "mit",
-    "url": "https://tonyzhaozh.github.io/aloha/",
-    "paper": "https://huggingface.co/papers/2304.13705",
-    "citation_bibtex": dedent(r"""
-        @article{Zhao2023LearningFB,
-            title={Learning Fine-Grained Bimanual Manipulation with Low-Cost Hardware},
-            author={Tony Zhao and Vikash Kumar and Sergey Levine and Chelsea Finn},
-            journal={RSS},
-            year={2023},
-            volume={abs/2304.13705},
-            url={https://huggingface.co/papers/2304.13705}
-        }""").lstrip(),
-}
-PUSHT_INFO = {
-    "license": "mit",
-    "url": "https://diffusion-policy.cs.columbia.edu/",
-    "paper": "https://huggingface.co/papers/2303.04137",
-    "citation_bibtex": dedent(r"""
-        @article{chi2024diffusionpolicy,
-            author = {Cheng Chi and Zhenjia Xu and Siyuan Feng and Eric Cousineau and Yilun Du and Benjamin Burchfiel and Russ Tedrake and Shuran Song},
-            title ={Diffusion Policy: Visuomotor Policy Learning via Action Diffusion},
-            journal = {The International Journal of Robotics Research},
-            year = {2024},
-        }""").lstrip(),
-}
-XARM_INFO = {
-    "license": "mit",
-    "url": "https://www.nicklashansen.com/td-mpc/",
-    "paper": "https://huggingface.co/papers/2203.04955",
-    "citation_bibtex": dedent(r"""
-        @inproceedings{Hansen2022tdmpc,
-            title={Temporal Difference Learning for Model Predictive Control},
-            author={Nicklas Hansen and Xiaolong Wang and Hao Su},
-            booktitle={ICML},
-            year={2022}
-        }
-    """),
-}
-UNITREEH_INFO = {
-    "license": "apache-2.0",
-}
-
-DATASETS = {
-    "aloha_mobile_cabinet": {
-        "single_task": "Open the top cabinet, store the pot inside it then close the cabinet.",
-        **ALOHA_MOBILE_INFO,
-    },
-    "aloha_mobile_chair": {
-        "single_task": "Push the chairs in front of the desk to place them against it.",
-        **ALOHA_MOBILE_INFO,
-    },
-    "aloha_mobile_elevator": {
-        "single_task": "Take the elevator to the 1st floor.",
-        **ALOHA_MOBILE_INFO,
-    },
-    "aloha_mobile_shrimp": {
-        "single_task": "Sauté the raw shrimp on both sides, then serve it in the bowl.",
-        **ALOHA_MOBILE_INFO,
-    },
-    "aloha_mobile_wash_pan": {
-        "single_task": "Pick up the pan, rinse it in the sink and then place it in the drying rack.",
-        **ALOHA_MOBILE_INFO,
-    },
-    "aloha_mobile_wipe_wine": {
-        "single_task": "Pick up the wet cloth on the faucet and use it to clean the spilled wine on the table and underneath the glass.",
-        **ALOHA_MOBILE_INFO,
-    },
-    "aloha_static_battery": {
-        "single_task": "Place the battery into the slot of the remote controller.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_candy": {"single_task": "Pick up the candy and unwrap it.", **ALOHA_STATIC_INFO},
-    "aloha_static_coffee": {
-        "single_task": "Place the coffee capsule inside the capsule container, then place the cup onto the center of the cup tray, then push the 'Hot Water' and 'Travel Mug' buttons.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_coffee_new": {
-        "single_task": "Place the coffee capsule inside the capsule container, then place the cup onto the center of the cup tray.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_cups_open": {
-        "single_task": "Pick up the plastic cup and open its lid.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_fork_pick_up": {
-        "single_task": "Pick up the fork and place it on the plate.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_pingpong_test": {
-        "single_task": "Transfer one of the two balls in the right glass into the left glass, then transfer it back to the right glass.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_pro_pencil": {
-        "single_task": "Pick up the pencil with the right arm, hand it over to the left arm then place it back onto the table.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_screw_driver": {
-        "single_task": "Pick up the screwdriver with the right arm, hand it over to the left arm then place it into the cup.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_tape": {
-        "single_task": "Cut a small piece of tape from the tape dispenser then place it on the cardboard box's edge.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_thread_velcro": {
-        "single_task": "Pick up the velcro cable tie with the left arm, then insert the end of the velcro tie into the other end's loop with the right arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_towel": {
-        "single_task": "Pick up a piece of paper towel and place it on the spilled liquid.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_vinh_cup": {
-        "single_task": "Pick up the plastic cup with the right arm, then pop its lid open with the left arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_vinh_cup_left": {
-        "single_task": "Pick up the plastic cup with the left arm, then pop its lid open with the right arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_static_ziploc_slide": {"single_task": "Slide open the ziploc bag.", **ALOHA_STATIC_INFO},
-    "aloha_sim_insertion_scripted": {"single_task": "Insert the peg into the socket.", **ALOHA_STATIC_INFO},
-    "aloha_sim_insertion_scripted_image": {
-        "single_task": "Insert the peg into the socket.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_sim_insertion_human": {"single_task": "Insert the peg into the socket.", **ALOHA_STATIC_INFO},
-    "aloha_sim_insertion_human_image": {
-        "single_task": "Insert the peg into the socket.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_sim_transfer_cube_scripted": {
-        "single_task": "Pick up the cube with the right arm and transfer it to the left arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_sim_transfer_cube_scripted_image": {
-        "single_task": "Pick up the cube with the right arm and transfer it to the left arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_sim_transfer_cube_human": {
-        "single_task": "Pick up the cube with the right arm and transfer it to the left arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "aloha_sim_transfer_cube_human_image": {
-        "single_task": "Pick up the cube with the right arm and transfer it to the left arm.",
-        **ALOHA_STATIC_INFO,
-    },
-    "pusht": {"single_task": "Push the T-shaped block onto the T-shaped target.", **PUSHT_INFO},
-    "pusht_image": {"single_task": "Push the T-shaped block onto the T-shaped target.", **PUSHT_INFO},
-    "unitreeh1_fold_clothes": {"single_task": "Fold the sweatshirt.", **UNITREEH_INFO},
-    "unitreeh1_rearrange_objects": {"single_task": "Put the object into the bin.", **UNITREEH_INFO},
-    "unitreeh1_two_robot_greeting": {
-        "single_task": "Greet the other robot with a high five.",
-        **UNITREEH_INFO,
-    },
-    "unitreeh1_warehouse": {
-        "single_task": "Grab the spray paint on the shelf and place it in the bin on top of the robot dog.",
-        **UNITREEH_INFO,
-    },
-    "xarm_lift_medium": {"single_task": "Pick up the cube and lift it.", **XARM_INFO},
-    "xarm_lift_medium_image": {"single_task": "Pick up the cube and lift it.", **XARM_INFO},
-    "xarm_lift_medium_replay": {"single_task": "Pick up the cube and lift it.", **XARM_INFO},
-    "xarm_lift_medium_replay_image": {"single_task": "Pick up the cube and lift it.", **XARM_INFO},
-    "xarm_push_medium": {"single_task": "Push the cube onto the target.", **XARM_INFO},
-    "xarm_push_medium_image": {"single_task": "Push the cube onto the target.", **XARM_INFO},
-    "xarm_push_medium_replay": {"single_task": "Push the cube onto the target.", **XARM_INFO},
-    "xarm_push_medium_replay_image": {"single_task": "Push the cube onto the target.", **XARM_INFO},
-    "umi_cup_in_the_wild": {
-        "single_task": "Put the cup on the plate.",
-        "license": "apache-2.0",
-    },
-    "asu_table_top": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://link.springer.com/article/10.1007/s10514-023-10129-1",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{zhou2023modularity,
-                title={Modularity through Attention: Efficient Training and Transfer of Language-Conditioned Policies for Robot Manipulation},
-                author={Zhou, Yifan and Sonawani, Shubham and Phielipp, Mariano and Stepputtis, Simon and Amor, Heni},
-                booktitle={Conference on Robot Learning},
-                pages={1684--1695},
-                year={2023},
-                organization={PMLR}
-            }
-            @article{zhou2023learning,
-                title={Learning modular language-conditioned robot policies through attention},
-                author={Zhou, Yifan and Sonawani, Shubham and Phielipp, Mariano and Ben Amor, Heni and Stepputtis, Simon},
-                journal={Autonomous Robots},
-                pages={1--21},
-                year={2023},
-                publisher={Springer}
-            }""").lstrip(),
-    },
-    "austin_buds_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://ut-austin-rpl.github.io/BUDS-website/",
-        "paper": "https://huggingface.co/papers/2109.13841",
-        "citation_bibtex": dedent(r"""
-            @article{zhu2022bottom,
-                title={Bottom-Up Skill Discovery From Unsegmented Demonstrations for Long-Horizon Robot Manipulation},
-                author={Zhu, Yifeng and Stone, Peter and Zhu, Yuke},
-                journal={IEEE Robotics and Automation Letters},
-                volume={7},
-                number={2},
-                pages={4126--4133},
-                year={2022},
-                publisher={IEEE}
-            }""").lstrip(),
-    },
-    "austin_sailor_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://ut-austin-rpl.github.io/sailor/",
-        "paper": "https://huggingface.co/papers/2210.11435",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{nasiriany2022sailor,
-                title={Learning and Retrieval from Prior Data for Skill-based Imitation Learning},
-                author={Soroush Nasiriany and Tian Gao and Ajay Mandlekar and Yuke Zhu},
-                booktitle={Conference on Robot Learning (CoRL)},
-                year={2022}
-            }""").lstrip(),
-    },
-    "austin_sirius_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://ut-austin-rpl.github.io/sirius/",
-        "paper": "https://huggingface.co/papers/2211.08416",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{liu2022robot,
-                title = {Robot Learning on the Job: Human-in-the-Loop Autonomy and Learning During Deployment},
-                author = {Huihan Liu and Soroush Nasiriany and Lance Zhang and Zhiyao Bao and Yuke Zhu},
-                booktitle = {Robotics: Science and Systems (RSS)},
-                year = {2023}
-            }""").lstrip(),
-    },
-    "berkeley_autolab_ur5": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "url": "https://sites.google.com/view/berkeley-ur5/home",
-        "citation_bibtex": dedent(r"""
-            @misc{BerkeleyUR5Website,
-                title = {Berkeley {UR5} Demonstration Dataset},
-                author = {Lawrence Yunliang Chen and Simeon Adebola and Ken Goldberg},
-                howpublished = {https://sites.google.com/view/berkeley-ur5/home},
-            }""").lstrip(),
-    },
-    "berkeley_cable_routing": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "url": "https://sites.google.com/view/cablerouting/home",
-        "paper": "https://huggingface.co/papers/2307.08927",
-        "citation_bibtex": dedent(r"""
-            @article{luo2023multistage,
-                author    = {Jianlan Luo and Charles Xu and Xinyang Geng and Gilbert Feng and Kuan Fang and Liam Tan and Stefan Schaal and Sergey Levine},
-                title     = {Multi-Stage Cable Routing through Hierarchical Imitation Learning},
-                journal   = {arXiv pre-print},
-                year      = {2023},
-                url       = {https://huggingface.co/papers/2307.08927},
-            }""").lstrip(),
-    },
-    "berkeley_fanuc_manipulation": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://sites.google.com/berkeley.edu/fanuc-manipulation",
-        "citation_bibtex": dedent(r"""
-            @article{fanuc_manipulation2023,
-                title={Fanuc Manipulation: A Dataset for Learning-based Manipulation with FANUC Mate 200iD Robot},
-                author={Zhu, Xinghao and Tian, Ran and Xu, Chenfeng and Ding, Mingyu and Zhan, Wei and Tomizuka, Masayoshi},
-                year={2023},
-            }""").lstrip(),
-    },
-    "berkeley_gnm_cory_hall": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://huggingface.co/papers/1709.10489",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{kahn2018self,
-                title={Self-supervised deep reinforcement learning with generalized computation graphs for robot navigation},
-                author={Kahn, Gregory and Villaflor, Adam and Ding, Bosen and Abbeel, Pieter and Levine, Sergey},
-                booktitle={2018 IEEE international conference on robotics and automation (ICRA)},
-                pages={5129--5136},
-                year={2018},
-                organization={IEEE}
-            }""").lstrip(),
-    },
-    "berkeley_gnm_recon": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://sites.google.com/view/recon-robot",
-        "paper": "https://huggingface.co/papers/2104.05859",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{shah2021rapid,
-                title={Rapid Exploration for Open-World Navigation with Latent Goal Models},
-                author={Dhruv Shah and Benjamin Eysenbach and Nicholas Rhinehart and Sergey Levine},
-                booktitle={5th Annual Conference on Robot Learning },
-                year={2021},
-                url={https://openreview.net/forum?id=d_SWJhyKfVw}
-            }""").lstrip(),
-    },
-    "berkeley_gnm_sac_son": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://sites.google.com/view/SACSoN-review",
-        "paper": "https://huggingface.co/papers/2306.01874",
-        "citation_bibtex": dedent(r"""
-            @article{hirose2023sacson,
-                title={SACSoN: Scalable Autonomous Data Collection for Social Navigation},
-                author={Hirose, Noriaki and Shah, Dhruv and Sridhar, Ajay and Levine, Sergey},
-                journal={arXiv preprint arXiv:2306.01874},
-                year={2023}
-            }""").lstrip(),
-    },
-    "berkeley_mvp": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://huggingface.co/papers/2203.06173",
-        "citation_bibtex": dedent(r"""
-            @InProceedings{Radosavovic2022,
-                title = {Real-World Robot Learning with Masked Visual Pre-training},
-                author = {Ilija Radosavovic and Tete Xiao and Stephen James and Pieter Abbeel and Jitendra Malik and Trevor Darrell},
-                booktitle = {CoRL},
-                year = {2022}
-            }""").lstrip(),
-    },
-    "berkeley_rpt": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://huggingface.co/papers/2306.10007",
-        "citation_bibtex": dedent(r"""
-            @article{Radosavovic2023,
-                title={Robot Learning with Sensorimotor Pre-training},
-                author={Ilija Radosavovic and Baifeng Shi and Letian Fu and Ken Goldberg and Trevor Darrell and Jitendra Malik},
-                year={2023},
-                journal={arXiv:2306.10007}
-            }""").lstrip(),
-    },
-    "cmu_franka_exploration_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://human-world-model.github.io/",
-        "paper": "https://huggingface.co/papers/2308.10901",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{mendonca2023structured,
-                title={Structured World Models from Human Videos},
-                author={Mendonca, Russell  and Bahl, Shikhar and Pathak, Deepak},
-                journal={RSS},
-                year={2023}
-            }""").lstrip(),
-    },
-    "cmu_play_fusion": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://play-fusion.github.io/",
-        "paper": "https://huggingface.co/papers/2312.04549",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{chen2023playfusion,
-                title={PlayFusion: Skill Acquisition via Diffusion from Language-Annotated Play},
-                author={Chen, Lili and Bahl, Shikhar and Pathak, Deepak},
-                booktitle={CoRL},
-                year={2023}
-            }""").lstrip(),
-    },
-    "cmu_stretch": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://robo-affordances.github.io/",
-        "paper": "https://huggingface.co/papers/2304.08488",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{bahl2023affordances,
-                title={Affordances from Human Videos as a Versatile Representation for Robotics},
-                author={Bahl, Shikhar and Mendonca, Russell and Chen, Lili and Jain, Unnat and Pathak, Deepak},
-                booktitle={CVPR},
-                year={2023}
-            }
-                @article{mendonca2023structured,
-                title={Structured World Models from Human Videos},
-                author={Mendonca, Russell and Bahl, Shikhar and Pathak, Deepak},
-                journal={CoRL},
-                year={2023}
-            }""").lstrip(),
-    },
-    "columbia_cairlab_pusht_real": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://diffusion-policy.cs.columbia.edu/",
-        "paper": "https://huggingface.co/papers/2303.04137",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{chi2023diffusionpolicy,
-                title={Diffusion Policy: Visuomotor Policy Learning via Action Diffusion},
-                author={Chi, Cheng and Feng, Siyuan and Du, Yilun and Xu, Zhenjia and Cousineau, Eric and Burchfiel, Benjamin and Song, Shuran},
-                booktitle={Proceedings of Robotics: Science and Systems (RSS)},
-                year={2023}
-            }""").lstrip(),
-    },
-    "conq_hose_manipulation": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://sites.google.com/view/conq-hose-manipulation-dataset/home",
-        "citation_bibtex": dedent(r"""
-            @misc{ConqHoseManipData,
-                author={Peter Mitrano and Dmitry Berenson},
-                title={Conq Hose Manipulation Dataset, v1.15.0},
-                year={2024},
-                howpublished={https://sites.google.com/view/conq-hose-manipulation-dataset}
-            }""").lstrip(),
-    },
-    "dlr_edan_shared_control": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://ieeexplore.ieee.org/document/9341156",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{vogel_edan_2020,
-                title = {EDAN - an EMG-Controlled Daily Assistant to Help People with Physical Disabilities},
-                language = {en},
-                booktitle = {2020 {IEEE}/{RSJ} {International} {Conference} on {Intelligent} {Robots} and {Systems} ({IROS})},
-                author = {Vogel, Jörn and Hagengruber, Annette and Iskandar, Maged and Quere, Gabriel and Leipscher, Ulrike and Bustamante, Samuel and Dietrich, Alexander and Hoeppner, Hannes and Leidner, Daniel and Albu-Schäffer, Alin},
-                year = {2020}
-            }
-            @inproceedings{quere_shared_2020,
-                address = {Paris, France},
-                title = {Shared {Control} {Templates} for {Assistive} {Robotics}},
-                language = {en},
-                booktitle = {2020 {IEEE} {International} {Conference} on {Robotics} and {Automation} ({ICRA})},
-                author = {Quere, Gabriel and Hagengruber, Annette and Iskandar, Maged and Bustamante, Samuel and Leidner, Daniel and Stulp, Freek and Vogel, Joern},
-                year = {2020},
-                pages = {7},
-            }""").lstrip(),
-    },
-    "dlr_sara_grid_clamp": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://www.researchsquare.com/article/rs-3289569/v1",
-        "citation_bibtex": dedent(r"""
-            @article{padalkar2023guided,
-                title={A guided reinforcement learning approach using shared control templates for learning manipulation skills in the real world},
-                author={Padalkar, Abhishek and Quere, Gabriel and Raffin, Antonin and Silv{\'e}rio, Jo{\~a}o and Stulp, Freek},
-                journal={Research square preprint rs-3289569/v1},
-                year={2023}
-            }""").lstrip(),
-    },
-    "dlr_sara_pour": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "paper": "https://elib.dlr.de/193739/1/padalkar2023rlsct.pdf",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{padalkar2023guiding,
-                title={Guiding Reinforcement Learning with Shared Control Templates},
-                author={Padalkar, Abhishek and Quere, Gabriel and Steinmetz, Franz and Raffin, Antonin and Nieuwenhuisen, Matthias and Silv{\'e}rio, Jo{\~a}o and Stulp, Freek},
-                booktitle={40th IEEE International Conference on Robotics and Automation, ICRA 2023},
-                year={2023},
-                organization={IEEE}
-            }""").lstrip(),
-    },
-    "droid_100": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://droid-dataset.github.io/",
-        "paper": "https://huggingface.co/papers/2403.12945",
-        "citation_bibtex": dedent(r"""
-            @article{khazatsky2024droid,
-                title   = {DROID: A Large-Scale In-The-Wild Robot Manipulation Dataset},
-                author  = {Alexander Khazatsky and Karl Pertsch and Suraj Nair and Ashwin Balakrishna and Sudeep Dasari and Siddharth Karamcheti and Soroush Nasiriany and Mohan Kumar Srirama and Lawrence Yunliang Chen and Kirsty Ellis and Peter David Fagan and Joey Hejna and Masha Itkina and Marion Lepert and Yecheng Jason Ma and Patrick Tree Miller and Jimmy Wu and Suneel Belkhale and Shivin Dass and Huy Ha and Arhan Jain and Abraham Lee and Youngwoon Lee and Marius Memmel and Sungjae Park and Ilija Radosavovic and Kaiyuan Wang and Albert Zhan and Kevin Black and Cheng Chi and Kyle Beltran Hatch and Shan Lin and Jingpei Lu and Jean Mercat and Abdul Rehman and Pannag R Sanketi and Archit Sharma and Cody Simpson and Quan Vuong and Homer Rich Walke and Blake Wulfe and Ted Xiao and Jonathan Heewon Yang and Arefeh Yavary and Tony Z. Zhao and Christopher Agia and Rohan Baijal and Mateo Guaman Castro and Daphne Chen and Qiuyu Chen and Trinity Chung and Jaimyn Drake and Ethan Paul Foster and Jensen Gao and David Antonio Herrera and Minho Heo and Kyle Hsu and Jiaheng Hu and Donovon Jackson and Charlotte Le and Yunshuang Li and Kevin Lin and Roy Lin and Zehan Ma and Abhiram Maddukuri and Suvir Mirchandani and Daniel Morton and Tony Nguyen and Abigail O'Neill and Rosario Scalise and Derick Seale and Victor Son and Stephen Tian and Emi Tran and Andrew E. Wang and Yilin Wu and Annie Xie and Jingyun Yang and Patrick Yin and Yunchu Zhang and Osbert Bastani and Glen Berseth and Jeannette Bohg and Ken Goldberg and Abhinav Gupta and Abhishek Gupta and Dinesh Jayaraman and Joseph J Lim and Jitendra Malik and Roberto Martín-Martín and Subramanian Ramamoorthy and Dorsa Sadigh and Shuran Song and Jiajun Wu and Michael C. Yip and Yuke Zhu and Thomas Kollar and Sergey Levine and Chelsea Finn},
-                year    = {2024},
-            }""").lstrip(),
-    },
-    "fmb": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "url": "https://functional-manipulation-benchmark.github.io/",
-        "paper": "https://huggingface.co/papers/2401.08553",
-        "citation_bibtex": dedent(r"""
-            @article{luo2024fmb,
-                title={FMB: a Functional Manipulation Benchmark for Generalizable Robotic Learning},
-                author={Luo, Jianlan and Xu, Charles and Liu, Fangchen and Tan, Liam and Lin, Zipeng and Wu, Jeffrey and Abbeel, Pieter and Levine, Sergey},
-                journal={arXiv preprint arXiv:2401.08553},
-                year={2024}
-            }""").lstrip(),
-    },
-    "iamlab_cmu_pickup_insert": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://openreview.net/forum?id=WuBv9-IGDUA",
-        "paper": "https://huggingface.co/papers/2401.14502",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{saxena2023multiresolution,
-                title={Multi-Resolution Sensing for Real-Time Control with Vision-Language Models},
-                author={Saumya Saxena and Mohit Sharma and Oliver Kroemer},
-                booktitle={7th Annual Conference on Robot Learning},
-                year={2023},
-                url={https://openreview.net/forum?id=WuBv9-IGDUA}
-            }""").lstrip(),
-    },
-    "imperialcollege_sawyer_wrist_cam": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-    },
-    "jaco_play": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "url": "https://github.com/clvrai/clvr_jaco_play_dataset",
-        "citation_bibtex": dedent(r"""
-            @software{dass2023jacoplay,
-                author = {Dass, Shivin and Yapeter, Jullian and Zhang, Jesse and Zhang, Jiahui
-                            and Pertsch, Karl and Nikolaidis, Stefanos and Lim, Joseph J.},
-                title = {CLVR Jaco Play Dataset},
-                url = {https://github.com/clvrai/clvr_jaco_play_dataset},
-                version = {1.0.0},
-                year = {2023}
-            }""").lstrip(),
-    },
-    "kaist_nonprehensile": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "url": "https://github.com/JaeHyung-Kim/rlds_dataset_builder",
-        "citation_bibtex": dedent(r"""
-            @article{kimpre,
-                title={Pre-and post-contact policy decomposition for non-prehensile manipulation with zero-shot sim-to-real transfer},
-                author={Kim, Minchan and Han, Junhyek and Kim, Jaehyung and Kim, Beomjoon},
-                booktitle={2023 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
-                year={2023},
-                organization={IEEE}
-            }""").lstrip(),
-    },
-    "nyu_door_opening_surprising_effectiveness": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://jyopari.github.io/VINN/",
-        "paper": "https://huggingface.co/papers/2112.01511",
-        "citation_bibtex": dedent(r"""
-            @misc{pari2021surprising,
-                title={The Surprising Effectiveness of Representation Learning for Visual Imitation},
-                author={Jyothish Pari and Nur Muhammad Shafiullah and Sridhar Pandian Arunachalam and Lerrel Pinto},
-                year={2021},
-                eprint={2112.01511},
-                archivePrefix={arXiv},
-                primaryClass={cs.RO}
-            }""").lstrip(),
-    },
-    "nyu_franka_play_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://play-to-policy.github.io/",
-        "paper": "https://huggingface.co/papers/2210.10047",
-        "citation_bibtex": dedent(r"""
-            @article{cui2022play,
-                title   = {From Play to Policy: Conditional Behavior Generation from Uncurated Robot Data},
-                author  = {Cui, Zichen Jeff and Wang, Yibin and Shafiullah, Nur Muhammad Mahi and Pinto, Lerrel},
-                journal = {arXiv preprint arXiv:2210.10047},
-                year    = {2022}
-            }""").lstrip(),
-    },
-    "nyu_rot_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://rot-robot.github.io/",
-        "paper": "https://huggingface.co/papers/2206.15469",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{haldar2023watch,
-                title={Watch and match: Supercharging imitation with regularized optimal transport},
-                author={Haldar, Siddhant and Mathur, Vaibhav and Yarats, Denis and Pinto, Lerrel},
-                booktitle={Conference on Robot Learning},
-                pages={32--43},
-                year={2023},
-                organization={PMLR}
-            }""").lstrip(),
-    },
-    "roboturk": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://roboturk.stanford.edu/dataset_real.html",
-        "paper": "PAPER",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{mandlekar2019scaling,
-                title={Scaling robot supervision to hundreds of hours with roboturk: Robotic manipulation dataset through human reasoning and dexterity},
-                author={Mandlekar, Ajay and Booher, Jonathan and Spero, Max and Tung, Albert and Gupta, Anchit and Zhu, Yuke and Garg, Animesh and Savarese, Silvio and Fei-Fei, Li},
-                booktitle={2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
-                pages={1048--1055},
-                year={2019},
-                organization={IEEE}
-            }""").lstrip(),
-    },
-    "stanford_hydra_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://sites.google.com/view/hydra-il-2023",
-        "paper": "https://huggingface.co/papers/2306.17237",
-        "citation_bibtex": dedent(r"""
-            @article{belkhale2023hydra,
-                title={HYDRA: Hybrid Robot Actions for Imitation Learning},
-                author={Belkhale, Suneel and Cui, Yuchen and Sadigh, Dorsa},
-                journal={arxiv},
-                year={2023}
-            }""").lstrip(),
-    },
-    "stanford_kuka_multimodal_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://sites.google.com/view/visionandtouch",
-        "paper": "https://huggingface.co/papers/1810.10191",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{lee2019icra,
-                title={Making sense of vision and touch: Self-supervised learning of multimodal representations for contact-rich tasks},
-                author={Lee, Michelle A and Zhu, Yuke and Srinivasan, Krishnan and Shah, Parth and Savarese, Silvio and Fei-Fei, Li and  Garg, Animesh and Bohg, Jeannette},
-                booktitle={2019 IEEE International Conference on Robotics and Automation (ICRA)},
-                year={2019},
-                url={https://huggingface.co/papers/1810.10191}
-            }""").lstrip(),
-    },
-    "stanford_robocook": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://hshi74.github.io/robocook/",
-        "paper": "https://huggingface.co/papers/2306.14447",
-        "citation_bibtex": dedent(r"""
-            @article{shi2023robocook,
-                title={RoboCook: Long-Horizon Elasto-Plastic Object Manipulation with Diverse Tools},
-                author={Shi, Haochen and Xu, Huazhe and Clarke, Samuel and Li, Yunzhu and Wu, Jiajun},
-                journal={arXiv preprint arXiv:2306.14447},
-                year={2023}
-            }""").lstrip(),
-    },
-    "taco_play": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "url": "https://www.kaggle.com/datasets/oiermees/taco-robot",
-        "paper": "https://huggingface.co/papers/2209.08959, https://huggingface.co/papers/2210.01911",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{rosete2022tacorl,
-                author = {Erick Rosete-Beas and Oier Mees and Gabriel Kalweit and Joschka Boedecker and Wolfram Burgard},
-                title = {Latent Plans for Task Agnostic Offline Reinforcement Learning},
-                journal = {Proceedings of the 6th Conference on Robot Learning (CoRL)},
-                year = {2022}
-            }
-            @inproceedings{mees23hulc2,
-                title={Grounding  Language  with  Visual  Affordances  over  Unstructured  Data},
-                author={Oier Mees and Jessica Borja-Diaz and Wolfram Burgard},
-                booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation (ICRA)},
-                year={2023},
-                address = {London, UK}
-            }""").lstrip(),
-    },
-    "tokyo_u_lsmo": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "URL",
-        "paper": "https://huggingface.co/papers/2107.05842",
-        "citation_bibtex": dedent(r"""
-            @Article{Osa22,
-                author  = {Takayuki Osa},
-                journal = {The International Journal of Robotics Research},
-                title   = {Motion Planning by Learning the Solution Manifold in Trajectory Optimization},
-                year    = {2022},
-                number  = {3},
-                pages   = {291--311},
-                volume  = {41},
-            }""").lstrip(),
-    },
-    "toto": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://toto-benchmark.org/",
-        "paper": "https://huggingface.co/papers/2306.00942",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{zhou2023train,
-                author={Zhou, Gaoyue and Dean, Victoria and Srirama, Mohan Kumar and Rajeswaran, Aravind and Pari, Jyothish and Hatch, Kyle and Jain, Aryan and Yu, Tianhe and Abbeel, Pieter and Pinto, Lerrel and Finn, Chelsea and Gupta, Abhinav},
-                booktitle={2023 IEEE International Conference on Robotics and Automation (ICRA)},
-                title={Train Offline, Test Online: A Real Robot Learning Benchmark},
-                year={2023},
-            }""").lstrip(),
-    },
-    "ucsd_kitchen_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "citation_bibtex": dedent(r"""
-            @ARTICLE{ucsd_kitchens,
-                author = {Ge Yan, Kris Wu, and Xiaolong Wang},
-                title = {{ucsd kitchens Dataset}},
-                year = {2023},
-                month = {August}
-            }""").lstrip(),
-    },
-    "ucsd_pick_and_place_dataset": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://owmcorl.github.io/#",
-        "paper": "https://huggingface.co/papers/2310.16029",
-        "citation_bibtex": dedent(r"""
-            @preprint{Feng2023Finetuning,
-                title={Finetuning Offline World Models in the Real World},
-                author={Yunhai Feng, Nicklas Hansen, Ziyan Xiong, Chandramouli Rajagopalan, Xiaolong Wang},
-                year={2023}
-            }""").lstrip(),
-    },
-    "uiuc_d3field": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://robopil.github.io/d3fields/",
-        "paper": "https://huggingface.co/papers/2309.16118",
-        "citation_bibtex": dedent(r"""
-            @article{wang2023d3field,
-                title={D^3Field: Dynamic 3D Descriptor Fields for Generalizable Robotic Manipulation},
-                author={Wang, Yixuan and Li, Zhuoran and Zhang, Mingtong and Driggs-Campbell, Katherine and Wu, Jiajun and Fei-Fei, Li and Li, Yunzhu},
-                journal={arXiv preprint arXiv:},
-                year={2023},
-            }""").lstrip(),
-    },
-    "usc_cloth_sim": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://uscresl.github.io/dmfd/",
-        "paper": "https://huggingface.co/papers/2207.10148",
-        "citation_bibtex": dedent(r"""
-            @article{salhotra2022dmfd,
-                author={Salhotra, Gautam and Liu, I-Chun Arthur and Dominguez-Kuhne, Marcus and Sukhatme, Gaurav S.},
-                journal={IEEE Robotics and Automation Letters},
-                title={Learning Deformable Object Manipulation From Expert Demonstrations},
-                year={2022},
-                volume={7},
-                number={4},
-                pages={8775-8782},
-                doi={10.1109/LRA.2022.3187843}
-            }""").lstrip(),
-    },
-    "utaustin_mutex": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://ut-austin-rpl.github.io/MUTEX/",
-        "paper": "https://huggingface.co/papers/2309.14320",
-        "citation_bibtex": dedent(r"""
-            @inproceedings{shah2023mutex,
-                title={{MUTEX}: Learning Unified Policies from Multimodal Task Specifications},
-                author={Rutav Shah and Roberto Mart{\'\i}n-Mart{\'\i}n and Yuke Zhu},
-                booktitle={7th Annual Conference on Robot Learning},
-                year={2023},
-                url={https://openreview.net/forum?id=PwqiqaaEzJ}
-            }""").lstrip(),
-    },
-    "utokyo_pr2_opening_fridge": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "citation_bibtex": dedent(r"""
-            @misc{oh2023pr2utokyodatasets,
-                author={Jihoon Oh and Naoaki Kanazawa and Kento Kawaharazuka},
-                title={X-Embodiment U-Tokyo PR2 Datasets},
-                year={2023},
-                url={https://github.com/ojh6404/rlds_dataset_builder},
-            }""").lstrip(),
-    },
-    "utokyo_pr2_tabletop_manipulation": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "citation_bibtex": dedent(r"""
-            @misc{oh2023pr2utokyodatasets,
-                author={Jihoon Oh and Naoaki Kanazawa and Kento Kawaharazuka},
-                title={X-Embodiment U-Tokyo PR2 Datasets},
-                year={2023},
-                url={https://github.com/ojh6404/rlds_dataset_builder},
-            }""").lstrip(),
-    },
-    "utokyo_saytap": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://saytap.github.io/",
-        "paper": "https://huggingface.co/papers/2306.07580",
-        "citation_bibtex": dedent(r"""
-            @article{saytap2023,
-                author = {Yujin Tang and Wenhao Yu and Jie Tan and Heiga Zen and Aleksandra Faust and
-                Tatsuya Harada},
-                title  = {SayTap: Language to Quadrupedal Locomotion},
-                eprint = {arXiv:2306.07580},
-                url    = {https://saytap.github.io},
-                note   = {https://saytap.github.io},
-                year   = {2023}
-            }""").lstrip(),
-    },
-    "utokyo_xarm_bimanual": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "citation_bibtex": dedent(r"""
-            @misc{matsushima2023weblab,
-                title={Weblab xArm Dataset},
-                author={Tatsuya Matsushima and Hiroki Furuta and Yusuke Iwasawa and Yutaka Matsuo},
-                year={2023},
-            }""").lstrip(),
-    },
-    "utokyo_xarm_pick_and_place": {
-        "tasks_col": "language_instruction",
-        "license": "cc-by-4.0",
-        "citation_bibtex": dedent(r"""
-            @misc{matsushima2023weblab,
-                title={Weblab xArm Dataset},
-                author={Tatsuya Matsushima and Hiroki Furuta and Yusuke Iwasawa and Yutaka Matsuo},
-                year={2023},
-            }""").lstrip(),
-    },
-    "viola": {
-        "tasks_col": "language_instruction",
-        "license": "mit",
-        "url": "https://ut-austin-rpl.github.io/VIOLA/",
-        "paper": "https://huggingface.co/papers/2210.11339",
-        "citation_bibtex": dedent(r"""
-            @article{zhu2022viola,
-                title={VIOLA: Imitation Learning for Vision-Based Manipulation with Object Proposal Priors},
-                author={Zhu, Yifeng and Joshi, Abhishek and Stone, Peter and Zhu, Yuke},
-                journal={6th Annual Conference on Robot Learning (CoRL)},
-                year={2022}
-            }""").lstrip(),
-    },
-}
-# spellchecker:on
-
-
-def batch_convert():
-    status = {}
-    logfile = LOCAL_DIR / "conversion_log.txt"
-    assert set(DATASETS) == {id_.split("/")[1] for id_ in available_datasets}
-    for num, (name, kwargs) in enumerate(DATASETS.items()):
-        repo_id = f"lerobot/{name}"
-        print(f"\nConverting {repo_id} ({num}/{len(DATASETS)})")
-        print("---------------------------------------------------------")
-        try:
-            convert_dataset(repo_id, LOCAL_DIR, **kwargs)
-            status = f"{repo_id}: success."
-            with open(logfile, "a") as file:
-                file.write(status + "\n")
-        except Exception:
-            status = f"{repo_id}: failed\n    {traceback.format_exc()}"
-            with open(logfile, "a") as file:
-                file.write(status + "\n")
-            continue
-
-
-if __name__ == "__main__":
-    batch_convert()

src/lerobot/datasets/v2/convert_dataset_v1_to_v2.py

@@ -1,687 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-This script will help you convert any LeRobot dataset already pushed to the hub from codebase version 1.6 to
-2.0. You will be required to provide the 'tasks', which is a short but accurate description in plain English
-for each of the task performed in the dataset. This will allow to easily train models with task-conditioning.
-
-We support 3 different scenarios for these tasks (see instructions below):
-    1. Single task dataset: all episodes of your dataset have the same single task.
-    2. Single task episodes: the episodes of your dataset each contain a single task but they can differ from
-      one episode to the next.
-    3. Multi task episodes: episodes of your dataset may each contain several different tasks.
-
-
-Can you can also provide a robot config .yaml file (not mandatory) to this script via the option
-'--robot-config' so that it writes information about the robot (robot type, motors names) this dataset was
-recorded with. For now, only Aloha/Koch type robots are supported with this option.
-
-
-# 1. Single task dataset
-If your dataset contains a single task, you can simply provide it directly via the CLI with the
-'--single-task' option.
-
-Examples:
-
-```bash
-python -m lerobot.datasets.v2.convert_dataset_v1_to_v2 \
-    --repo-id lerobot/aloha_sim_insertion_human_image \
-    --single-task "Insert the peg into the socket." \
-    --robot-config lerobot/configs/robot/aloha.yaml \
-    --local-dir data
-```
-
-```bash
-python -m lerobot.datasets.v2.convert_dataset_v1_to_v2 \
-    --repo-id aliberts/koch_tutorial \
-    --single-task "Pick the Lego block and drop it in the box on the right." \
-    --robot-config lerobot/configs/robot/koch.yaml \
-    --local-dir data
-```
-
-
-# 2. Single task episodes
-If your dataset is a multi-task dataset, you have two options to provide the tasks to this script:
-
-- If your dataset already contains a language instruction column in its parquet file, you can simply provide
-  this column's name with the '--tasks-col' arg.
-
-    Example:
-
-    ```bash
-    python -m lerobot.datasets.v2.convert_dataset_v1_to_v2 \
-        --repo-id lerobot/stanford_kuka_multimodal_dataset \
-        --tasks-col "language_instruction" \
-        --local-dir data
-    ```
-
-- If your dataset doesn't contain a language instruction, you should provide the path to a .json file with the
-  '--tasks-path' arg. This file should have the following structure where keys correspond to each
-  episode_index in the dataset, and values are the language instruction for that episode.
-
-    Example:
-
-    ```json
-    {
-        "0": "Do something",
-        "1": "Do something else",
-        "2": "Do something",
-        "3": "Go there",
-        ...
-    }
-    ```
-
-# 3. Multi task episodes
-If you have multiple tasks per episodes, your dataset should contain a language instruction column in its
-parquet file, and you must provide this column's name with the '--tasks-col' arg.
-
-Example:
-
-```bash
-python -m lerobot.datasets.v2.convert_dataset_v1_to_v2 \
-    --repo-id lerobot/stanford_kuka_multimodal_dataset \
-    --tasks-col "language_instruction" \
-    --local-dir data
-```
-"""
-
-import argparse
-import contextlib
-import filecmp
-import json
-import logging
-import math
-import shutil
-import subprocess
-import tempfile
-from pathlib import Path
-
-import datasets
-import pyarrow.compute as pc
-import pyarrow.parquet as pq
-import torch
-from datasets import Dataset
-from huggingface_hub import HfApi
-from huggingface_hub.errors import EntryNotFoundError, HfHubHTTPError
-from safetensors.torch import load_file
-
-from lerobot.datasets.utils import (
-    DEFAULT_CHUNK_SIZE,
-    DEFAULT_PARQUET_PATH,
-    DEFAULT_VIDEO_PATH,
-    EPISODES_PATH,
-    INFO_PATH,
-    STATS_PATH,
-    TASKS_PATH,
-    create_branch,
-    create_lerobot_dataset_card,
-    flatten_dict,
-    get_safe_version,
-    load_json,
-    unflatten_dict,
-    write_json,
-    write_jsonlines,
-)
-from lerobot.datasets.video_utils import (
-    VideoFrame,  # noqa: F401
-    get_image_pixel_channels,
-    get_video_info,
-)
-from lerobot.robots import RobotConfig
-
-V16 = "v1.6"
-V20 = "v2.0"
-
-GITATTRIBUTES_REF = "aliberts/gitattributes_reference"
-V1_VIDEO_FILE = "{video_key}_episode_{episode_index:06d}.mp4"
-V1_INFO_PATH = "meta_data/info.json"
-V1_STATS_PATH = "meta_data/stats.safetensors"
-
-
-def parse_robot_config(robot_cfg: RobotConfig) -> tuple[str, dict]:
-    if robot_cfg.type in ["aloha", "koch"]:
-        state_names = [
-            f"{arm}_{motor}" if len(robot_cfg.follower_arms) > 1 else motor
-            for arm in robot_cfg.follower_arms
-            for motor in robot_cfg.follower_arms[arm].motors
-        ]
-        action_names = [
-            # f"{arm}_{motor}" for arm in ["left", "right"] for motor in robot_cfg["leader_arms"][arm]["motors"]
-            f"{arm}_{motor}" if len(robot_cfg.leader_arms) > 1 else motor
-            for arm in robot_cfg.leader_arms
-            for motor in robot_cfg.leader_arms[arm].motors
-        ]
-    # elif robot_cfg["robot_type"] == "stretch3": TODO
-    else:
-        raise NotImplementedError(
-            "Please provide robot_config={'robot_type': ..., 'names': ...} directly to convert_dataset()."
-        )
-
-    return {
-        "robot_type": robot_cfg.type,
-        "names": {
-            "observation.state": state_names,
-            "observation.effort": state_names,
-            "action": action_names,
-        },
-    }
-
-
-def convert_stats_to_json(v1_dir: Path, v2_dir: Path) -> None:
-    safetensor_path = v1_dir / V1_STATS_PATH
-    stats = load_file(safetensor_path)
-    serialized_stats = {key: value.tolist() for key, value in stats.items()}
-    serialized_stats = unflatten_dict(serialized_stats)
-
-    json_path = v2_dir / STATS_PATH
-    json_path.parent.mkdir(exist_ok=True, parents=True)
-    with open(json_path, "w") as f:
-        json.dump(serialized_stats, f, indent=4)
-
-    # Sanity check
-    with open(json_path) as f:
-        stats_json = json.load(f)
-
-    stats_json = flatten_dict(stats_json)
-    stats_json = {key: torch.tensor(value) for key, value in stats_json.items()}
-    for key in stats:
-        torch.testing.assert_close(stats_json[key], stats[key])
-
-
-def get_features_from_hf_dataset(
-    dataset: Dataset, robot_config: RobotConfig | None = None
-) -> dict[str, list]:
-    robot_config = parse_robot_config(robot_config)
-    features = {}
-    for key, ft in dataset.features.items():
-        if isinstance(ft, datasets.Value):
-            dtype = ft.dtype
-            shape = (1,)
-            names = None
-        if isinstance(ft, datasets.Sequence):
-            assert isinstance(ft.feature, datasets.Value)
-            dtype = ft.feature.dtype
-            shape = (ft.length,)
-            motor_names = (
-                robot_config["names"][key] if robot_config else [f"motor_{i}" for i in range(ft.length)]
-            )
-            assert len(motor_names) == shape[0]
-            names = {"motors": motor_names}
-        elif isinstance(ft, datasets.Image):
-            dtype = "image"
-            image = dataset[0][key]  # Assuming first row
-            channels = get_image_pixel_channels(image)
-            shape = (image.height, image.width, channels)
-            names = ["height", "width", "channels"]
-        elif ft._type == "VideoFrame":
-            dtype = "video"
-            shape = None  # Add shape later
-            names = ["height", "width", "channels"]
-
-        features[key] = {
-            "dtype": dtype,
-            "shape": shape,
-            "names": names,
-        }
-
-    return features
-
-
-def add_task_index_by_episodes(dataset: Dataset, tasks_by_episodes: dict) -> tuple[Dataset, list[str]]:
-    df = dataset.to_pandas()
-    tasks = list(set(tasks_by_episodes.values()))
-    tasks_to_task_index = {task: task_idx for task_idx, task in enumerate(tasks)}
-    episodes_to_task_index = {ep_idx: tasks_to_task_index[task] for ep_idx, task in tasks_by_episodes.items()}
-    df["task_index"] = df["episode_index"].map(episodes_to_task_index).astype(int)
-
-    features = dataset.features
-    features["task_index"] = datasets.Value(dtype="int64")
-    dataset = Dataset.from_pandas(df, features=features, split="train")
-    return dataset, tasks
-
-
-def add_task_index_from_tasks_col(
-    dataset: Dataset, tasks_col: str
-) -> tuple[Dataset, dict[str, list[str]], list[str]]:
-    df = dataset.to_pandas()
-
-    # HACK: This is to clean some of the instructions in our version of Open X datasets
-    prefix_to_clean = "tf.Tensor(b'"
-    suffix_to_clean = "', shape=(), dtype=string)"
-    df[tasks_col] = df[tasks_col].str.removeprefix(prefix_to_clean).str.removesuffix(suffix_to_clean)
-
-    # Create task_index col
-    tasks_by_episode = df.groupby("episode_index")[tasks_col].unique().apply(lambda x: x.tolist()).to_dict()
-    tasks = df[tasks_col].unique().tolist()
-    tasks_to_task_index = {task: idx for idx, task in enumerate(tasks)}
-    df["task_index"] = df[tasks_col].map(tasks_to_task_index).astype(int)
-
-    # Build the dataset back from df
-    features = dataset.features
-    features["task_index"] = datasets.Value(dtype="int64")
-    dataset = Dataset.from_pandas(df, features=features, split="train")
-    dataset = dataset.remove_columns(tasks_col)
-
-    return dataset, tasks, tasks_by_episode
-
-
-def split_parquet_by_episodes(
-    dataset: Dataset,
-    total_episodes: int,
-    total_chunks: int,
-    output_dir: Path,
-) -> list:
-    table = dataset.data.table
-    episode_lengths = []
-    for ep_chunk in range(total_chunks):
-        ep_chunk_start = DEFAULT_CHUNK_SIZE * ep_chunk
-        ep_chunk_end = min(DEFAULT_CHUNK_SIZE * (ep_chunk + 1), total_episodes)
-        chunk_dir = "/".join(DEFAULT_PARQUET_PATH.split("/")[:-1]).format(episode_chunk=ep_chunk)
-        (output_dir / chunk_dir).mkdir(parents=True, exist_ok=True)
-        for ep_idx in range(ep_chunk_start, ep_chunk_end):
-            ep_table = table.filter(pc.equal(table["episode_index"], ep_idx))
-            episode_lengths.insert(ep_idx, len(ep_table))
-            output_file = output_dir / DEFAULT_PARQUET_PATH.format(
-                episode_chunk=ep_chunk, episode_index=ep_idx
-            )
-            pq.write_table(ep_table, output_file)
-
-    return episode_lengths
-
-
-def move_videos(
-    repo_id: str,
-    video_keys: list[str],
-    total_episodes: int,
-    total_chunks: int,
-    work_dir: Path,
-    clean_gittatributes: Path,
-    branch: str = "main",
-) -> None:
-    """
-    HACK: Since HfApi() doesn't provide a way to move files directly in a repo, this function will run git
-    commands to fetch git lfs video files references to move them into subdirectories without having to
-    actually download them.
-    """
-    _lfs_clone(repo_id, work_dir, branch)
-
-    videos_moved = False
-    video_files = [str(f.relative_to(work_dir)) for f in work_dir.glob("videos*/*.mp4")]
-    if len(video_files) == 0:
-        video_files = [str(f.relative_to(work_dir)) for f in work_dir.glob("videos*/*/*/*.mp4")]
-        videos_moved = True  # Videos have already been moved
-
-    assert len(video_files) == total_episodes * len(video_keys)
-
-    lfs_untracked_videos = _get_lfs_untracked_videos(work_dir, video_files)
-
-    current_gittatributes = work_dir / ".gitattributes"
-    if not filecmp.cmp(current_gittatributes, clean_gittatributes, shallow=False):
-        fix_gitattributes(work_dir, current_gittatributes, clean_gittatributes)
-
-    if lfs_untracked_videos:
-        fix_lfs_video_files_tracking(work_dir, video_files)
-
-    if videos_moved:
-        return
-
-    video_dirs = sorted(work_dir.glob("videos*/"))
-    for ep_chunk in range(total_chunks):
-        ep_chunk_start = DEFAULT_CHUNK_SIZE * ep_chunk
-        ep_chunk_end = min(DEFAULT_CHUNK_SIZE * (ep_chunk + 1), total_episodes)
-        for vid_key in video_keys:
-            chunk_dir = "/".join(DEFAULT_VIDEO_PATH.split("/")[:-1]).format(
-                episode_chunk=ep_chunk, video_key=vid_key
-            )
-            (work_dir / chunk_dir).mkdir(parents=True, exist_ok=True)
-
-            for ep_idx in range(ep_chunk_start, ep_chunk_end):
-                target_path = DEFAULT_VIDEO_PATH.format(
-                    episode_chunk=ep_chunk, video_key=vid_key, episode_index=ep_idx
-                )
-                video_file = V1_VIDEO_FILE.format(video_key=vid_key, episode_index=ep_idx)
-                if len(video_dirs) == 1:
-                    video_path = video_dirs[0] / video_file
-                else:
-                    for dir in video_dirs:
-                        if (dir / video_file).is_file():
-                            video_path = dir / video_file
-                            break
-
-                video_path.rename(work_dir / target_path)
-
-    commit_message = "Move video files into chunk subdirectories"
-    subprocess.run(["git", "add", "."], cwd=work_dir, check=True)
-    subprocess.run(["git", "commit", "-m", commit_message], cwd=work_dir, check=True)
-    subprocess.run(["git", "push"], cwd=work_dir, check=True)
-
-
-def fix_lfs_video_files_tracking(work_dir: Path, lfs_untracked_videos: list[str]) -> None:
-    """
-    HACK: This function fixes the tracking by git lfs which was not properly set on some repos. In that case,
-    there's no other option than to download the actual files and reupload them with lfs tracking.
-    """
-    for i in range(0, len(lfs_untracked_videos), 100):
-        files = lfs_untracked_videos[i : i + 100]
-        try:
-            subprocess.run(["git", "rm", "--cached", *files], cwd=work_dir, capture_output=True, check=True)
-        except subprocess.CalledProcessError as e:
-            print("git rm --cached ERROR:")
-            print(e.stderr)
-        subprocess.run(["git", "add", *files], cwd=work_dir, check=True)
-
-    commit_message = "Track video files with git lfs"
-    subprocess.run(["git", "commit", "-m", commit_message], cwd=work_dir, check=True)
-    subprocess.run(["git", "push"], cwd=work_dir, check=True)
-
-
-def fix_gitattributes(work_dir: Path, current_gittatributes: Path, clean_gittatributes: Path) -> None:
-    shutil.copyfile(clean_gittatributes, current_gittatributes)
-    subprocess.run(["git", "add", ".gitattributes"], cwd=work_dir, check=True)
-    subprocess.run(["git", "commit", "-m", "Fix .gitattributes"], cwd=work_dir, check=True)
-    subprocess.run(["git", "push"], cwd=work_dir, check=True)
-
-
-def _lfs_clone(repo_id: str, work_dir: Path, branch: str) -> None:
-    subprocess.run(["git", "lfs", "install"], cwd=work_dir, check=True)
-    repo_url = f"https://huggingface.co/datasets/{repo_id}"
-    env = {"GIT_LFS_SKIP_SMUDGE": "1"}  # Prevent downloading LFS files
-    subprocess.run(
-        ["git", "clone", "--branch", branch, "--single-branch", "--depth", "1", repo_url, str(work_dir)],
-        check=True,
-        env=env,
-    )
-
-
-def _get_lfs_untracked_videos(work_dir: Path, video_files: list[str]) -> list[str]:
-    lfs_tracked_files = subprocess.run(
-        ["git", "lfs", "ls-files", "-n"], cwd=work_dir, capture_output=True, text=True, check=True
-    )
-    lfs_tracked_files = set(lfs_tracked_files.stdout.splitlines())
-    return [f for f in video_files if f not in lfs_tracked_files]
-
-
-def get_videos_info(repo_id: str, local_dir: Path, video_keys: list[str], branch: str) -> dict:
-    # Assumes first episode
-    video_files = [
-        DEFAULT_VIDEO_PATH.format(episode_chunk=0, video_key=vid_key, episode_index=0)
-        for vid_key in video_keys
-    ]
-    hub_api = HfApi()
-    hub_api.snapshot_download(
-        repo_id=repo_id, repo_type="dataset", local_dir=local_dir, revision=branch, allow_patterns=video_files
-    )
-    videos_info_dict = {}
-    for vid_key, vid_path in zip(video_keys, video_files, strict=True):
-        videos_info_dict[vid_key] = get_video_info(local_dir / vid_path)
-
-    return videos_info_dict
-
-
-def convert_dataset(
-    repo_id: str,
-    local_dir: Path,
-    single_task: str | None = None,
-    tasks_path: Path | None = None,
-    tasks_col: Path | None = None,
-    robot_config: RobotConfig | None = None,
-    test_branch: str | None = None,
-    **card_kwargs,
-):
-    v1 = get_safe_version(repo_id, V16)
-    v1x_dir = local_dir / V16 / repo_id
-    v20_dir = local_dir / V20 / repo_id
-    v1x_dir.mkdir(parents=True, exist_ok=True)
-    v20_dir.mkdir(parents=True, exist_ok=True)
-
-    hub_api = HfApi()
-    hub_api.snapshot_download(
-        repo_id=repo_id, repo_type="dataset", revision=v1, local_dir=v1x_dir, ignore_patterns="videos*/"
-    )
-    branch = "main"
-    if test_branch:
-        branch = test_branch
-        create_branch(repo_id=repo_id, branch=test_branch, repo_type="dataset")
-
-    metadata_v1 = load_json(v1x_dir / V1_INFO_PATH)
-    dataset = datasets.load_dataset("parquet", data_dir=v1x_dir / "data", split="train")
-    features = get_features_from_hf_dataset(dataset, robot_config)
-    video_keys = [key for key, ft in features.items() if ft["dtype"] == "video"]
-
-    if single_task and "language_instruction" in dataset.column_names:
-        logging.warning(
-            "'single_task' provided but 'language_instruction' tasks_col found. Using 'language_instruction'.",
-        )
-        single_task = None
-        tasks_col = "language_instruction"
-
-    # Episodes & chunks
-    episode_indices = sorted(dataset.unique("episode_index"))
-    total_episodes = len(episode_indices)
-    assert episode_indices == list(range(total_episodes))
-    total_videos = total_episodes * len(video_keys)
-    total_chunks = total_episodes // DEFAULT_CHUNK_SIZE
-    if total_episodes % DEFAULT_CHUNK_SIZE != 0:
-        total_chunks += 1
-
-    # Tasks
-    if single_task:
-        tasks_by_episodes = dict.fromkeys(episode_indices, single_task)
-        dataset, tasks = add_task_index_by_episodes(dataset, tasks_by_episodes)
-        tasks_by_episodes = {ep_idx: [task] for ep_idx, task in tasks_by_episodes.items()}
-    elif tasks_path:
-        tasks_by_episodes = load_json(tasks_path)
-        tasks_by_episodes = {int(ep_idx): task for ep_idx, task in tasks_by_episodes.items()}
-        dataset, tasks = add_task_index_by_episodes(dataset, tasks_by_episodes)
-        tasks_by_episodes = {ep_idx: [task] for ep_idx, task in tasks_by_episodes.items()}
-    elif tasks_col:
-        dataset, tasks, tasks_by_episodes = add_task_index_from_tasks_col(dataset, tasks_col)
-    else:
-        raise ValueError
-
-    assert set(tasks) == {task for ep_tasks in tasks_by_episodes.values() for task in ep_tasks}
-    tasks = [{"task_index": task_idx, "task": task} for task_idx, task in enumerate(tasks)]
-    write_jsonlines(tasks, v20_dir / TASKS_PATH)
-    features["task_index"] = {
-        "dtype": "int64",
-        "shape": (1,),
-        "names": None,
-    }
-
-    # Videos
-    if video_keys:
-        assert metadata_v1.get("video", False)
-        dataset = dataset.remove_columns(video_keys)
-        clean_gitattr = Path(
-            hub_api.hf_hub_download(
-                repo_id=GITATTRIBUTES_REF, repo_type="dataset", local_dir=local_dir, filename=".gitattributes"
-            )
-        ).absolute()
-        with tempfile.TemporaryDirectory() as tmp_video_dir:
-            move_videos(
-                repo_id, video_keys, total_episodes, total_chunks, Path(tmp_video_dir), clean_gitattr, branch
-            )
-        videos_info = get_videos_info(repo_id, v1x_dir, video_keys=video_keys, branch=branch)
-        for key in video_keys:
-            features[key]["shape"] = (
-                videos_info[key].pop("video.height"),
-                videos_info[key].pop("video.width"),
-                videos_info[key].pop("video.channels"),
-            )
-            features[key]["video_info"] = videos_info[key]
-            assert math.isclose(videos_info[key]["video.fps"], metadata_v1["fps"], rel_tol=1e-3)
-            if "encoding" in metadata_v1:
-                assert videos_info[key]["video.pix_fmt"] == metadata_v1["encoding"]["pix_fmt"]
-    else:
-        assert metadata_v1.get("video", 0) == 0
-        videos_info = None
-
-    # Split data into 1 parquet file by episode
-    episode_lengths = split_parquet_by_episodes(dataset, total_episodes, total_chunks, v20_dir)
-
-    if robot_config is not None:
-        robot_type = robot_config.type
-        repo_tags = [robot_type]
-    else:
-        robot_type = "unknown"
-        repo_tags = None
-
-    # Episodes
-    episodes = [
-        {"episode_index": ep_idx, "tasks": tasks_by_episodes[ep_idx], "length": episode_lengths[ep_idx]}
-        for ep_idx in episode_indices
-    ]
-    write_jsonlines(episodes, v20_dir / EPISODES_PATH)
-
-    # Assemble metadata v2.0
-    metadata_v2_0 = {
-        "codebase_version": V20,
-        "robot_type": robot_type,
-        "total_episodes": total_episodes,
-        "total_frames": len(dataset),
-        "total_tasks": len(tasks),
-        "total_videos": total_videos,
-        "total_chunks": total_chunks,
-        "chunks_size": DEFAULT_CHUNK_SIZE,
-        "fps": metadata_v1["fps"],
-        "splits": {"train": f"0:{total_episodes}"},
-        "data_path": DEFAULT_PARQUET_PATH,
-        "video_path": DEFAULT_VIDEO_PATH if video_keys else None,
-        "features": features,
-    }
-    write_json(metadata_v2_0, v20_dir / INFO_PATH)
-    convert_stats_to_json(v1x_dir, v20_dir)
-    card = create_lerobot_dataset_card(tags=repo_tags, dataset_info=metadata_v2_0, **card_kwargs)
-
-    with contextlib.suppress(EntryNotFoundError, HfHubHTTPError):
-        hub_api.delete_folder(repo_id=repo_id, path_in_repo="data", repo_type="dataset", revision=branch)
-
-    with contextlib.suppress(EntryNotFoundError, HfHubHTTPError):
-        hub_api.delete_folder(repo_id=repo_id, path_in_repo="meta_data", repo_type="dataset", revision=branch)
-
-    with contextlib.suppress(EntryNotFoundError, HfHubHTTPError):
-        hub_api.delete_folder(repo_id=repo_id, path_in_repo="meta", repo_type="dataset", revision=branch)
-
-    hub_api.upload_folder(
-        repo_id=repo_id,
-        path_in_repo="data",
-        folder_path=v20_dir / "data",
-        repo_type="dataset",
-        revision=branch,
-    )
-    hub_api.upload_folder(
-        repo_id=repo_id,
-        path_in_repo="meta",
-        folder_path=v20_dir / "meta",
-        repo_type="dataset",
-        revision=branch,
-    )
-
-    card.push_to_hub(repo_id=repo_id, repo_type="dataset", revision=branch)
-
-    if not test_branch:
-        create_branch(repo_id=repo_id, branch=V20, repo_type="dataset")
-
-
-def make_robot_config(robot_type: str, **kwargs) -> RobotConfig:
-    if robot_type == "aloha":
-        raise NotImplementedError  # TODO
-
-    elif robot_type == "koch_follower":
-        from lerobot.robots.koch_follower import KochFollowerConfig
-
-        return KochFollowerConfig(**kwargs)
-    elif robot_type == "so100_follower":
-        from lerobot.robots.so100_follower import SO100FollowerConfig
-
-        return SO100FollowerConfig(**kwargs)
-    elif robot_type == "stretch":
-        from lerobot.robots.stretch3 import Stretch3RobotConfig
-
-        return Stretch3RobotConfig(**kwargs)
-    elif robot_type == "lekiwi":
-        from lerobot.robots.lekiwi import LeKiwiConfig
-
-        return LeKiwiConfig(**kwargs)
-    else:
-        raise ValueError(f"Robot type '{robot_type}' is not available.")
-
-
-def main():
-    parser = argparse.ArgumentParser()
-    task_args = parser.add_mutually_exclusive_group(required=True)
-
-    parser.add_argument(
-        "--repo-id",
-        type=str,
-        required=True,
-        help="Repository identifier on Hugging Face: a community or a user name `/` the name of the dataset (e.g. `lerobot/pusht`, `cadene/aloha_sim_insertion_human`).",
-    )
-    task_args.add_argument(
-        "--single-task",
-        type=str,
-        help="A short but accurate description of the single task performed in the dataset.",
-    )
-    task_args.add_argument(
-        "--tasks-col",
-        type=str,
-        help="The name of the column containing language instructions",
-    )
-    task_args.add_argument(
-        "--tasks-path",
-        type=Path,
-        help="The path to a .json file containing one language instruction for each episode_index",
-    )
-    parser.add_argument(
-        "--robot",
-        type=str,
-        default=None,
-        help="Robot config used for the dataset during conversion (e.g. 'koch', 'aloha', 'so100', etc.)",
-    )
-    parser.add_argument(
-        "--local-dir",
-        type=Path,
-        default=None,
-        help="Local directory to store the dataset during conversion. Defaults to /tmp/lerobot_dataset_v2",
-    )
-    parser.add_argument(
-        "--license",
-        type=str,
-        default="apache-2.0",
-        help="Repo license. Must be one of https://huggingface.co/docs/hub/repositories-licenses. Defaults to mit.",
-    )
-    parser.add_argument(
-        "--test-branch",
-        type=str,
-        default=None,
-        help="Repo branch to test your conversion first (e.g. 'v2.0.test')",
-    )
-
-    args = parser.parse_args()
-    if not args.local_dir:
-        args.local_dir = Path("/tmp/lerobot_dataset_v2")
-
-    if args.robot is not None:
-        robot_config = make_robot_config(args.robot)
-
-    del args.robot
-
-    convert_dataset(**vars(args), robot_config=robot_config)
-
-
-if __name__ == "__main__":
-    main()

src/lerobot/datasets/v21/_remove_language_instruction.py

@@ -1,87 +0,0 @@
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import logging
-import traceback
-from pathlib import Path
-
-from datasets import get_dataset_config_info
-from huggingface_hub import HfApi
-
-from lerobot import available_datasets
-from lerobot.datasets.lerobot_dataset import LeRobotDatasetMetadata
-from lerobot.datasets.utils import INFO_PATH, write_info
-from lerobot.datasets.v21.convert_dataset_v20_to_v21 import V20, SuppressWarnings
-
-LOCAL_DIR = Path("data/")
-
-hub_api = HfApi()
-
-
-def fix_dataset(repo_id: str) -> str:
-    if not hub_api.revision_exists(repo_id, V20, repo_type="dataset"):
-        return f"{repo_id}: skipped (not in {V20})."
-
-    dataset_info = get_dataset_config_info(repo_id, "default")
-    with SuppressWarnings():
-        lerobot_metadata = LeRobotDatasetMetadata(repo_id, revision=V20, force_cache_sync=True)
-
-    meta_features = {key for key, ft in lerobot_metadata.features.items() if ft["dtype"] != "video"}
-    parquet_features = set(dataset_info.features)
-
-    diff_parquet_meta = parquet_features - meta_features
-    diff_meta_parquet = meta_features - parquet_features
-
-    if diff_parquet_meta:
-        raise ValueError(f"In parquet not in info.json: {parquet_features - meta_features}")
-
-    if not diff_meta_parquet:
-        return f"{repo_id}: skipped (no diff)"
-
-    if diff_meta_parquet:
-        logging.warning(f"In info.json not in parquet: {meta_features - parquet_features}")
-        assert diff_meta_parquet == {"language_instruction"}
-        lerobot_metadata.features.pop("language_instruction")
-        write_info(lerobot_metadata.info, lerobot_metadata.root)
-        commit_info = hub_api.upload_file(
-            path_or_fileobj=lerobot_metadata.root / INFO_PATH,
-            path_in_repo=INFO_PATH,
-            repo_id=repo_id,
-            repo_type="dataset",
-            revision=V20,
-            commit_message="Remove 'language_instruction'",
-            create_pr=True,
-        )
-        return f"{repo_id}: success - PR: {commit_info.pr_url}"
-
-
-def batch_fix():
-    status = {}
-    LOCAL_DIR.mkdir(parents=True, exist_ok=True)
-    logfile = LOCAL_DIR / "fix_features_v20.txt"
-    for num, repo_id in enumerate(available_datasets):
-        print(f"\nConverting {repo_id} ({num}/{len(available_datasets)})")
-        print("---------------------------------------------------------")
-        try:
-            status = fix_dataset(repo_id)
-        except Exception:
-            status = f"{repo_id}: failed\n    {traceback.format_exc()}"
-
-        logging.info(status)
-        with open(logfile, "a") as file:
-            file.write(status + "\n")
-
-
-if __name__ == "__main__":
-    batch_fix()

src/lerobot/datasets/v21/batch_convert_dataset_v20_to_v21.py

@@ -1,54 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-This script is for internal use to convert all datasets under the 'lerobot' hub user account to v2.1.
-"""
-
-import traceback
-from pathlib import Path
-
-from huggingface_hub import HfApi
-
-from lerobot import available_datasets
-from lerobot.datasets.v21.convert_dataset_v20_to_v21 import V21, convert_dataset
-
-LOCAL_DIR = Path("data/")
-
-
-def batch_convert():
-    status = {}
-    LOCAL_DIR.mkdir(parents=True, exist_ok=True)
-    logfile = LOCAL_DIR / "conversion_log_v21.txt"
-    hub_api = HfApi()
-    for num, repo_id in enumerate(available_datasets):
-        print(f"\nConverting {repo_id} ({num}/{len(available_datasets)})")
-        print("---------------------------------------------------------")
-        try:
-            if hub_api.revision_exists(repo_id, V21, repo_type="dataset"):
-                status = f"{repo_id}: success (already in {V21})."
-            else:
-                convert_dataset(repo_id)
-                status = f"{repo_id}: success."
-        except Exception:
-            status = f"{repo_id}: failed\n    {traceback.format_exc()}"
-
-        with open(logfile, "a") as file:
-            file.write(status + "\n")
-
-
-if __name__ == "__main__":
-    batch_convert()

src/lerobot/datasets/v21/convert_dataset_v20_to_v21.py

@@ -1,114 +0,0 @@
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-This script will help you convert any LeRobot dataset already pushed to the hub from codebase version 2.0 to
-2.1. It will:
-
-- Generate per-episodes stats and writes them in `episodes_stats.jsonl`
-- Check consistency between these new stats and the old ones.
-- Remove the deprecated `stats.json`.
-- Update codebase_version in `info.json`.
-- Push this new version to the hub on the 'main' branch and tags it with "v2.1".
-
-Usage:
-
-```bash
-python -m lerobot.datasets.v21.convert_dataset_v20_to_v21 \
-    --repo-id=aliberts/koch_tutorial
-```
-
-"""
-
-import argparse
-import logging
-
-from huggingface_hub import HfApi
-
-from lerobot.datasets.lerobot_dataset import CODEBASE_VERSION, LeRobotDataset
-from lerobot.datasets.utils import EPISODES_STATS_PATH, STATS_PATH, load_stats, write_info
-from lerobot.datasets.v21.convert_stats import check_aggregate_stats, convert_stats
-
-V20 = "v2.0"
-V21 = "v2.1"
-
-
-class SuppressWarnings:
-    def __enter__(self):
-        self.previous_level = logging.getLogger().getEffectiveLevel()
-        logging.getLogger().setLevel(logging.ERROR)
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        logging.getLogger().setLevel(self.previous_level)
-
-
-def convert_dataset(
-    repo_id: str,
-    branch: str | None = None,
-    num_workers: int = 4,
-):
-    with SuppressWarnings():
-        dataset = LeRobotDataset(repo_id, revision=V20, force_cache_sync=True)
-
-    if (dataset.root / EPISODES_STATS_PATH).is_file():
-        (dataset.root / EPISODES_STATS_PATH).unlink()
-
-    convert_stats(dataset, num_workers=num_workers)
-    ref_stats = load_stats(dataset.root)
-    check_aggregate_stats(dataset, ref_stats)
-
-    dataset.meta.info["codebase_version"] = CODEBASE_VERSION
-    write_info(dataset.meta.info, dataset.root)
-
-    dataset.push_to_hub(branch=branch, tag_version=False, allow_patterns="meta/")
-
-    # delete old stats.json file
-    if (dataset.root / STATS_PATH).is_file:
-        (dataset.root / STATS_PATH).unlink()
-
-    hub_api = HfApi()
-    if hub_api.file_exists(
-        repo_id=dataset.repo_id, filename=STATS_PATH, revision=branch, repo_type="dataset"
-    ):
-        hub_api.delete_file(
-            path_in_repo=STATS_PATH, repo_id=dataset.repo_id, revision=branch, repo_type="dataset"
-        )
-
-    hub_api.create_tag(repo_id, tag=CODEBASE_VERSION, revision=branch, repo_type="dataset")
-
-
-if __name__ == "__main__":
-    parser = argparse.ArgumentParser()
-    parser.add_argument(
-        "--repo-id",
-        type=str,
-        required=True,
-        help="Repository identifier on Hugging Face: a community or a user name `/` the name of the dataset "
-        "(e.g. `lerobot/pusht`, `cadene/aloha_sim_insertion_human`).",
-    )
-    parser.add_argument(
-        "--branch",
-        type=str,
-        default=None,
-        help="Repo branch to push your dataset. Defaults to the main branch.",
-    )
-    parser.add_argument(
-        "--num-workers",
-        type=int,
-        default=4,
-        help="Number of workers for parallelizing stats compute. Defaults to 4.",
-    )
-
-    args = parser.parse_args()
-    convert_dataset(**vars(args))

src/lerobot/datasets/v21/convert_stats.py

@@ -1,99 +0,0 @@
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from concurrent.futures import ThreadPoolExecutor, as_completed
-
-import numpy as np
-from tqdm import tqdm
-
-from lerobot.datasets.compute_stats import aggregate_stats, get_feature_stats, sample_indices
-from lerobot.datasets.lerobot_dataset import LeRobotDataset
-from lerobot.datasets.utils import write_episode_stats
-
-
-def sample_episode_video_frames(dataset: LeRobotDataset, episode_index: int, ft_key: str) -> np.ndarray:
-    ep_len = dataset.meta.episodes[episode_index]["length"]
-    sampled_indices = sample_indices(ep_len)
-    query_timestamps = dataset._get_query_timestamps(0.0, {ft_key: sampled_indices})
-    video_frames = dataset._query_videos(query_timestamps, episode_index)
-    return video_frames[ft_key].numpy()
-
-
-def convert_episode_stats(dataset: LeRobotDataset, ep_idx: int):
-    ep_start_idx = dataset.episode_data_index["from"][ep_idx]
-    ep_end_idx = dataset.episode_data_index["to"][ep_idx]
-    ep_data = dataset.hf_dataset.select(range(ep_start_idx, ep_end_idx))
-
-    ep_stats = {}
-    for key, ft in dataset.features.items():
-        if ft["dtype"] == "video":
-            # We sample only for videos
-            ep_ft_data = sample_episode_video_frames(dataset, ep_idx, key)
-        else:
-            ep_ft_data = np.array(ep_data[key])
-
-        axes_to_reduce = (0, 2, 3) if ft["dtype"] in ["image", "video"] else 0
-        keepdims = True if ft["dtype"] in ["image", "video"] else ep_ft_data.ndim == 1
-        ep_stats[key] = get_feature_stats(ep_ft_data, axis=axes_to_reduce, keepdims=keepdims)
-
-        if ft["dtype"] in ["image", "video"]:  # remove batch dim
-            ep_stats[key] = {
-                k: v if k == "count" else np.squeeze(v, axis=0) for k, v in ep_stats[key].items()
-            }
-
-    dataset.meta.episodes_stats[ep_idx] = ep_stats
-
-
-def convert_stats(dataset: LeRobotDataset, num_workers: int = 0):
-    assert dataset.episodes is None
-    print("Computing episodes stats")
-    total_episodes = dataset.meta.total_episodes
-    if num_workers > 0:
-        with ThreadPoolExecutor(max_workers=num_workers) as executor:
-            futures = {
-                executor.submit(convert_episode_stats, dataset, ep_idx): ep_idx
-                for ep_idx in range(total_episodes)
-            }
-            for future in tqdm(as_completed(futures), total=total_episodes):
-                future.result()
-    else:
-        for ep_idx in tqdm(range(total_episodes)):
-            convert_episode_stats(dataset, ep_idx)
-
-    for ep_idx in tqdm(range(total_episodes)):
-        write_episode_stats(ep_idx, dataset.meta.episodes_stats[ep_idx], dataset.root)
-
-
-def check_aggregate_stats(
-    dataset: LeRobotDataset,
-    reference_stats: dict[str, dict[str, np.ndarray]],
-    video_rtol_atol: tuple[float] = (1e-2, 1e-2),
-    default_rtol_atol: tuple[float] = (5e-6, 6e-5),
-):
-    """Verifies that the aggregated stats from episodes_stats are close to reference stats."""
-    agg_stats = aggregate_stats(list(dataset.meta.episodes_stats.values()))
-    for key, ft in dataset.features.items():
-        # These values might need some fine-tuning
-        if ft["dtype"] == "video":
-            # to account for image sub-sampling
-            rtol, atol = video_rtol_atol
-        else:
-            rtol, atol = default_rtol_atol
-
-        for stat, val in agg_stats[key].items():
-            if key in reference_stats and stat in reference_stats[key]:
-                err_msg = f"feature='{key}' stats='{stat}'"
-                np.testing.assert_allclose(
-                    val, reference_stats[key][stat], rtol=rtol, atol=atol, err_msg=err_msg
-                )

src/lerobot/datasets/v30/convert_dataset_v21_to_v30.py

@@ -0,0 +1,491 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This script will help you convert any LeRobot dataset already pushed to the hub from codebase version 2.1 to
+3.0. It will:
+
+- Generate per-episodes stats and writes them in `episodes_stats.jsonl`
+- Check consistency between these new stats and the old ones.
+- Remove the deprecated `stats.json`.
+- Update codebase_version in `info.json`.
+- Push this new version to the hub on the 'main' branch and tags it with "v3.0".
+
+Usage:
+
+```bash
+python src/lerobot/datasets/v30/convert_dataset_v21_to_v30.py \
+    --repo-id=lerobot/pusht
+```
+
+"""
+
+import argparse
+import shutil
+from pathlib import Path
+from typing import Any
+
+import jsonlines
+import pandas as pd
+import pyarrow as pa
+import tqdm
+from datasets import Dataset, Features, Image
+from huggingface_hub import HfApi, snapshot_download
+from requests import HTTPError
+
+from lerobot.constants import HF_LEROBOT_HOME
+from lerobot.datasets.compute_stats import aggregate_stats
+from lerobot.datasets.lerobot_dataset import CODEBASE_VERSION, LeRobotDataset
+from lerobot.datasets.utils import (
+    DEFAULT_CHUNK_SIZE,
+    DEFAULT_DATA_FILE_SIZE_IN_MB,
+    DEFAULT_DATA_PATH,
+    DEFAULT_VIDEO_FILE_SIZE_IN_MB,
+    DEFAULT_VIDEO_PATH,
+    LEGACY_EPISODES_PATH,
+    LEGACY_EPISODES_STATS_PATH,
+    LEGACY_TASKS_PATH,
+    cast_stats_to_numpy,
+    flatten_dict,
+    get_parquet_file_size_in_mb,
+    get_parquet_num_frames,
+    get_video_size_in_mb,
+    load_info,
+    update_chunk_file_indices,
+    write_episodes,
+    write_info,
+    write_stats,
+    write_tasks,
+)
+from lerobot.datasets.video_utils import concat_video_files, get_video_duration_in_s
+
+V21 = "v2.1"
+
+
+"""
+-------------------------
+OLD
+data/chunk-000/episode_000000.parquet
+
+NEW
+data/chunk-000/file_000.parquet
+-------------------------
+OLD
+videos/chunk-000/CAMERA/episode_000000.mp4
+
+NEW
+videos/chunk-000/file_000.mp4
+-------------------------
+OLD
+episodes.jsonl
+{"episode_index": 1, "tasks": ["Put the blue block in the green bowl"], "length": 266}
+
+NEW
+meta/episodes/chunk-000/episodes_000.parquet
+episode_index | video_chunk_index | video_file_index | data_chunk_index | data_file_index | tasks | length
+-------------------------
+OLD
+tasks.jsonl
+{"task_index": 1, "task": "Put the blue block in the green bowl"}
+
+NEW
+meta/tasks/chunk-000/file_000.parquet
+task_index | task
+-------------------------
+OLD
+episodes_stats.jsonl
+
+NEW
+meta/episodes_stats/chunk-000/file_000.parquet
+episode_index | mean | std | min | max
+-------------------------
+UPDATE
+meta/info.json
+-------------------------
+"""
+
+
+def load_jsonlines(fpath: Path) -> list[Any]:
+    with jsonlines.open(fpath, "r") as reader:
+        return list(reader)
+
+
+def legacy_load_episodes(local_dir: Path) -> dict:
+    episodes = load_jsonlines(local_dir / LEGACY_EPISODES_PATH)
+    return {item["episode_index"]: item for item in sorted(episodes, key=lambda x: x["episode_index"])}
+
+
+def legacy_load_episodes_stats(local_dir: Path) -> dict:
+    episodes_stats = load_jsonlines(local_dir / LEGACY_EPISODES_STATS_PATH)
+    return {
+        item["episode_index"]: cast_stats_to_numpy(item["stats"])
+        for item in sorted(episodes_stats, key=lambda x: x["episode_index"])
+    }
+
+
+def legacy_load_tasks(local_dir: Path) -> tuple[dict, dict]:
+    tasks = load_jsonlines(local_dir / LEGACY_TASKS_PATH)
+    tasks = {item["task_index"]: item["task"] for item in sorted(tasks, key=lambda x: x["task_index"])}
+    task_to_task_index = {task: task_index for task_index, task in tasks.items()}
+    return tasks, task_to_task_index
+
+
+def convert_tasks(root, new_root):
+    tasks, _ = legacy_load_tasks(root)
+    task_indices = tasks.keys()
+    task_strings = tasks.values()
+    df_tasks = pd.DataFrame({"task_index": task_indices}, index=task_strings)
+    write_tasks(df_tasks, new_root)
+
+
+def concat_data_files(paths_to_cat, new_root, chunk_idx, file_idx, image_keys):
+    # TODO(rcadene): to save RAM use Dataset.from_parquet(file) and concatenate_datasets
+    dataframes = [pd.read_parquet(file) for file in paths_to_cat]
+    # Concatenate all DataFrames along rows
+    concatenated_df = pd.concat(dataframes, ignore_index=True)
+
+    path = new_root / DEFAULT_DATA_PATH.format(chunk_index=chunk_idx, file_index=file_idx)
+    path.parent.mkdir(parents=True, exist_ok=True)
+
+    if len(image_keys) > 0:
+        schema = pa.Schema.from_pandas(concatenated_df)
+        features = Features.from_arrow_schema(schema)
+        for key in image_keys:
+            features[key] = Image()
+        schema = features.arrow_schema
+    else:
+        schema = None
+
+    concatenated_df.to_parquet(path, index=False, schema=schema)
+
+
+def convert_data(root: Path, new_root: Path, data_file_size_in_mb: int):
+    data_dir = root / "data"
+    ep_paths = sorted(data_dir.glob("*/*.parquet"))
+
+    image_keys = get_image_keys(root)
+
+    ep_idx = 0
+    chunk_idx = 0
+    file_idx = 0
+    size_in_mb = 0
+    num_frames = 0
+    paths_to_cat = []
+    episodes_metadata = []
+    for ep_path in ep_paths:
+        ep_size_in_mb = get_parquet_file_size_in_mb(ep_path)
+        ep_num_frames = get_parquet_num_frames(ep_path)
+        ep_metadata = {
+            "episode_index": ep_idx,
+            "data/chunk_index": chunk_idx,
+            "data/file_index": file_idx,
+            "dataset_from_index": num_frames,
+            "dataset_to_index": num_frames + ep_num_frames,
+        }
+        size_in_mb += ep_size_in_mb
+        num_frames += ep_num_frames
+        episodes_metadata.append(ep_metadata)
+        ep_idx += 1
+
+        if size_in_mb < data_file_size_in_mb:
+            paths_to_cat.append(ep_path)
+            continue
+
+        concat_data_files(paths_to_cat, new_root, chunk_idx, file_idx, image_keys)
+
+        # Reset for the next file
+        size_in_mb = ep_size_in_mb
+        num_frames = ep_num_frames
+        paths_to_cat = [ep_path]
+
+        chunk_idx, file_idx = update_chunk_file_indices(chunk_idx, file_idx, DEFAULT_CHUNK_SIZE)
+
+    # Write remaining data if any
+    if paths_to_cat:
+        concat_data_files(paths_to_cat, new_root, chunk_idx, file_idx, image_keys)
+
+    return episodes_metadata
+
+
+def get_video_keys(root):
+    info = load_info(root)
+    features = info["features"]
+    video_keys = [key for key, ft in features.items() if ft["dtype"] == "video"]
+    return video_keys
+
+
+def get_image_keys(root):
+    info = load_info(root)
+    features = info["features"]
+    image_keys = [key for key, ft in features.items() if ft["dtype"] == "image"]
+    return image_keys
+
+
+def convert_videos(root: Path, new_root: Path, video_file_size_in_mb: int):
+    video_keys = get_video_keys(root)
+    if len(video_keys) == 0:
+        return None
+
+    video_keys = sorted(video_keys)
+
+    eps_metadata_per_cam = []
+    for camera in video_keys:
+        eps_metadata = convert_videos_of_camera(root, new_root, camera, video_file_size_in_mb)
+        eps_metadata_per_cam.append(eps_metadata)
+
+    num_eps_per_cam = [len(eps_cam_map) for eps_cam_map in eps_metadata_per_cam]
+    if len(set(num_eps_per_cam)) != 1:
+        raise ValueError(f"All cams dont have same number of episodes ({num_eps_per_cam}).")
+
+    episods_metadata = []
+    num_cameras = len(video_keys)
+    num_episodes = num_eps_per_cam[0]
+    for ep_idx in range(num_episodes):
+        # Sanity check
+        ep_ids = [eps_metadata_per_cam[cam_idx][ep_idx]["episode_index"] for cam_idx in range(num_cameras)]
+        ep_ids += [ep_idx]
+        if len(set(ep_ids)) != 1:
+            raise ValueError(f"All episode indices need to match ({ep_ids}).")
+
+        ep_dict = {}
+        for cam_idx in range(num_cameras):
+            ep_dict.update(eps_metadata_per_cam[cam_idx][ep_idx])
+        episods_metadata.append(ep_dict)
+
+    return episods_metadata
+
+
+def convert_videos_of_camera(root: Path, new_root: Path, video_key: str, video_file_size_in_mb: int):
+    # Access old paths to mp4
+    videos_dir = root / "videos"
+    ep_paths = sorted(videos_dir.glob(f"*/{video_key}/*.mp4"))
+
+    ep_idx = 0
+    chunk_idx = 0
+    file_idx = 0
+    size_in_mb = 0
+    duration_in_s = 0.0
+    paths_to_cat = []
+    episodes_metadata = []
+    for ep_path in tqdm.tqdm(ep_paths, desc=f"convert videos of {video_key}"):
+        ep_size_in_mb = get_video_size_in_mb(ep_path)
+        ep_duration_in_s = get_video_duration_in_s(ep_path)
+
+        # Check if adding this episode would exceed the limit
+        if size_in_mb + ep_size_in_mb >= video_file_size_in_mb and len(paths_to_cat) > 0:
+            # Size limit would be exceeded, save current accumulation WITHOUT this episode
+            concat_video_files(paths_to_cat, new_root, video_key, chunk_idx, file_idx)
+
+            # Update episodes metadata for the file we just saved
+            for i, _ in enumerate(paths_to_cat):
+                past_ep_idx = ep_idx - len(paths_to_cat) + i
+                episodes_metadata[past_ep_idx][f"videos/{video_key}/chunk_index"] = chunk_idx
+                episodes_metadata[past_ep_idx][f"videos/{video_key}/file_index"] = file_idx
+
+            # Move to next file and start fresh with current episode
+            chunk_idx, file_idx = update_chunk_file_indices(chunk_idx, file_idx, DEFAULT_CHUNK_SIZE)
+            size_in_mb = 0
+            duration_in_s = 0.0
+            paths_to_cat = []
+
+        # Add current episode metadata
+        ep_metadata = {
+            "episode_index": ep_idx,
+            f"videos/{video_key}/chunk_index": chunk_idx,  # Will be updated when file is saved
+            f"videos/{video_key}/file_index": file_idx,  # Will be updated when file is saved
+            f"videos/{video_key}/from_timestamp": duration_in_s,
+            f"videos/{video_key}/to_timestamp": duration_in_s + ep_duration_in_s,
+        }
+        episodes_metadata.append(ep_metadata)
+
+        # Add current episode to accumulation
+        paths_to_cat.append(ep_path)
+        size_in_mb += ep_size_in_mb
+        duration_in_s += ep_duration_in_s
+        ep_idx += 1
+
+    # Write remaining videos if any
+    if paths_to_cat:
+        concat_video_files(paths_to_cat, new_root, video_key, chunk_idx, file_idx)
+
+        # Update episodes metadata for the final file
+        for i, _ in enumerate(paths_to_cat):
+            past_ep_idx = ep_idx - len(paths_to_cat) + i
+            episodes_metadata[past_ep_idx][f"videos/{video_key}/chunk_index"] = chunk_idx
+            episodes_metadata[past_ep_idx][f"videos/{video_key}/file_index"] = file_idx
+
+    return episodes_metadata
+
+
+def generate_episode_metadata_dict(
+    episodes_legacy_metadata, episodes_metadata, episodes_stats, episodes_videos=None
+):
+    num_episodes = len(episodes_metadata)
+    episodes_legacy_metadata_vals = list(episodes_legacy_metadata.values())
+    episodes_stats_vals = list(episodes_stats.values())
+    episodes_stats_keys = list(episodes_stats.keys())
+
+    for i in range(num_episodes):
+        ep_legacy_metadata = episodes_legacy_metadata_vals[i]
+        ep_metadata = episodes_metadata[i]
+        ep_stats = episodes_stats_vals[i]
+
+        ep_ids_set = {
+            ep_legacy_metadata["episode_index"],
+            ep_metadata["episode_index"],
+            episodes_stats_keys[i],
+        }
+
+        if episodes_videos is None:
+            ep_video = {}
+        else:
+            ep_video = episodes_videos[i]
+            ep_ids_set.add(ep_video["episode_index"])
+
+        if len(ep_ids_set) != 1:
+            raise ValueError(f"Number of episodes is not the same ({ep_ids_set}).")
+
+        ep_dict = {**ep_metadata, **ep_video, **ep_legacy_metadata, **flatten_dict({"stats": ep_stats})}
+        ep_dict["meta/episodes/chunk_index"] = 0
+        ep_dict["meta/episodes/file_index"] = 0
+        yield ep_dict
+
+
+def convert_episodes_metadata(root, new_root, episodes_metadata, episodes_video_metadata=None):
+    episodes_legacy_metadata = legacy_load_episodes(root)
+    episodes_stats = legacy_load_episodes_stats(root)
+
+    num_eps_set = {len(episodes_legacy_metadata), len(episodes_metadata)}
+    if episodes_video_metadata is not None:
+        num_eps_set.add(len(episodes_video_metadata))
+
+    if len(num_eps_set) != 1:
+        raise ValueError(f"Number of episodes is not the same ({num_eps_set}).")
+
+    ds_episodes = Dataset.from_generator(
+        lambda: generate_episode_metadata_dict(
+            episodes_legacy_metadata, episodes_metadata, episodes_stats, episodes_video_metadata
+        )
+    )
+    write_episodes(ds_episodes, new_root)
+
+    stats = aggregate_stats(list(episodes_stats.values()))
+    write_stats(stats, new_root)
+
+
+def convert_info(root, new_root, data_file_size_in_mb, video_file_size_in_mb):
+    info = load_info(root)
+    info["codebase_version"] = "v3.0"
+    del info["total_chunks"]
+    del info["total_videos"]
+    info["data_files_size_in_mb"] = data_file_size_in_mb
+    info["video_files_size_in_mb"] = video_file_size_in_mb
+    info["data_path"] = DEFAULT_DATA_PATH
+    info["video_path"] = DEFAULT_VIDEO_PATH
+    info["fps"] = float(info["fps"])
+    for key in info["features"]:
+        if info["features"][key]["dtype"] == "video":
+            # already has fps in video_info
+            continue
+        info["features"][key]["fps"] = info["fps"]
+    write_info(info, new_root)
+
+
+def convert_dataset(
+    repo_id: str,
+    branch: str | None = None,
+    data_file_size_in_mb: int | None = None,
+    video_file_size_in_mb: int | None = None,
+):
+    root = HF_LEROBOT_HOME / repo_id
+    old_root = HF_LEROBOT_HOME / f"{repo_id}_old"
+    new_root = HF_LEROBOT_HOME / f"{repo_id}_v30"
+
+    if data_file_size_in_mb is None:
+        data_file_size_in_mb = DEFAULT_DATA_FILE_SIZE_IN_MB
+    if video_file_size_in_mb is None:
+        video_file_size_in_mb = DEFAULT_VIDEO_FILE_SIZE_IN_MB
+
+    if old_root.is_dir() and root.is_dir():
+        shutil.rmtree(str(root))
+        shutil.move(str(old_root), str(root))
+
+    if new_root.is_dir():
+        shutil.rmtree(new_root)
+
+    snapshot_download(
+        repo_id,
+        repo_type="dataset",
+        revision=V21,
+        local_dir=root,
+    )
+
+    convert_info(root, new_root, data_file_size_in_mb, video_file_size_in_mb)
+    convert_tasks(root, new_root)
+    episodes_metadata = convert_data(root, new_root, data_file_size_in_mb)
+    episodes_videos_metadata = convert_videos(root, new_root, video_file_size_in_mb)
+    convert_episodes_metadata(root, new_root, episodes_metadata, episodes_videos_metadata)
+
+    shutil.move(str(root), str(old_root))
+    shutil.move(str(new_root), str(root))
+
+    hub_api = HfApi()
+    try:
+        hub_api.delete_tag(repo_id, tag=CODEBASE_VERSION, repo_type="dataset")
+    except HTTPError as e:
+        print(f"tag={CODEBASE_VERSION} probably doesn't exist. Skipping exception ({e})")
+        pass
+    hub_api.delete_files(
+        delete_patterns=["data/chunk*/episode_*", "meta/*.jsonl", "videos/chunk*"],
+        repo_id=repo_id,
+        revision=branch,
+        repo_type="dataset",
+    )
+    hub_api.create_tag(repo_id, tag=CODEBASE_VERSION, revision=branch, repo_type="dataset")
+
+    LeRobotDataset(repo_id).push_to_hub()
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--repo-id",
+        type=str,
+        required=True,
+        help="Repository identifier on Hugging Face: a community or a user name `/` the name of the dataset "
+        "(e.g. `lerobot/pusht`, `cadene/aloha_sim_insertion_human`).",
+    )
+    parser.add_argument(
+        "--branch",
+        type=str,
+        default=None,
+        help="Repo branch to push your dataset. Defaults to the main branch.",
+    )
+    parser.add_argument(
+        "--data-file-size-in-mb",
+        type=int,
+        default=None,
+        help="File size in MB. Defaults to 100 for data and 500 for videos.",
+    )
+    parser.add_argument(
+        "--video-file-size-in-mb",
+        type=int,
+        default=None,
+        help="File size in MB. Defaults to 100 for data and 500 for videos.",
+    )
+
+    args = parser.parse_args()
+    convert_dataset(**vars(args))

src/lerobot/datasets/video_utils.py

@@ -17,6 +17,8 @@ import glob
 import importlib
 import logging
 import shutil
+import subprocess
+import tempfile
 import warnings
 from dataclasses import dataclass, field
 from pathlib import Path
@@ -29,6 +31,8 @@ import torchvision
 from datasets.features.features import register_feature
 from PIL import Image
 
+from lerobot.datasets.utils import DEFAULT_VIDEO_PATH
+
 
 def get_safe_default_codec():
     if importlib.util.find_spec("torchcodec"):
@@ -263,7 +267,7 @@ def encode_video_frames(
     video_path = Path(video_path)
     imgs_dir = Path(imgs_dir)
 
-    video_path.parent.mkdir(parents=True, exist_ok=overwrite)
+    video_path.parent.mkdir(parents=True, exist_ok=True)
 
     # Encoders/pixel formats incompatibility check
     if (vcodec == "libsvtav1" or vcodec == "hevc") and pix_fmt == "yuv444p":
@@ -273,9 +277,9 @@ def encode_video_frames(
         pix_fmt = "yuv420p"
 
     # Get input frames
-    template = "frame_" + ("[0-9]" * 6) + ".png"
+    template = "frame-" + ("[0-9]" * 6) + ".png"
     input_list = sorted(
-        glob.glob(str(imgs_dir / template)), key=lambda x: int(x.split("_")[-1].split(".")[0])
+        glob.glob(str(imgs_dir / template)), key=lambda x: int(x.split("-")[-1].split(".")[0])
     )
 
     # Define video output frame size (assuming all input frames are the same size)
@@ -300,7 +304,7 @@ def encode_video_frames(
 
     # Set logging level
     if log_level is not None:
-        # "While less efficient, it is generally preferable to modify logging with Python’s logging"
+        # "While less efficient, it is generally preferable to modify logging with Python's logging"
         logging.getLogger("libav").setLevel(log_level)
 
     # Create and open output file (overwrite by default)
@@ -331,6 +335,62 @@ def encode_video_frames(
         raise OSError(f"Video encoding did not work. File not found: {video_path}.")
 
 
+def concat_video_files(paths_to_cat: list[Path], root: Path, video_key: str, chunk_idx: int, file_idx: int):
+    """
+    Concatenate multiple video files into a single video file using ffmpeg.
+
+    This function takes a list of video file paths and concatenates them into a single
+    output video file. It uses ffmpeg's concat demuxer with stream copy mode for fast
+    concatenation without re-encoding.
+
+    Args:
+        paths_to_cat: List of video file paths to concatenate, in order.
+        root: Root directory where temporary files and output will be created.
+        video_key: Video key identifier (e.g., camera name) used in output path.
+        chunk_idx: Chunk index for organizing output files.
+        file_idx: File index within the chunk.
+
+    Note:
+        - Creates a temporary directory for intermediate files that is cleaned up after use.
+        - Uses ffmpeg's concat demuxer which requires all input videos to have the same
+          codec, resolution, and frame rate for proper concatenation.
+        - Output path follows the DEFAULT_VIDEO_PATH pattern with video_key, chunk_idx,
+          and file_idx parameters.
+        - This function uses subprocess to call ffmpeg directly because PyAV doesn't have
+          built-in support for video concatenation. The concat demuxer in ffmpeg handles
+          all the complex timestamp adjustments automatically.
+    """
+
+    tmp_dir = Path(tempfile.mkdtemp(dir=root))
+    path_concat_video_files = tmp_dir / "concat_video_files.txt"
+    with open(path_concat_video_files, "w") as f:
+        for ep_path in paths_to_cat:
+            f.write(f"file '{str(ep_path)}'\n")
+
+    path_tmp_output = tmp_dir / "tmp_output.mp4"
+    command = [
+        "ffmpeg",
+        "-y",
+        "-f",
+        "concat",
+        "-safe",
+        "0",
+        "-i",
+        str(path_concat_video_files),
+        "-c",
+        "copy",
+        str(path_tmp_output),
+    ]
+    subprocess.run(command, check=True)
+
+    output_path = root / DEFAULT_VIDEO_PATH.format(
+        video_key=video_key, chunk_index=chunk_idx, file_index=file_idx
+    )
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+    shutil.move(str(path_tmp_output), str(output_path))
+    shutil.rmtree(str(tmp_dir))
+
+
 @dataclass
 class VideoFrame:
     # TODO(rcadene, lhoestq): move to Hugging Face `datasets` repo
@@ -454,64 +514,23 @@ def get_image_pixel_channels(image: Image):
         raise ValueError("Unknown format")
 
 
-class VideoEncodingManager:
+def get_video_duration_in_s(video_path: Path | str) -> float:
     """
-    Context manager that ensures proper video encoding and data cleanup even if exceptions occur.
-
-    This manager handles:
-    - Batch encoding for any remaining episodes when recording interrupted
-    - Cleaning up temporary image files from interrupted episodes
-    - Removing empty image directories
+    Get the duration of a video file in seconds using PyAV.
 
     Args:
-        dataset: The LeRobotDataset instance
+        video_path: Path to the video file.
+
+    Returns:
+        Duration of the video in seconds.
     """
-
-    def __init__(self, dataset):
-        self.dataset = dataset
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        # Handle any remaining episodes that haven't been batch encoded
-        if self.dataset.episodes_since_last_encoding > 0:
-            if exc_type is not None:
-                logging.info("Exception occurred. Encoding remaining episodes before exit...")
-            else:
-                logging.info("Recording stopped. Encoding remaining episodes...")
-
-            start_ep = self.dataset.num_episodes - self.dataset.episodes_since_last_encoding
-            end_ep = self.dataset.num_episodes
-            logging.info(
-                f"Encoding remaining {self.dataset.episodes_since_last_encoding} episodes, "
-                f"from episode {start_ep} to {end_ep - 1}"
-            )
-            self.dataset.batch_encode_videos(start_ep, end_ep)
-
-        # Clean up episode images if recording was interrupted
-        if exc_type is not None:
-            interrupted_episode_index = self.dataset.num_episodes
-            for key in self.dataset.meta.video_keys:
-                img_dir = self.dataset._get_image_file_path(
-                    episode_index=interrupted_episode_index, image_key=key, frame_index=0
-                ).parent
-                if img_dir.exists():
-                    logging.debug(
-                        f"Cleaning up interrupted episode images for episode {interrupted_episode_index}, camera {key}"
-                    )
-                    shutil.rmtree(img_dir)
-
-        # Clean up any remaining images directory if it's empty
-        img_dir = self.dataset.root / "images"
-        # Check for any remaining PNG files
-        png_files = list(img_dir.rglob("*.png"))
-        if len(png_files) == 0:
-            # Only remove the images directory if no PNG files remain
-            if img_dir.exists():
-                shutil.rmtree(img_dir)
-                logging.debug("Cleaned up empty images directory")
+    with av.open(str(video_path)) as container:
+        # Get the first video stream
+        video_stream = container.streams.video[0]
+        # Calculate duration: stream.duration * stream.time_base gives duration in seconds
+        if video_stream.duration is not None:
+            duration = float(video_stream.duration * video_stream.time_base)
         else:
-            logging.debug(f"Images directory is not empty, containing {len(png_files)} PNG files")
-
-        return False  # Don't suppress the original exception
+            # Fallback to container duration if stream duration is not available
+            duration = float(container.duration / av.time_base)
+    return duration

src/lerobot/envs/configs.py

@@ -161,72 +161,33 @@ class XarmEnv(EnvConfig):
 
 
 @dataclass
-class ImagePreprocessingConfig:
-    crop_params_dict: dict[str, tuple[int, int, int, int]] | None = None
-    resize_size: tuple[int, int] | None = None
+class VideoRecordConfig:
+    """Configuration for video recording in ManiSkill environments."""
+
+    enabled: bool = False
+    record_dir: str = "videos"
+    trajectory_name: str = "trajectory"
 
 
 @dataclass
-class RewardClassifierConfig:
-    """Configuration for reward classification."""
-
-    pretrained_path: str | None = None
-    success_threshold: float = 0.5
-    success_reward: float = 1.0
-
-
-@dataclass
-class InverseKinematicsConfig:
-    """Configuration for inverse kinematics processing."""
-
-    urdf_path: str | None = None
-    target_frame_name: str | None = None
-    end_effector_bounds: dict[str, list[float]] | None = None
-    end_effector_step_sizes: dict[str, float] | None = None
-    max_gripper_pos: float | None = None
-
-
-@dataclass
-class ObservationConfig:
-    """Configuration for observation processing."""
+class EnvTransformConfig:
+    """Configuration for environment wrappers."""
 
+    # ee_action_space_params: EEActionSpaceConfig = field(default_factory=EEActionSpaceConfig)
+    control_mode: str = "gamepad"
+    display_cameras: bool = False
     add_joint_velocity_to_observation: bool = False
     add_current_to_observation: bool = False
     add_ee_pose_to_observation: bool = False
-    display_cameras: bool = False
-
-
-@dataclass
-class GripperConfig:
-    """Configuration for gripper control and penalties."""
-
-    use_gripper: bool = True
-    gripper_penalty: float = 0.0
-    gripper_penalty_in_reward: bool = False
-
-
-@dataclass
-class ResetConfig:
-    """Configuration for environment reset behavior."""
-
+    crop_params_dict: dict[str, tuple[int, int, int, int]] | None = None
+    resize_size: tuple[int, int] | None = None
+    control_time_s: float = 20.0
     fixed_reset_joint_positions: Any | None = None
     reset_time_s: float = 5.0
-    control_time_s: float = 20.0
-    terminate_on_success: bool = True
-    number_of_steps_after_success: int = 0
-
-
-@dataclass
-class HILSerlProcessorConfig:
-    """Configuration for environment processing pipeline."""
-
-    control_mode: str = "gamepad"
-    observation: ObservationConfig = field(default_factory=ObservationConfig)
-    image_preprocessing: ImagePreprocessingConfig = field(default_factory=ImagePreprocessingConfig)
-    gripper: GripperConfig = field(default_factory=GripperConfig)
-    reset: ResetConfig = field(default_factory=ResetConfig)
-    inverse_kinematics: InverseKinematicsConfig = field(default_factory=InverseKinematicsConfig)
-    reward_classifier: RewardClassifierConfig = field(default_factory=RewardClassifierConfig)
+    use_gripper: bool = True
+    gripper_quantization_threshold: float | None = 0.8
+    gripper_penalty: float = 0.0
+    gripper_penalty_in_reward: bool = False
 
 
 @EnvConfig.register_subclass(name="gym_manipulator")
@@ -236,11 +197,77 @@ class HILSerlRobotEnvConfig(EnvConfig):
 
     robot: RobotConfig | None = None
     teleop: TeleoperatorConfig | None = None
-    processor: HILSerlProcessorConfig = field(default_factory=HILSerlProcessorConfig)
-
+    wrapper: EnvTransformConfig | None = None
+    fps: int = 10
     name: str = "real_robot"
+    mode: str | None = None  # Either "record", "replay", None
+    repo_id: str | None = None
+    dataset_root: str | None = None
+    task: str | None = ""
+    num_episodes: int = 10  # only for record mode
+    episode: int = 0
     device: str = "cuda"
+    push_to_hub: bool = True
+    pretrained_policy_name_or_path: str | None = None
+    reward_classifier_pretrained_path: str | None = None
+    # For the reward classifier, to record more positive examples after a success
+    number_of_steps_after_success: int = 0
 
     @property
     def gym_kwargs(self) -> dict:
         return {}
+
+
+@EnvConfig.register_subclass("hil")
+@dataclass
+class HILEnvConfig(EnvConfig):
+    """Configuration for the HIL environment."""
+
+    name: str = "PandaPickCube"
+    task: str | None = "PandaPickCubeKeyboard-v0"
+    use_viewer: bool = True
+    gripper_penalty: float = 0.0
+    use_gamepad: bool = True
+    state_dim: int = 18
+    action_dim: int = 4
+    fps: int = 100
+    episode_length: int = 100
+    video_record: VideoRecordConfig = field(default_factory=VideoRecordConfig)
+    features: dict[str, PolicyFeature] = field(
+        default_factory=lambda: {
+            "action": PolicyFeature(type=FeatureType.ACTION, shape=(4,)),
+            "observation.image": PolicyFeature(type=FeatureType.VISUAL, shape=(3, 128, 128)),
+            "observation.state": PolicyFeature(type=FeatureType.STATE, shape=(18,)),
+        }
+    )
+    features_map: dict[str, str] = field(
+        default_factory=lambda: {
+            "action": ACTION,
+            "observation.image": OBS_IMAGE,
+            "observation.state": OBS_STATE,
+        }
+    )
+    ################# args from hilserlrobotenv
+    reward_classifier_pretrained_path: str | None = None
+    robot_config: RobotConfig | None = None
+    teleop_config: TeleoperatorConfig | None = None
+    wrapper: EnvTransformConfig | None = None
+    mode: str | None = None  # Either "record", "replay", None
+    repo_id: str | None = None
+    dataset_root: str | None = None
+    num_episodes: int = 10  # only for record mode
+    episode: int = 0
+    device: str = "cuda"
+    push_to_hub: bool = True
+    pretrained_policy_name_or_path: str | None = None
+    # For the reward classifier, to record more positive examples after a success
+    number_of_steps_after_success: int = 0
+    ############################
+
+    @property
+    def gym_kwargs(self) -> dict:
+        return {
+            "use_viewer": self.use_viewer,
+            "use_gamepad": self.use_gamepad,
+            "gripper_penalty": self.gripper_penalty,
+        }

src/lerobot/envs/utils.py

@@ -16,8 +16,10 @@
 import warnings
 from typing import Any
 
+import einops
 import gymnasium as gym
 import numpy as np
+import torch
 from torch import Tensor
 
 from lerobot.configs.types import FeatureType, PolicyFeature
@@ -26,40 +28,62 @@ from lerobot.utils.utils import get_channel_first_image_shape
 
 
 def preprocess_observation(observations: dict[str, np.ndarray]) -> dict[str, Tensor]:
+    # TODO(aliberts, rcadene): refactor this to use features from the environment (no hardcoding)
     """Convert environment observation to LeRobot format observation.
-
-    This function uses the new pipeline system internally but maintains
-    backward compatibility with the original interface.
-
     Args:
         observation: Dictionary of observation batches from a Gym vector environment.
     Returns:
         Dictionary of observation batches with keys renamed to LeRobot format and values as tensors.
     """
-    from lerobot.processor import RobotProcessor, TransitionKey, VanillaObservationProcessor
+    # map to expected inputs for the policy
+    return_observations = {}
+    if "pixels" in observations:
+        if isinstance(observations["pixels"], dict):
+            imgs = {f"observation.images.{key}": img for key, img in observations["pixels"].items()}
+        else:
+            imgs = {"observation.image": observations["pixels"]}
 
-    # Create processor with observation processor
-    processor = RobotProcessor([VanillaObservationProcessor()])
+        for imgkey, img in imgs.items():
+            # TODO(aliberts, rcadene): use transforms.ToTensor()?
+            img = torch.from_numpy(img)
 
-    # Create transition dictionary and process
-    transition = {
-        TransitionKey.OBSERVATION: observations,
-        TransitionKey.ACTION: None,
-        TransitionKey.REWARD: None,
-        TransitionKey.DONE: None,
-        TransitionKey.TRUNCATED: None,
-        TransitionKey.INFO: None,
-        TransitionKey.COMPLEMENTARY_DATA: None,
-    }
-    result = processor(transition)
+            # When preprocessing observations in a non-vectorized environment, we need to add a batch dimension.
+            # This is the case for human-in-the-loop RL where there is only one environment.
+            if img.ndim == 3:
+                img = img.unsqueeze(0)
+            # sanity check that images are channel last
+            _, h, w, c = img.shape
+            assert c < h and c < w, f"expect channel last images, but instead got {img.shape=}"
 
-    # Extract and return the processed observation
-    return result[TransitionKey.OBSERVATION]
+            # sanity check that images are uint8
+            assert img.dtype == torch.uint8, f"expect torch.uint8, but instead {img.dtype=}"
+
+            # convert to channel first of type float32 in range [0,1]
+            img = einops.rearrange(img, "b h w c -> b c h w").contiguous()
+            img = img.type(torch.float32)
+            img /= 255
+
+            return_observations[imgkey] = img
+
+    if "environment_state" in observations:
+        env_state = torch.from_numpy(observations["environment_state"]).float()
+        if env_state.dim() == 1:
+            env_state = env_state.unsqueeze(0)
+
+        return_observations["observation.environment_state"] = env_state
+
+    # TODO(rcadene): enable pixels only baseline with `obs_type="pixels"` in environment by removing
+    agent_pos = torch.from_numpy(observations["agent_pos"]).float()
+    if agent_pos.dim() == 1:
+        agent_pos = agent_pos.unsqueeze(0)
+    return_observations["observation.state"] = agent_pos
+
+    return return_observations
 
 
 def env_to_policy_features(env_cfg: EnvConfig) -> dict[str, PolicyFeature]:
     # TODO(aliberts, rcadene): remove this hardcoding of keys and just use the nested keys as is
-    # (need to externalize normalization from policies)
+    # (need to also refactor preprocess_observation and externalize normalization from policies)
     policy_features = {}
     for key, ft in env_cfg.features.items():
         if ft.type is FeatureType.VISUAL:

src/lerobot/find_cameras.py

@@ -20,7 +20,7 @@ Helper to find the camera devices available in your system.
 Example:
 
 ```shell
-python -m lerobot.find_cameras
+lerobot-find-cameras
 ```
 """
 
@@ -286,7 +286,7 @@ def save_images_from_all_cameras(
             print(f"Image capture finished. Images saved to {output_dir}")
 
 
-if __name__ == "__main__":
+def main():
     parser = argparse.ArgumentParser(
         description="Unified camera utility script for listing cameras and capturing images."
     )
@@ -313,3 +313,7 @@ if __name__ == "__main__":
     )
     args = parser.parse_args()
     save_images_from_all_cameras(**vars(args))
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/find_port.py

@@ -18,7 +18,7 @@ Helper to find the USB port associated with your MotorsBus.
 Example:
 
 ```shell
-python -m lerobot.find_port
+lerobot-find-port
 ```
 """
 
@@ -61,5 +61,9 @@ def find_port():
         raise OSError(f"Could not detect the port. More than one port was found ({ports_diff}).")
 
 
-if __name__ == "__main__":
+def main():
     find_port()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/motors/dynamixel/tables.py

@@ -107,6 +107,8 @@ X_SERIES_ENCODINGS_TABLE = {
     "Goal_PWM": X_SERIES_CONTROL_TABLE["Goal_PWM"][1],
     "Goal_Current": X_SERIES_CONTROL_TABLE["Goal_Current"][1],
     "Goal_Velocity": X_SERIES_CONTROL_TABLE["Goal_Velocity"][1],
+    "Goal_Position": X_SERIES_CONTROL_TABLE["Goal_Position"][1],
+    "Present_Position": X_SERIES_CONTROL_TABLE["Present_Position"][1],
     "Present_PWM": X_SERIES_CONTROL_TABLE["Present_PWM"][1],
     "Present_Current": X_SERIES_CONTROL_TABLE["Present_Current"][1],
     "Present_Velocity": X_SERIES_CONTROL_TABLE["Present_Velocity"][1],

src/lerobot/motors/motors_bus.py

@@ -222,7 +222,7 @@ class MotorsBus(abc.ABC):
     A MotorsBus subclass instance requires a port (e.g. `FeetechMotorsBus(port="/dev/tty.usbmodem575E0031751"`)).
     To find the port, you can run our utility script:
     ```bash
-    python -m lerobot.find_port.py
+    lerobot-find-port.py
     >>> Finding all available ports for the MotorsBus.
     >>> ["/dev/tty.usbmodem575E0032081", "/dev/tty.usbmodem575E0031751"]
     >>> Remove the usb cable from your MotorsBus and press Enter when done.
@@ -446,7 +446,7 @@ class MotorsBus(abc.ABC):
         except (FileNotFoundError, OSError, serial.SerialException) as e:
             raise ConnectionError(
                 f"\nCould not connect on port '{self.port}'. Make sure you are using the correct port."
-                "\nTry running `python -m lerobot.find_port`\n"
+                "\nTry running `lerobot-find-port`\n"
             ) from e
 
     @abc.abstractmethod

src/lerobot/policies/act/README.md

@@ -0,0 +1 @@
+../../../../docs/source/policy_act_README.md

src/lerobot/policies/diffusion/README.md

@@ -0,0 +1 @@
+../../../../docs/source/policy_diffusion_README.md

src/lerobot/policies/pi0/modeling_pi0.py

@@ -30,7 +30,7 @@ pip install -e ".[pi0]"
 
 Example of finetuning the pi0 pretrained model (`pi0_base` in `openpi`):
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
 --policy.path=lerobot/pi0 \
 --dataset.repo_id=danaaubakirova/koch_test
 ```
@@ -38,7 +38,7 @@ python -m lerobot.scripts.train \
 Example of finetuning the pi0 neural network with PaliGemma and expert Gemma
 pretrained with VLM default parameters before pi0 finetuning:
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
 --policy.type=pi0 \
 --dataset.repo_id=danaaubakirova/koch_test
 ```

src/lerobot/policies/pi0fast/modeling_pi0fast.py

@@ -25,14 +25,14 @@ Disclaimer: It is not expected to perform as well as the original implementation
 
 Example of finetuning the pi0+FAST pretrained model (`pi0_fast_base` in `openpi`):
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
 --policy.path=lerobot/pi0fast_base \
 --dataset.repo_id=danaaubakirova/koch_test
 ```
 
 Example of training the pi0+FAST neural network with from scratch:
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
 --policy.type=pi0fast \
 --dataset.repo_id=danaaubakirova/koch_test
 ```

src/lerobot/policies/smolvla/README.md

@@ -0,0 +1 @@
+../../../../docs/source/policy_smolvla_README.md

src/lerobot/policies/smolvla/modeling_smolvla.py

@@ -28,7 +28,7 @@ pip install -e ".[smolvla]"
 
 Example of finetuning the smolvla pretrained model (`smolvla_base`):
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
 --policy.path=lerobot/smolvla_base \
 --dataset.repo_id=danaaubakirova/svla_so100_task1_v3 \
 --batch_size=64 \
@@ -38,7 +38,7 @@ python -m lerobot.scripts.train \
 Example of finetuning a smolVLA. SmolVLA is composed of a pretrained VLM,
 and an action expert.
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
 --policy.type=smolvla \
 --dataset.repo_id=danaaubakirova/svla_so100_task1_v3 \
 --batch_size=64 \

src/lerobot/policies/tdmpc/README.md

@@ -0,0 +1 @@
+../../../../docs/source/policy_tdmpc_README.md

src/lerobot/policies/vqbet/README.md

@@ -0,0 +1 @@
+../../../../docs/source/policy_vqbet_README.md

src/lerobot/processor/__init__.py

@@ -15,18 +15,8 @@
 # limitations under the License.
 
 from .device_processor import DeviceProcessor
-from .hil_processor import (
-    GripperPenaltyProcessor,
-    ImageCropResizeProcessor,
-    InterventionActionProcessor,
-    TimeLimitProcessor,
-)
 from .normalize_processor import NormalizerProcessor, UnnormalizerProcessor
-from .observation_processor import (
-    ImageProcessor,
-    StateProcessor,
-    VanillaObservationProcessor,
-)
+from .observation_processor import VanillaObservationProcessor
 from .pipeline import (
     ActionProcessor,
     DoneProcessor,
@@ -42,26 +32,14 @@ from .pipeline import (
     TruncatedProcessor,
 )
 from .rename_processor import RenameProcessor
-from .robot_processor import (
-    InverseKinematicsProcessor,
-    JointVelocityProcessor,
-    MotorCurrentProcessor,
-)
 
 __all__ = [
     "ActionProcessor",
     "DeviceProcessor",
     "DoneProcessor",
     "EnvTransition",
-    "GripperPenaltyProcessor",
     "IdentityProcessor",
-    "ImageCropResizeProcessor",
-    "ImageProcessor",
     "InfoProcessor",
-    "InterventionActionProcessor",
-    "InverseKinematicsProcessor",
-    "JointVelocityProcessor",
-    "MotorCurrentProcessor",
     "NormalizerProcessor",
     "UnnormalizerProcessor",
     "ObservationProcessor",
@@ -70,8 +48,6 @@ __all__ = [
     "RenameProcessor",
     "RewardProcessor",
     "RobotProcessor",
-    "StateProcessor",
-    "TimeLimitProcessor",
     "TransitionKey",
     "TruncatedProcessor",
     "VanillaObservationProcessor",

src/lerobot/processor/device_processor.py

@@ -20,6 +20,7 @@ import torch
 
 from lerobot.configs.types import PolicyFeature
 from lerobot.processor.pipeline import EnvTransition, TransitionKey
+from lerobot.utils.utils import get_safe_torch_device
 
 
 @dataclass
@@ -30,10 +31,11 @@ class DeviceProcessor:
     specified device (CPU or GPU) before they are returned.
     """
 
-    device: str = "cpu"
+    device: torch.device = "cpu"
 
     def __post_init__(self):
-        self.non_blocking = "cuda" in self.device
+        self.device = get_safe_torch_device(self.device)
+        self.non_blocking = "cuda" in str(self.device)
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         # Create a copy of the transition

src/lerobot/processor/hil_processor.py

@@ -1,331 +0,0 @@
-import time
-from dataclasses import dataclass
-from typing import Any
-
-import torch
-import torchvision.transforms.functional as F  # noqa: N812
-
-from lerobot.configs.types import PolicyFeature
-from lerobot.processor.pipeline import EnvTransition, ProcessorStepRegistry, TransitionKey
-
-
-@dataclass
-@ProcessorStepRegistry.register("image_crop_resize_processor")
-class ImageCropResizeProcessor:
-    """Crop and resize image observations."""
-
-    crop_params_dict: dict[str, tuple[int, int, int, int]]
-    resize_size: tuple[int, int] = (128, 128)
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
-        if observation is None:
-            return transition
-
-        if self.resize_size is None and not self.crop_params_dict:
-            return transition
-
-        new_observation = dict(observation)
-
-        # Process all image keys in the observation
-        for key in observation:
-            if "image" not in key:
-                continue
-
-            image = observation[key]
-            device = image.device
-            if device.type == "mps":
-                image = image.cpu()
-            # Crop if crop params are provided for this key
-            if key in self.crop_params_dict:
-                crop_params = self.crop_params_dict[key]
-                image = F.crop(image, *crop_params)
-            # Always resize
-            image = F.resize(image, self.resize_size)
-            image = image.clamp(0.0, 1.0)
-            new_observation[key] = image.to(device)
-
-        new_transition = transition.copy()
-        new_transition[TransitionKey.OBSERVATION] = new_observation
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "crop_params_dict": self.crop_params_dict,
-            "resize_size": self.resize_size,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        pass
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register("time_limit_processor")
-class TimeLimitProcessor:
-    """Track episode time and enforce time limits."""
-
-    max_episode_steps: int
-    current_step: int = 0
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        truncated = transition.get(TransitionKey.TRUNCATED)
-        if truncated is None:
-            return transition
-
-        self.current_step += 1
-        if self.current_step >= self.max_episode_steps:
-            truncated = True
-        new_transition = transition.copy()
-        new_transition[TransitionKey.TRUNCATED] = truncated
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "max_episode_steps": self.max_episode_steps,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        self.current_step = 0
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register("gripper_penalty_processor")
-class GripperPenaltyProcessor:
-    penalty: float = -0.01
-    max_gripper_pos: float = 30.0
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        """Calculate gripper penalty and add to complementary data."""
-        action = transition.get(TransitionKey.ACTION)
-        complementary_data = transition.get(TransitionKey.COMPLEMENTARY_DATA)
-
-        if complementary_data is None or action is None:
-            return transition
-
-        current_gripper_pos = complementary_data.get("raw_joint_positions", None)[-1]
-        if current_gripper_pos is None:
-            return transition
-
-        gripper_action = action[-1].item()
-        gripper_action_normalized = gripper_action / self.max_gripper_pos
-
-        # Normalize gripper state and action
-        gripper_state_normalized = current_gripper_pos / self.max_gripper_pos
-        gripper_action_normalized = gripper_action - 1.0
-
-        # Calculate penalty boolean as in original
-        gripper_penalty_bool = (gripper_state_normalized < 0.5 and gripper_action_normalized > 0.5) or (
-            gripper_state_normalized > 0.75 and gripper_action_normalized < 0.5
-        )
-
-        gripper_penalty = self.penalty * int(gripper_penalty_bool)
-
-        # Add penalty information to complementary data
-        complementary_data = transition.get(TransitionKey.COMPLEMENTARY_DATA, {})
-
-        # Create new complementary data with penalty info
-        new_complementary_data = dict(complementary_data)
-        new_complementary_data["discrete_penalty"] = gripper_penalty
-
-        # Create new transition with updated complementary data
-        new_transition = transition.copy()
-        new_transition[TransitionKey.COMPLEMENTARY_DATA] = new_complementary_data
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "penalty": self.penalty,
-            "max_gripper_pos": self.max_gripper_pos,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        """Reset the processor state."""
-        self.last_gripper_state = None
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register("intervention_action_processor")
-class InterventionActionProcessor:
-    """Handle action intervention based on signals in the transition.
-
-    This processor checks for intervention signals in the transition's complementary data
-    and overrides agent actions when intervention is active.
-    """
-
-    use_gripper: bool = False
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        action = transition.get(TransitionKey.ACTION)
-        if action is None:
-            return transition
-
-        # Get intervention signals from complementary data
-        complementary_data = transition.get(TransitionKey.COMPLEMENTARY_DATA, {})
-        teleop_action = complementary_data.get("teleop_action", {})
-        is_intervention = complementary_data.get("is_intervention", False)
-        terminate_episode = complementary_data.get("terminate_episode", False)
-        success = complementary_data.get("success", False)
-        rerecord_episode = complementary_data.get("rerecord_episode", False)
-
-        new_transition = transition.copy()
-
-        # Override action if intervention is active
-        if is_intervention and teleop_action:
-            # Convert teleop_action dict to tensor format
-            action_list = [
-                teleop_action.get("delta_x", 0.0),
-                teleop_action.get("delta_y", 0.0),
-                teleop_action.get("delta_z", 0.0),
-            ]
-            if self.use_gripper:
-                action_list.append(teleop_action.get("gripper", 1.0))
-
-            teleop_action_tensor = torch.tensor(action_list, dtype=action.dtype, device=action.device)
-            new_transition[TransitionKey.ACTION] = teleop_action_tensor
-
-        # Handle episode termination
-        new_transition[TransitionKey.DONE] = bool(terminate_episode)
-        new_transition[TransitionKey.REWARD] = float(success)
-
-        # Update info with intervention metadata
-        info = new_transition.get(TransitionKey.INFO, {})
-        info["is_intervention"] = is_intervention
-        info["rerecord_episode"] = rerecord_episode
-        info["next.success"] = success if terminate_episode else info.get("next.success", False)
-        new_transition[TransitionKey.INFO] = info
-        new_transition[TransitionKey.COMPLEMENTARY_DATA]["teleop_action"] = new_transition[
-            TransitionKey.ACTION
-        ]
-
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "use_gripper": self.use_gripper,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        pass
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register("reward_classifier_processor")
-class RewardClassifierProcessor:
-    """Apply reward classification to image observations.
-
-    This processor runs a trained reward classifier on image observations
-    to predict rewards and success states, potentially terminating episodes
-    when success is achieved.
-    """
-
-    pretrained_path: str = None
-    device: str = "cpu"
-    success_threshold: float = 0.5
-    success_reward: float = 1.0
-    terminate_on_success: bool = True
-
-    reward_classifier: Any = None
-
-    def __post_init__(self):
-        """Initialize the reward classifier after dataclass initialization."""
-        if self.pretrained_path is not None:
-            from lerobot.policies.sac.reward_model.modeling_classifier import Classifier
-
-            self.reward_classifier = Classifier.from_pretrained(self.pretrained_path)
-            self.reward_classifier.to(self.device)
-            self.reward_classifier.eval()
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
-        if observation is None or self.reward_classifier is None:
-            return transition
-
-        # Extract images from observation
-        images = {key: value for key, value in observation.items() if "image" in key}
-
-        if not images:
-            return transition
-
-        # Run reward classifier
-        start_time = time.perf_counter()
-        with torch.inference_mode():
-            success = self.reward_classifier.predict_reward(images, threshold=self.success_threshold)
-
-        classifier_frequency = 1 / (time.perf_counter() - start_time)
-
-        # Calculate reward and termination
-        reward = transition.get(TransitionKey.REWARD, 0.0)
-        terminated = transition.get(TransitionKey.DONE, False)
-
-        if success == 1.0:
-            reward = self.success_reward
-            if self.terminate_on_success:
-                terminated = True
-
-        # Update transition
-        new_transition = transition.copy()
-        new_transition[TransitionKey.REWARD] = reward
-        new_transition[TransitionKey.DONE] = terminated
-
-        # Update info with classifier frequency
-        info = new_transition.get(TransitionKey.INFO, {})
-        info["reward_classifier_frequency"] = classifier_frequency
-        new_transition[TransitionKey.INFO] = info
-
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "device": self.device,
-            "success_threshold": self.success_threshold,
-            "success_reward": self.success_reward,
-            "terminate_on_success": self.terminate_on_success,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        pass
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features

src/lerobot/processor/normalize_processor.py

@@ -220,7 +220,6 @@ class UnnormalizerProcessor:
     features: dict[str, PolicyFeature]
     norm_map: dict[FeatureType, NormalizationMode]
     stats: dict[str, dict[str, Any]] | None = None
-    eps: float = 1e-8
 
     _tensor_stats: dict[str, dict[str, Tensor]] = field(default_factory=dict, init=False, repr=False)
 
@@ -230,10 +229,8 @@ class UnnormalizerProcessor:
         dataset: LeRobotDataset,
         features: dict[str, PolicyFeature],
         norm_map: dict[FeatureType, NormalizationMode],
-        *,
-        eps: float = 1e-8,
     ) -> UnnormalizerProcessor:
-        return cls(features=features, norm_map=norm_map, stats=dataset.meta.stats, eps=eps)
+        return cls(features=features, norm_map=norm_map, stats=dataset.meta.stats)
 
     def __post_init__(self):
         # Handle deserialization from JSON config
@@ -308,7 +305,6 @@ class UnnormalizerProcessor:
 
     def get_config(self) -> dict[str, Any]:
         return {
-            "eps": self.eps,
             "features": {
                 key: {"type": ft.type.value, "shape": ft.shape} for key, ft in self.features.items()
             },

src/lerobot/processor/observation_processor.py

@@ -13,8 +13,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from dataclasses import dataclass, field
-from typing import Any
+from dataclasses import dataclass
 
 import einops
 import numpy as np
@@ -23,52 +22,27 @@ from torch import Tensor
 
 from lerobot.configs.types import PolicyFeature
 from lerobot.constants import OBS_ENV_STATE, OBS_IMAGE, OBS_IMAGES, OBS_STATE
-from lerobot.processor.pipeline import EnvTransition, ProcessorStepRegistry, TransitionKey
+from lerobot.processor.pipeline import ObservationProcessor, ProcessorStepRegistry
 
 
 @dataclass
-class ImageProcessor:
-    """Process image observations from environment format to policy format.
-
-    Converts images from:
-    - Channel-last (H, W, C) to channel-first (C, H, W)
-    - uint8 [0, 255] to float32 [0, 1]
-    - Adds batch dimension if needed
-    - Handles both single images and dictionaries of images
+@ProcessorStepRegistry.register(name="observation_processor")
+class VanillaObservationProcessor(ObservationProcessor):
     """
+    Processes environment observations into the LeRobot format by handling both images and states.
 
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
+    Image processing:
+        - Converts channel-last (H, W, C) images to channel-first (C, H, W)
+        - Normalizes uint8 images ([0, 255]) to float32 ([0, 1])
+        - Adds a batch dimension if missing
+        - Supports single images and image dictionaries
 
-        if observation is None:
-            return transition
-
-        processed_obs = {}
-
-        # Copy all observations first
-        for key, value in observation.items():
-            processed_obs[key] = value
-
-        # Handle pixels key if present
-        pixels = observation.get("pixels")
-        if pixels is not None:
-            # Remove pixels from processed_obs since we'll replace it with processed images
-            processed_obs.pop("pixels", None)
-            # Determine image mapping
-            if isinstance(pixels, dict):
-                imgs = {f"{OBS_IMAGES}.{key}": img for key, img in pixels.items()}
-            else:
-                imgs = {OBS_IMAGE: pixels}
-
-            # Process each image
-            for imgkey, img in imgs.items():
-                processed_img = self._process_single_image(img)
-                processed_obs[imgkey] = processed_img
-
-        # Return new transition with processed observation
-        new_transition = transition.copy()
-        new_transition[TransitionKey.OBSERVATION] = processed_obs
-        return new_transition
+    State processing:
+        - Maps 'environment_state' to observation.environment_state
+        - Maps 'agent_pos' to observation.state
+        - Converts numpy arrays to tensors
+        - Adds a batch dimension if missing
+    """
 
     def _process_single_image(self, img: np.ndarray) -> Tensor:
         """Process a single image array."""
@@ -95,173 +69,89 @@ class ImageProcessor:
 
         return img_tensor
 
-    def get_config(self) -> dict[str, Any]:
-        """Return configuration for serialization."""
-        return {}
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        """Return state dictionary (empty for this processor)."""
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        """Load state dictionary (no-op for this processor)."""
-        pass
-
-    def reset(self) -> None:
-        """Reset processor state (no-op for this processor)."""
-        pass
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        """Transforms:
-        pixels -> OBS_IMAGE,
-        observation.pixels -> OBS_IMAGE,
-        pixels.<cam> -> OBS_IMAGES.<cam>,
-        observation.pixels.<cam> -> OBS_IMAGES.<cam>
+    def _process_observation(self, observation):
+        """
+        Processes both image and state observations.
         """
-        if "pixels" in features:
-            features[OBS_IMAGE] = features.pop("pixels")
-        if "observation.pixels" in features:
-            features[OBS_IMAGE] = features.pop("observation.pixels")
 
-        prefixes = ("pixels.", "observation.pixels.")
-        for key in list(features.keys()):
-            for p in prefixes:
-                if key.startswith(p):
-                    suffix = key[len(p) :]
-                    features[f"{OBS_IMAGES}.{suffix}"] = features.pop(key)
-                    break
-        return features
+        processed_obs = observation.copy()
 
+        if "pixels" in processed_obs:
+            pixels = processed_obs.pop("pixels")
 
-@dataclass
-class StateProcessor:
-    """Process state observations from environment format to policy format.
+            if isinstance(pixels, dict):
+                imgs = {f"{OBS_IMAGES}.{key}": img for key, img in pixels.items()}
+            else:
+                imgs = {OBS_IMAGE: pixels}
 
-    Handles:
-    - environment_state -> observation.environment_state
-    - agent_pos -> observation.state
-    - Converts numpy arrays to tensors
-    - Adds batch dimension if needed
-    """
+            for imgkey, img in imgs.items():
+                processed_obs[imgkey] = self._process_single_image(img)
 
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
-
-        if observation is None:
-            return transition
-
-        processed_obs = dict(observation)  # Copy existing observations
-
-        # Process environment_state
-        if "environment_state" in observation:
-            env_state = torch.from_numpy(observation["environment_state"]).float()
+        if "environment_state" in processed_obs:
+            env_state_np = processed_obs.pop("environment_state")
+            env_state = torch.from_numpy(env_state_np).float()
             if env_state.dim() == 1:
                 env_state = env_state.unsqueeze(0)
             processed_obs[OBS_ENV_STATE] = env_state
-            # Remove original key
-            del processed_obs["environment_state"]
 
-        # Process agent_pos
-        if "agent_pos" in observation:
-            agent_pos = torch.from_numpy(observation["agent_pos"]).float()
+        if "agent_pos" in processed_obs:
+            agent_pos_np = processed_obs.pop("agent_pos")
+            agent_pos = torch.from_numpy(agent_pos_np).float()
             if agent_pos.dim() == 1:
                 agent_pos = agent_pos.unsqueeze(0)
             processed_obs[OBS_STATE] = agent_pos
-            # Remove original key
-            del processed_obs["agent_pos"]
 
-        # Return new transition with processed observation
-        new_transition = transition.copy()
-        new_transition[TransitionKey.OBSERVATION] = processed_obs
-        return new_transition
+        return processed_obs
 
-    def get_config(self) -> dict[str, Any]:
-        """Return configuration for serialization."""
-        return {}
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        """Return state dictionary (empty for this processor)."""
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        """Load state dictionary (no-op for this processor)."""
-        pass
-
-    def reset(self) -> None:
-        """Reset processor state (no-op for this processor)."""
-        pass
+    def observation(self, observation):
+        return self._process_observation(observation)
 
     def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        """Transforms:
-        environment_state -> OBS_ENV_STATE,
-        agent_pos -> OBS_STATE,
-        observation.environment_state -> OBS_ENV_STATE,
-        observation.agent_pos -> OBS_STATE
+        """Transforms feature keys to a standardized contract.
+
+        This method handles several renaming patterns:
+        - Exact matches (e.g., 'pixels' -> 'OBS_IMAGE').
+        - Prefixed exact matches (e.g., 'observation.pixels' -> 'OBS_IMAGE').
+        - Prefix matches (e.g., 'pixels.cam1' -> 'OBS_IMAGES.cam1').
+        - Prefixed prefix matches (e.g., 'observation.pixels.cam1' -> 'OBS_IMAGES.cam1').
+        - environment_state -> OBS_ENV_STATE,
+        - agent_pos -> OBS_STATE,
+        - observation.environment_state -> OBS_ENV_STATE,
+        - observation.agent_pos -> OBS_STATE
         """
-        pairs = (
-            ("environment_state", OBS_ENV_STATE),
-            ("agent_pos", OBS_STATE),
-        )
-        for old, new in pairs:
-            if old in features:
-                features[new] = features.pop(old)
-            prefixed = f"observation.{old}"
-            if prefixed in features:
-                features[new] = features.pop(prefixed)
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register(name="observation_processor")
-class VanillaObservationProcessor:
-    """Complete observation processor that combines image and state processing.
-
-    This processor replicates the functionality of the original preprocess_observation
-    function but in a modular, composable way that fits into the pipeline architecture.
-    """
-
-    image_processor: ImageProcessor = field(default_factory=ImageProcessor)
-    state_processor: StateProcessor = field(default_factory=StateProcessor)
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        # First process images
-        transition = self.image_processor(transition)
-        # Then process state
-        transition = self.state_processor(transition)
-        return transition
-
-    def get_config(self) -> dict[str, Any]:
-        """Return configuration for serialization."""
-        return {
-            "image_processor": self.image_processor.get_config(),
-            "state_processor": self.state_processor.get_config(),
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        """Return state dictionary."""
-        state = {}
-        state.update({f"image_processor.{k}": v for k, v in self.image_processor.state_dict().items()})
-        state.update({f"state_processor.{k}": v for k, v in self.state_processor.state_dict().items()})
-        return state
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        """Load state dictionary."""
-        image_state = {
-            k.replace("image_processor.", ""): v for k, v in state.items() if k.startswith("image_processor.")
-        }
-        state_state = {
-            k.replace("state_processor.", ""): v for k, v in state.items() if k.startswith("state_processor.")
-        }
-
-        self.image_processor.load_state_dict(image_state)
-        self.state_processor.load_state_dict(state_state)
-
-    def reset(self) -> None:
-        """Reset processor state."""
-        self.image_processor.reset()
-        self.state_processor.reset()
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        features = self.image_processor.feature_contract(features)
-        features = self.state_processor.feature_contract(features)
+        exact_pairs = {
+            "pixels": OBS_IMAGE,
+            "environment_state": OBS_ENV_STATE,
+            "agent_pos": OBS_STATE,
+        }
+
+        prefix_pairs = {
+            "pixels.": f"{OBS_IMAGES}.",
+        }
+
+        for key in list(features.keys()):
+            matched_prefix = False
+            for old_prefix, new_prefix in prefix_pairs.items():
+                prefixed_old = f"observation.{old_prefix}"
+                if key.startswith(prefixed_old):
+                    suffix = key[len(prefixed_old) :]
+                    features[f"{new_prefix}{suffix}"] = features.pop(key)
+                    matched_prefix = True
+                    break
+
+                if key.startswith(old_prefix):
+                    suffix = key[len(old_prefix) :]
+                    features[f"{new_prefix}{suffix}"] = features.pop(key)
+                    matched_prefix = True
+                    break
+
+            if matched_prefix:
+                continue
+
+            for old, new in exact_pairs.items():
+                if key == old or key == f"observation.{old}":
+                    if key in features:
+                        features[new] = features.pop(key)
+                        break
+
         return features

src/lerobot/processor/pipeline.py

@@ -31,12 +31,12 @@ from huggingface_hub.errors import HfHubHTTPError
 from safetensors.torch import load_file, save_file
 
 from lerobot.configs.types import PolicyFeature
-from lerobot.utils.utils import get_safe_torch_device
 
 
 class TransitionKey(str, Enum):
     """Keys for accessing EnvTransition dictionary components."""
 
+    # TODO(Steven): Use consts
     OBSERVATION = "observation"
     ACTION = "action"
     REWARD = "reward"
@@ -46,19 +46,18 @@ class TransitionKey(str, Enum):
     COMPLEMENTARY_DATA = "complementary_data"
 
 
-class EnvTransition(TypedDict, total=False):
-    """Environment transition data structure.
-
-    All fields are optional (total=False) to allow flexible usage.
-    """
-
-    observation: dict[str, Any] | None
-    action: Any | torch.Tensor | None
-    reward: float | torch.Tensor | None
-    done: bool | torch.Tensor | None
-    truncated: bool | torch.Tensor | None
-    info: dict[str, Any] | None
-    complementary_data: dict[str, Any] | None
+EnvTransition = TypedDict(
+    "EnvTransition",
+    {
+        TransitionKey.OBSERVATION.value: dict[str, Any] | None,
+        TransitionKey.ACTION.value: Any | torch.Tensor | None,
+        TransitionKey.REWARD.value: float | torch.Tensor | None,
+        TransitionKey.DONE.value: bool | torch.Tensor | None,
+        TransitionKey.TRUNCATED.value: bool | torch.Tensor | None,
+        TransitionKey.INFO.value: dict[str, Any] | None,
+        TransitionKey.COMPLEMENTARY_DATA.value: dict[str, Any] | None,
+    },
+)
 
 
 class ProcessorStepRegistry:
@@ -136,8 +135,8 @@ class ProcessorStepRegistry:
 class ProcessorStep(Protocol):
     """Structural typing interface for a single processor step.
 
-    A step is any callable accepting a full `EnvTransition` tuple and
-    returning a (possibly modified) tuple of the same structure. Implementers
+    A step is any callable accepting a full `EnvTransition` dict and
+    returning a (possibly modified) dict of the same structure. Implementers
     are encouraged—but not required—to expose the optional helper methods
     listed below. When present, these hooks let `RobotProcessor`
     automatically serialise the step's configuration and learnable state using
@@ -255,24 +254,22 @@ class RobotProcessor(ModelHubMixin):
     Composable, debuggable post-processing processor for robot transitions.
 
     The class orchestrates an ordered collection of small, functional transforms—steps—executed
-    left-to-right on each incoming `EnvTransition`. It can process both `EnvTransition` tuples
+    left-to-right on each incoming `EnvTransition`. It can process both `EnvTransition` dicts
     and batch dictionaries, automatically converting between formats as needed.
 
     Args:
         steps: Ordered list of processing steps executed on every call. Defaults to empty list.
         name: Human-readable identifier that is persisted inside the JSON config.
             Defaults to "RobotProcessor".
-        seed: Global seed forwarded to steps that choose to consume it. Defaults to None.
-        to_transition: Function to convert batch dict to EnvTransition tuple.
+        to_transition: Function to convert batch dict to EnvTransition dict.
             Defaults to _default_batch_to_transition.
-        to_output: Function to convert EnvTransition tuple to the desired output format.
-            Usually it is a batch dict or EnvTransition tuple.
+        to_output: Function to convert EnvTransition dict to the desired output format.
+            Usually it is a batch dict or EnvTransition dict.
             Defaults to _default_transition_to_batch.
         before_step_hooks: List of hooks called before each step. Each hook receives the step
             index and transition, and can optionally return a modified transition.
         after_step_hooks: List of hooks called after each step. Each hook receives the step
             index and transition, and can optionally return a modified transition.
-        reset_hooks: List of hooks called during processor reset.
 
     Hook Semantics:
         - Hooks are executed sequentially in the order they were registered. There is no way to
@@ -284,11 +281,13 @@ class RobotProcessor(ModelHubMixin):
         - Hooks should generally be stateless to maintain predictable behavior. If you need stateful
           processing, consider implementing a proper ProcessorStep instead.
         - To remove hooks, use the unregister methods. To remove steps, you must create a new pipeline.
+        - Hooks ALWAYS receive transitions in EnvTransition format, regardless of the input format
+          passed to __call__. This ensures consistent hook behavior whether processing batch dicts
+          or EnvTransition objects.
     """
 
     steps: Sequence[ProcessorStep] = field(default_factory=list)
     name: str = "RobotProcessor"
-    seed: int | None = None
 
     to_transition: Callable[[dict[str, Any]], EnvTransition] = field(
         default_factory=lambda: _default_batch_to_transition, repr=False
@@ -301,7 +300,6 @@ class RobotProcessor(ModelHubMixin):
     # Hooks do not modify transitions - they are called for logging, debugging, or monitoring purposes
     before_step_hooks: list[Callable[[int, EnvTransition], None]] = field(default_factory=list, repr=False)
     after_step_hooks: list[Callable[[int, EnvTransition], None]] = field(default_factory=list, repr=False)
-    reset_hooks: list[Callable[[], None]] = field(default_factory=list, repr=False)
 
     def __call__(self, data: EnvTransition | dict[str, Any]):
         """Process data through all steps.
@@ -321,22 +319,30 @@ class RobotProcessor(ModelHubMixin):
         Raises:
             ValueError: If the transition is not a valid EnvTransition format.
         """
-        iterator = self.step_through(data)
-        current_result = next(iterator)  # Get initial state
+        # Check if we need to convert back to batch format at the end
+        _, called_with_batch = self._prepare_transition(data)
 
-        # Process through all steps with hooks
-        for idx, step_result in enumerate(iterator):
-            # Apply before hooks
+        # Use step_through to get the iterator
+        step_iterator = self.step_through(data)
+
+        # Get initial state (before any steps)
+        current_transition = next(step_iterator)
+
+        # Process each step with hooks
+        for idx, next_transition in enumerate(step_iterator):
+            # Apply before hooks with current state (before step execution)
             for hook in self.before_step_hooks:
-                _ = hook(idx, step_result)
+                hook(idx, current_transition)
 
-            # Apply after hooks
+            # Move to next state (after step execution)
+            current_transition = next_transition
+
+            # Apply after hooks with updated state
             for hook in self.after_step_hooks:
-                _ = hook(idx, step_result)
+                hook(idx, current_transition)
 
-            current_result = step_result
-
-        return current_result
+        # Convert back to original format if needed
+        return self.to_output(current_transition) if called_with_batch else current_transition
 
     def _prepare_transition(self, data: EnvTransition | dict[str, Any]) -> tuple[EnvTransition, bool]:
         """Prepare and validate transition data for processing.
@@ -366,64 +372,48 @@ class RobotProcessor(ModelHubMixin):
 
         return transition, called_with_batch
 
-    def step_through(self, data: EnvTransition | dict[str, Any]) -> Iterable[EnvTransition | dict[str, Any]]:
+    def step_through(self, data: EnvTransition | dict[str, Any]) -> Iterable[EnvTransition]:
         """Yield the intermediate results after each processor step.
 
         This is a low-level method that does NOT apply hooks. It simply executes each step
         and yields the intermediate results. This allows users to debug the pipeline or
         apply custom logic between steps if needed.
 
-        Like __call__, this method accepts either EnvTransition dicts or batch dictionaries
-        and preserves the input format in the yielded results.
+        Note: This method always yields EnvTransition objects regardless of input format.
+        If you need the results in the original input format, you'll need to convert them
+        using `to_output()`.
 
         Args:
             data: Either an EnvTransition dict or a batch dictionary to process.
 
         Yields:
-            The intermediate results after each step, in the same format as the input.
+            The intermediate EnvTransition results after each step.
         """
-        transition, called_with_batch = self._prepare_transition(data)
+        transition, _ = self._prepare_transition(data)
 
         # Yield initial state
-        yield self.to_output(transition) if called_with_batch else transition
+        yield transition
 
         # Process each step WITHOUT hooks (low-level method)
         for processor_step in self.steps:
             transition = processor_step(transition)
-            yield self.to_output(transition) if called_with_batch else transition
+            yield transition
 
-    def _save_pretrained(self, destination_path: str, **kwargs):
+    def _save_pretrained(self, save_directory: Path, **kwargs):
         """Internal save method for ModelHubMixin compatibility."""
         # Extract config_filename from kwargs if provided
         config_filename = kwargs.pop("config_filename", None)
-        self.save_pretrained(destination_path, config_filename=config_filename)
+        self.save_pretrained(save_directory, config_filename=config_filename)
 
-    def _generate_model_card(self, destination_path: str) -> None:
-        """Generate README.md from the RobotProcessor model card template."""
-        # Read the template
-        template_path = Path(__file__).parent.parent / "templates" / "robotprocessor_modelcard_template.md"
-
-        if not template_path.exists():
-            # Fallback: if template doesn't exist, skip model card generation
-            return
-
-        with open(template_path) as f:
-            model_card_content = f.read()
-
-        # Write the README.md
-        readme_path = os.path.join(destination_path, "README.md")
-        with open(readme_path, "w") as f:
-            f.write(model_card_content)
-
-    def save_pretrained(self, destination_path: str, config_filename: str | None = None, **kwargs):
-        """Serialize the processor definition and parameters to *destination_path*.
+    def save_pretrained(self, save_directory: str | Path, config_filename: str | None = None, **kwargs):
+        """Serialize the processor definition and parameters to *save_directory*.
 
         Args:
-            destination_path: Directory where the processor will be saved.
+            save_directory: Directory where the processor will be saved.
             config_filename: Optional custom config filename. If not provided, defaults to
                 "{self.name}.json" where self.name is sanitized for filesystem compatibility.
         """
-        os.makedirs(destination_path, exist_ok=True)
+        os.makedirs(str(save_directory), exist_ok=True)
 
         # Sanitize processor name for use in filenames
         import re
@@ -437,7 +427,6 @@ class RobotProcessor(ModelHubMixin):
 
         config: dict[str, Any] = {
             "name": self.name,
-            "seed": self.seed,
             "steps": [],
         }
 
@@ -445,16 +434,15 @@ class RobotProcessor(ModelHubMixin):
             # Check if step was registered
             registry_name = getattr(processor_step.__class__, "_registry_name", None)
 
+            step_entry: dict[str, Any] = {}
             if registry_name:
                 # Use registry name for registered steps
-                step_entry: dict[str, Any] = {
-                    "registry_name": registry_name,
-                }
+                step_entry["registry_name"] = registry_name
             else:
                 # Fall back to full module path for unregistered steps
-                step_entry: dict[str, Any] = {
-                    "class": f"{processor_step.__class__.__module__}.{processor_step.__class__.__name__}",
-                }
+                step_entry["class"] = (
+                    f"{processor_step.__class__.__module__}.{processor_step.__class__.__name__}"
+                )
 
             if hasattr(processor_step, "get_config"):
                 step_entry["config"] = processor_step.get_config()
@@ -481,43 +469,34 @@ class RobotProcessor(ModelHubMixin):
                     else:
                         state_filename = f"{sanitized_name}_step_{step_index}.safetensors"
 
-                    save_file(cloned_state, os.path.join(destination_path, state_filename))
+                    save_file(cloned_state, os.path.join(str(save_directory), state_filename))
                     step_entry["state_file"] = state_filename
 
             config["steps"].append(step_entry)
 
-        with open(os.path.join(destination_path, config_filename), "w") as file_pointer:
+        with open(os.path.join(str(save_directory), config_filename), "w") as file_pointer:
             json.dump(config, file_pointer, indent=2)
 
-        # Generate README.md from template
-        self._generate_model_card(destination_path)
-
-    def to(self, device: str | torch.device):
-        """Move all tensor states inside each step to device and return self.
-
-        Uses a generic mechanism: fetch each step's state dict, move every tensor
-        to the target device, and reload it. Only works for steps that implement
-        both state_dict() and load_state_dict() methods.
-        """
-        device = get_safe_torch_device(device)
-
-        for step in self.steps:
-            if hasattr(step, "state_dict") and hasattr(step, "load_state_dict"):
-                state = step.state_dict()
-                if state:  # Only process if there's actual state
-                    moved_state = {k: v.to(device) for k, v in state.items()}
-                    step.load_state_dict(moved_state)
-
-        return self
-
     @classmethod
     def from_pretrained(
-        cls, source: str, *, config_filename: str | None = None, overrides: dict[str, Any] | None = None
+        cls,
+        pretrained_model_name_or_path: str | Path,
+        *,
+        force_download: bool = False,
+        resume_download: bool | None = None,
+        proxies: dict[str, str] | None = None,
+        token: str | bool | None = None,
+        cache_dir: str | Path | None = None,
+        local_files_only: bool = False,
+        revision: str | None = None,
+        config_filename: str | None = None,
+        overrides: dict[str, Any] | None = None,
+        **kwargs,
     ) -> RobotProcessor:
         """Load a serialized processor from source (local path or Hugging Face Hub identifier).
 
         Args:
-            source: Local path to a saved processor directory or Hugging Face Hub identifier
+            pretrained_model_name_or_path: Local path to a saved processor directory or Hugging Face Hub identifier
                 (e.g., "username/processor-name").
             config_filename: Optional specific config filename to load. If not provided, will:
                 - For local paths: look for any .json file in the directory (error if multiple found)
@@ -570,6 +549,9 @@ class RobotProcessor(ModelHubMixin):
             )
             ```
         """
+        # Use the local variable name 'source' for clarity
+        source = str(pretrained_model_name_or_path)
+
         if Path(source).is_dir():
             # Local path - use it directly
             base_path = Path(source)
@@ -587,7 +569,7 @@ class RobotProcessor(ModelHubMixin):
                 config_filename = json_files[0].name
 
             with open(base_path / config_filename) as file_pointer:
-                config: dict[str, Any] = json.load(file_pointer)
+                loaded_config: dict[str, Any] = json.load(file_pointer)
         else:
             # Hugging Face Hub - download all required files
             if config_filename is None:
@@ -601,7 +583,18 @@ class RobotProcessor(ModelHubMixin):
                 config_path = None
                 for name in common_names:
                     try:
-                        config_path = hf_hub_download(source, name, repo_type="model")
+                        config_path = hf_hub_download(
+                            source,
+                            name,
+                            repo_type="model",
+                            force_download=force_download,
+                            resume_download=resume_download,
+                            proxies=proxies,
+                            token=token,
+                            cache_dir=cache_dir,
+                            local_files_only=local_files_only,
+                            revision=revision,
+                        )
                         config_filename = name
                         break
                     except (FileNotFoundError, OSError, HfHubHTTPError):
@@ -617,10 +610,21 @@ class RobotProcessor(ModelHubMixin):
                     )
             else:
                 # Download specific config file
-                config_path = hf_hub_download(source, config_filename, repo_type="model")
+                config_path = hf_hub_download(
+                    source,
+                    config_filename,
+                    repo_type="model",
+                    force_download=force_download,
+                    resume_download=resume_download,
+                    proxies=proxies,
+                    token=token,
+                    cache_dir=cache_dir,
+                    local_files_only=local_files_only,
+                    revision=revision,
+                )
 
             with open(config_path) as file_pointer:
-                config: dict[str, Any] = json.load(file_pointer)
+                loaded_config = json.load(file_pointer)
 
             # Store downloaded files in the same directory as the config
             base_path = Path(config_path).parent
@@ -633,7 +637,7 @@ class RobotProcessor(ModelHubMixin):
         override_keys = set(overrides.keys())
 
         steps: list[ProcessorStep] = []
-        for step_entry in config["steps"]:
+        for step_entry in loaded_config["steps"]:
             # Check if step uses registry name or module path
             if "registry_name" in step_entry:
                 # Load from registry
@@ -685,7 +689,18 @@ class RobotProcessor(ModelHubMixin):
                     state_path = str(base_path / step_entry["state_file"])
                 else:
                     # Hugging Face Hub - download the state file
-                    state_path = hf_hub_download(source, step_entry["state_file"], repo_type="model")
+                    state_path = hf_hub_download(
+                        source,
+                        step_entry["state_file"],
+                        repo_type="model",
+                        force_download=force_download,
+                        resume_download=resume_download,
+                        proxies=proxies,
+                        token=token,
+                        cache_dir=cache_dir,
+                        local_files_only=local_files_only,
+                        revision=revision,
+                    )
 
                 step_instance.load_state_dict(load_file(state_path))
 
@@ -694,7 +709,7 @@ class RobotProcessor(ModelHubMixin):
         # Check for unused override keys
         if override_keys:
             available_keys = []
-            for step_entry in config["steps"]:
+            for step_entry in loaded_config["steps"]:
                 if "registry_name" in step_entry:
                     available_keys.append(step_entry["registry_name"])
                 else:
@@ -708,7 +723,7 @@ class RobotProcessor(ModelHubMixin):
                 f"Make sure override keys match exact step class names or registry names."
             )
 
-        return cls(steps, config.get("name", "RobotProcessor"), config.get("seed"))
+        return cls(steps, loaded_config.get("name", "RobotProcessor"))
 
     def __len__(self) -> int:
         """Return the number of steps in the processor."""
@@ -720,7 +735,7 @@ class RobotProcessor(ModelHubMixin):
         * ``slice`` – returns a new RobotProcessor with the sliced steps.
         """
         if isinstance(idx, slice):
-            return RobotProcessor(self.steps[idx], self.name, self.seed)
+            return RobotProcessor(self.steps[idx], self.name)
         return self.steps[idx]
 
     def register_before_step_hook(self, fn: Callable[[int, EnvTransition], None]):
@@ -763,71 +778,11 @@ class RobotProcessor(ModelHubMixin):
                 f"Hook {fn} not found in after_step_hooks. Make sure to pass the exact same function reference."
             ) from None
 
-    def register_reset_hook(self, fn: Callable[[], None]):
-        """Attach fn to be executed when reset is called."""
-        self.reset_hooks.append(fn)
-
-    def unregister_reset_hook(self, fn: Callable[[], None]):
-        """Remove a previously registered reset hook.
-
-        Args:
-            fn: The exact function reference that was registered. Must be the same object.
-
-        Raises:
-            ValueError: If the hook is not found in the registered hooks.
-        """
-        try:
-            self.reset_hooks.remove(fn)
-        except ValueError:
-            raise ValueError(
-                f"Hook {fn} not found in reset_hooks. Make sure to pass the exact same function reference."
-            ) from None
-
     def reset(self):
         """Clear state in every step that implements ``reset()`` and fire registered hooks."""
         for step in self.steps:
             if hasattr(step, "reset"):
                 step.reset()  # type: ignore[attr-defined]
-        for fn in self.reset_hooks:
-            fn()
-
-    def profile_steps(
-        self, transition: EnvTransition, num_runs: int = 100, warmup_runs: int = 5
-    ) -> dict[str, float]:
-        """Profile the execution time of each step for performance optimization."""
-        import copy
-        import time
-
-        profile_results = {}
-
-        # Make a copy to avoid altering the original transition
-        transition_copy = copy.deepcopy(transition)
-
-        # Get intermediate transitions for each step using step_through
-        intermediate_transitions = list(self.step_through(transition_copy))
-
-        for idx, processor_step in enumerate(self.steps):
-            step_name = f"step_{idx}_{processor_step.__class__.__name__}"
-
-            # Use the appropriate input transition for this step
-            input_transition = intermediate_transitions[idx]
-
-            # Warm up - copy transition for each run to ensure consistent conditions
-            for _ in range(warmup_runs):
-                transition_copy = copy.deepcopy(input_transition)
-                _ = processor_step(transition_copy)
-
-            # Time the step - copy transition for each run to ensure consistent conditions
-            start_time = time.perf_counter()
-            for _ in range(num_runs):
-                transition_copy = copy.deepcopy(input_transition)
-                _ = processor_step(transition_copy)
-            end_time = time.perf_counter()
-
-            avg_time = (end_time - start_time) / num_runs * 1000  # Convert to milliseconds
-            profile_results[step_name] = avg_time
-
-        return profile_results
 
     def __repr__(self) -> str:
         """Return a readable string representation of the processor."""
@@ -844,9 +799,6 @@ class RobotProcessor(ModelHubMixin):
 
         parts = [f"name='{self.name}'", steps_repr]
 
-        if self.seed is not None:
-            parts.append(f"seed={self.seed}")
-
         return f"RobotProcessor({', '.join(parts)})"
 
     def __post_init__(self):
@@ -911,12 +863,30 @@ class ObservationProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         observation = transition.get(TransitionKey.OBSERVATION)
+        if observation is None:
+            return transition
+
         processed_observation = self.observation(observation)
         # Create a new transition dict with the processed observation
         new_transition = transition.copy()
         new_transition[TransitionKey.OBSERVATION] = processed_observation
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class ActionProcessor:
     """Base class for processors that modify only the action component of a transition.
@@ -953,12 +923,30 @@ class ActionProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         action = transition.get(TransitionKey.ACTION)
+        if action is None:
+            return transition
+
         processed_action = self.action(action)
         # Create a new transition dict with the processed action
         new_transition = transition.copy()
         new_transition[TransitionKey.ACTION] = processed_action
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class RewardProcessor:
     """Base class for processors that modify only the reward component of a transition.
@@ -994,12 +982,30 @@ class RewardProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         reward = transition.get(TransitionKey.REWARD)
+        if reward is None:
+            return transition
+
         processed_reward = self.reward(reward)
         # Create a new transition dict with the processed reward
         new_transition = transition.copy()
         new_transition[TransitionKey.REWARD] = processed_reward
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class DoneProcessor:
     """Base class for processors that modify only the done flag of a transition.
@@ -1040,12 +1046,30 @@ class DoneProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         done = transition.get(TransitionKey.DONE)
+        if done is None:
+            return transition
+
         processed_done = self.done(done)
         # Create a new transition dict with the processed done flag
         new_transition = transition.copy()
         new_transition[TransitionKey.DONE] = processed_done
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class TruncatedProcessor:
     """Base class for processors that modify only the truncated flag of a transition.
@@ -1082,12 +1106,30 @@ class TruncatedProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         truncated = transition.get(TransitionKey.TRUNCATED)
+        if truncated is None:
+            return transition
+
         processed_truncated = self.truncated(truncated)
         # Create a new transition dict with the processed truncated flag
         new_transition = transition.copy()
         new_transition[TransitionKey.TRUNCATED] = processed_truncated
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class InfoProcessor:
     """Base class for processors that modify only the info dictionary of a transition.
@@ -1129,12 +1171,30 @@ class InfoProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         info = transition.get(TransitionKey.INFO)
+        if info is None:
+            return transition
+
         processed_info = self.info(info)
         # Create a new transition dict with the processed info
         new_transition = transition.copy()
         new_transition[TransitionKey.INFO] = processed_info
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class ComplementaryDataProcessor:
     """Base class for processors that modify only the complementary data of a transition.
@@ -1157,12 +1217,30 @@ class ComplementaryDataProcessor:
 
     def __call__(self, transition: EnvTransition) -> EnvTransition:
         complementary_data = transition.get(TransitionKey.COMPLEMENTARY_DATA)
+        if complementary_data is None:
+            return transition
+
         processed_complementary_data = self.complementary_data(complementary_data)
         # Create a new transition dict with the processed complementary data
         new_transition = transition.copy()
         new_transition[TransitionKey.COMPLEMENTARY_DATA] = processed_complementary_data
         return new_transition
 
+    def get_config(self) -> dict[str, Any]:
+        return {}
+
+    def state_dict(self) -> dict[str, torch.Tensor]:
+        return {}
+
+    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
+        pass
+
+    def reset(self) -> None:
+        pass
+
+    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
+        return features
+
 
 class IdentityProcessor:
     """Identity processor that does nothing."""

src/lerobot/processor/rename_processor.py

@@ -16,24 +16,21 @@
 from dataclasses import dataclass, field
 from typing import Any
 
-import torch
-
 from lerobot.configs.types import PolicyFeature
-from lerobot.processor.pipeline import EnvTransition, ProcessorStepRegistry, TransitionKey
+from lerobot.processor.pipeline import (
+    ObservationProcessor,
+    ProcessorStepRegistry,
+)
 
 
 @dataclass
 @ProcessorStepRegistry.register(name="rename_processor")
-class RenameProcessor:
+class RenameProcessor(ObservationProcessor):
     """Rename processor that renames keys in the observation."""
 
     rename_map: dict[str, str] = field(default_factory=dict)
 
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
-        if observation is None:
-            return transition
-
+    def observation(self, observation):
         processed_obs = {}
         for key, value in observation.items():
             if key in self.rename_map:
@@ -41,20 +38,11 @@ class RenameProcessor:
             else:
                 processed_obs[key] = value
 
-        # Create a new transition with the renamed observation
-        new_transition = transition.copy()
-        new_transition[TransitionKey.OBSERVATION] = processed_obs
-        return new_transition
+        return processed_obs
 
     def get_config(self) -> dict[str, Any]:
         return {"rename_map": self.rename_map}
 
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
     def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
         """Transforms:
         - Each key in the observation that appears in `rename_map` is renamed to its value.

src/lerobot/processor/robot_processor.py

@@ -1,245 +0,0 @@
-from dataclasses import dataclass, field
-from typing import Any
-
-import gymnasium as gym
-import numpy as np
-import torch
-
-from lerobot.configs.types import PolicyFeature
-from lerobot.model.kinematics import RobotKinematics
-from lerobot.processor.pipeline import EnvTransition, ProcessorStepRegistry, TransitionKey
-
-
-@dataclass
-@ProcessorStepRegistry.register("joint_velocity_processor")
-class JointVelocityProcessor:
-    """Add joint velocity information to observations.
-
-    Computes joint velocities by tracking changes in joint positions over time.
-    """
-
-    joint_velocity_limits: float = 100.0
-    dt: float = 1.0 / 10
-
-    last_joint_positions: torch.Tensor | None = None
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
-        if observation is None:
-            return transition
-
-        # Get current joint positions (assuming they're in observation.state)
-        current_positions = observation.get("observation.state")
-        if current_positions is None:
-            return transition
-
-        # Initialize last joint positions if not already set
-        if self.last_joint_positions is None:
-            self.last_joint_positions = current_positions.clone()
-
-        # Compute velocities
-        joint_velocities = (current_positions - self.last_joint_positions) / self.dt
-        self.last_joint_positions = current_positions.clone()
-
-        # Extend observation with velocities
-        extended_state = torch.cat([current_positions, joint_velocities], dim=-1)
-
-        # Create new observation dict
-        new_observation = dict(observation)
-        new_observation["observation.state"] = extended_state
-
-        # Return new transition
-        new_transition = transition.copy()
-        new_transition[TransitionKey.OBSERVATION] = new_observation
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "joint_velocity_limits": self.joint_velocity_limits,
-            "dt": self.dt,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        self.last_joint_positions = None
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register("current_processor")
-class MotorCurrentProcessor:
-    """Add motor current information to observations."""
-
-    env: gym.Env = None
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        observation = transition.get(TransitionKey.OBSERVATION)
-        if observation is None:
-            return transition
-
-        # Get current values from complementary_data (where robot state would be stored)
-        present_current_dict = self.env.unwrapped.robot.bus.sync_read("Present_Current")
-        motor_currents = torch.tensor(
-            [present_current_dict[name] for name in self.env.unwrapped.robot.bus.motors],
-            dtype=torch.float32,
-        ).unsqueeze(0)
-
-        current_state = observation.get("observation.state")
-        if current_state is None:
-            return transition
-
-        extended_state = torch.cat([current_state, motor_currents], dim=-1)
-
-        # Create new observation dict
-        new_observation = dict(observation)
-        new_observation["observation.state"] = extended_state
-
-        # Return new transition
-        new_transition = transition.copy()
-        new_transition[TransitionKey.OBSERVATION] = new_observation
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {}
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        pass
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features
-
-
-@dataclass
-@ProcessorStepRegistry.register("inverse_kinematics_processor")
-class InverseKinematicsProcessor:
-    """Convert end-effector space actions to joint space using inverse kinematics.
-
-    This processor transforms delta commands in end-effector space (delta_x, delta_y, delta_z)
-    to joint space commands using forward and inverse kinematics. It maintains the current
-    end-effector pose and joint positions to compute the transformations.
-    """
-
-    urdf_path: str
-    target_frame_name: str = "gripper_link"
-    end_effector_step_sizes: dict[str, float] = field(default_factory=lambda: {"x": 1.0, "y": 1.0, "z": 1.0})
-    end_effector_bounds: dict[str, list[float]] | None = None
-    max_gripper_pos: float = 30.0
-
-    # State tracking
-    current_ee_pos: np.ndarray | None = field(default=None, init=False, repr=False)
-    current_joint_pos: np.ndarray | None = field(default=None, init=False, repr=False)
-    kinematics: RobotKinematics | None = field(default=None, init=False, repr=False)
-
-    def __post_init__(self):
-        """Initialize the kinematics module after dataclass initialization."""
-        if self.urdf_path:
-            self.kinematics = RobotKinematics(
-                urdf_path=self.urdf_path,
-                target_frame_name=self.target_frame_name,
-            )
-
-    def __call__(self, transition: EnvTransition) -> EnvTransition:
-        action = transition.get(TransitionKey.ACTION)
-        if action is None:
-            return transition
-
-        action_np = action.detach().cpu().numpy().squeeze()
-
-        complementary_data = transition.get(TransitionKey.COMPLEMENTARY_DATA, {})
-        raw_joint_positions = complementary_data.get("raw_joint_positions")
-        current_gripper_pos = raw_joint_positions[-1]
-        if self.current_joint_pos is None:
-            self.current_joint_pos = raw_joint_positions
-
-        # Initialize end-effector position if not available
-        if self.current_joint_pos is None:
-            return transition  # Cannot proceed without joint positions
-
-        # Calculate current end-effector position using forward kinematics
-        if self.current_ee_pos is None:
-            self.current_ee_pos = self.kinematics.forward_kinematics(self.current_joint_pos)
-
-        # Scale deltas by step sizes
-        delta_ee = np.array(
-            [
-                action_np[0] * self.end_effector_step_sizes["x"],
-                action_np[1] * self.end_effector_step_sizes["y"],
-                action_np[2] * self.end_effector_step_sizes["z"],
-            ],
-            dtype=np.float32,
-        )
-
-        # Set desired end-effector position by adding delta
-        desired_ee_pos = np.eye(4)
-        desired_ee_pos[:3, :3] = self.current_ee_pos[:3, :3]  # Keep orientation
-
-        # Add delta to position and clip to bounds
-        desired_ee_pos[:3, 3] = self.current_ee_pos[:3, 3] + delta_ee
-        if self.end_effector_bounds is not None:
-            desired_ee_pos[:3, 3] = np.clip(
-                desired_ee_pos[:3, 3],
-                self.end_effector_bounds["min"],
-                self.end_effector_bounds["max"],
-            )
-
-        # Compute inverse kinematics to get joint positions
-        target_joint_values = self.kinematics.inverse_kinematics(self.current_joint_pos, desired_ee_pos)
-
-        # Update current state
-        self.current_ee_pos = desired_ee_pos.copy()
-        self.current_joint_pos = target_joint_values.copy()
-
-        # Create new action with joint space commands
-        gripper_action = current_gripper_pos
-        if len(action_np) > 3:
-            # Handle gripper command separately
-            gripper_command = action_np[3]
-
-            # Process gripper command (convert from [0,2] to delta) and discretize
-            gripper_delta = np.round(gripper_command - 1.0).astype(int) * self.max_gripper_pos
-            gripper_action = np.clip(current_gripper_pos + gripper_delta, 0, self.max_gripper_pos)
-
-        # Combine joint positions and gripper
-        target_joint_values[-1] = gripper_action
-
-        converted_action = torch.from_numpy(target_joint_values).to(action.device).to(action.dtype)
-
-        new_transition = transition.copy()
-        new_transition[TransitionKey.ACTION] = converted_action
-        return new_transition
-
-    def get_config(self) -> dict[str, Any]:
-        return {
-            "urdf_path": self.urdf_path,
-            "target_frame_name": self.target_frame_name,
-            "end_effector_step_sizes": self.end_effector_step_sizes,
-            "end_effector_bounds": self.end_effector_bounds,
-            "max_gripper_pos": self.max_gripper_pos,
-        }
-
-    def state_dict(self) -> dict[str, torch.Tensor]:
-        return {}
-
-    def load_state_dict(self, state: dict[str, torch.Tensor]) -> None:
-        pass
-
-    def reset(self) -> None:
-        """Reset the processor state."""
-        self.current_ee_pos = None
-        self.current_joint_pos = None
-
-    def feature_contract(self, features: dict[str, PolicyFeature]) -> dict[str, PolicyFeature]:
-        return features

src/lerobot/record.py

@@ -18,7 +18,7 @@ Records a dataset. Actions for the robot can be either generated by teleoperatio
 Example:
 
 ```shell
-python -m lerobot.record \
+lerobot-record \
     --robot.type=so100_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.cameras="{laptop: {type: opencv, camera_index: 0, width: 640, height: 480}}" \
@@ -36,7 +36,7 @@ python -m lerobot.record \
 
 Example recording with bimanual so100:
 ```shell
-python -m lerobot.record \
+lerobot-record \
   --robot.type=bi_so100_follower \
   --robot.left_arm_port=/dev/tty.usbmodem5A460851411 \
   --robot.right_arm_port=/dev/tty.usbmodem5A460812391 \
@@ -73,7 +73,6 @@ from lerobot.configs.policies import PreTrainedConfig
 from lerobot.datasets.image_writer import safe_stop_image_writer
 from lerobot.datasets.lerobot_dataset import LeRobotDataset
 from lerobot.datasets.utils import build_dataset_frame, hw_to_dataset_features
-from lerobot.datasets.video_utils import VideoEncodingManager
 from lerobot.policies.factory import make_policy
 from lerobot.policies.pretrained import PreTrainedPolicy
 from lerobot.robots import (  # noqa: F401
@@ -272,8 +271,8 @@ def record_loop(
 
         if dataset is not None:
             action_frame = build_dataset_frame(dataset.features, sent_action, prefix="action")
-            frame = {**observation_frame, **action_frame}
-            dataset.add_frame(frame, task=single_task)
+            frame = {**observation_frame, **action_frame, "task": single_task}
+            dataset.add_frame(frame)
 
         if display_data:
             log_rerun_data(observation, action)
@@ -302,7 +301,6 @@ def record(cfg: RecordConfig) -> LeRobotDataset:
         dataset = LeRobotDataset(
             cfg.dataset.repo_id,
             root=cfg.dataset.root,
-            batch_encoding_size=cfg.dataset.video_encoding_batch_size,
         )
 
         if hasattr(robot, "cameras") and len(robot.cameras) > 0:
@@ -323,7 +321,6 @@ def record(cfg: RecordConfig) -> LeRobotDataset:
             use_videos=cfg.dataset.video,
             image_writer_processes=cfg.dataset.num_image_writer_processes,
             image_writer_threads=cfg.dataset.num_image_writer_threads_per_camera * len(robot.cameras),
-            batch_encoding_size=cfg.dataset.video_encoding_batch_size,
         )
 
     # Load pretrained policy
@@ -335,47 +332,46 @@ def record(cfg: RecordConfig) -> LeRobotDataset:
 
     listener, events = init_keyboard_listener()
 
-    with VideoEncodingManager(dataset):
-        recorded_episodes = 0
-        while recorded_episodes < cfg.dataset.num_episodes and not events["stop_recording"]:
-            log_say(f"Recording episode {dataset.num_episodes}", cfg.play_sounds)
+    recorded_episodes = 0
+    while recorded_episodes < cfg.dataset.num_episodes and not events["stop_recording"]:
+        log_say(f"Recording episode {dataset.num_episodes}", cfg.play_sounds)
+        record_loop(
+            robot=robot,
+            events=events,
+            fps=cfg.dataset.fps,
+            teleop=teleop,
+            policy=policy,
+            dataset=dataset,
+            control_time_s=cfg.dataset.episode_time_s,
+            single_task=cfg.dataset.single_task,
+            display_data=cfg.display_data,
+        )
+
+        # Execute a few seconds without recording to give time to manually reset the environment
+        # Skip reset for the last episode to be recorded
+        if not events["stop_recording"] and (
+            (recorded_episodes < cfg.dataset.num_episodes - 1) or events["rerecord_episode"]
+        ):
+            log_say("Reset the environment", cfg.play_sounds)
             record_loop(
                 robot=robot,
                 events=events,
                 fps=cfg.dataset.fps,
                 teleop=teleop,
-                policy=policy,
-                dataset=dataset,
-                control_time_s=cfg.dataset.episode_time_s,
+                control_time_s=cfg.dataset.reset_time_s,
                 single_task=cfg.dataset.single_task,
                 display_data=cfg.display_data,
             )
 
-            # Execute a few seconds without recording to give time to manually reset the environment
-            # Skip reset for the last episode to be recorded
-            if not events["stop_recording"] and (
-                (recorded_episodes < cfg.dataset.num_episodes - 1) or events["rerecord_episode"]
-            ):
-                log_say("Reset the environment", cfg.play_sounds)
-                record_loop(
-                    robot=robot,
-                    events=events,
-                    fps=cfg.dataset.fps,
-                    teleop=teleop,
-                    control_time_s=cfg.dataset.reset_time_s,
-                    single_task=cfg.dataset.single_task,
-                    display_data=cfg.display_data,
-                )
+        if events["rerecord_episode"]:
+            log_say("Re-record episode", cfg.play_sounds)
+            events["rerecord_episode"] = False
+            events["exit_early"] = False
+            dataset.clear_episode_buffer()
+            continue
 
-            if events["rerecord_episode"]:
-                log_say("Re-record episode", cfg.play_sounds)
-                events["rerecord_episode"] = False
-                events["exit_early"] = False
-                dataset.clear_episode_buffer()
-                continue
-
-            dataset.save_episode()
-            recorded_episodes += 1
+        dataset.save_episode()
+        recorded_episodes += 1
 
     log_say("Stop recording", cfg.play_sounds, blocking=True)
 
@@ -393,5 +389,9 @@ def record(cfg: RecordConfig) -> LeRobotDataset:
     return dataset
 
 
-if __name__ == "__main__":
+def main():
     record()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/replay.py

@@ -18,7 +18,7 @@ Replays the actions of an episode from a dataset on a robot.
 Examples:
 
 ```shell
-python -m lerobot.replay \
+lerobot-replay \
     --robot.type=so100_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.id=black \
@@ -28,7 +28,7 @@ python -m lerobot.replay \
 
 Example replay with bimanual so100:
 ```shell
-python -m lerobot.replay \
+lerobot-replay \
   --robot.type=bi_so100_follower \
   --robot.left_arm_port=/dev/tty.usbmodem5A460851411 \
   --robot.right_arm_port=/dev/tty.usbmodem5A460812391 \
@@ -112,5 +112,9 @@ def replay(cfg: ReplayConfig):
     robot.disconnect()
 
 
-if __name__ == "__main__":
+def main():
     replay()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/robots/viperx/README.md

@@ -115,11 +115,11 @@ If you uploaded your dataset to the hub with `--control.push_to_hub=true`, you c
 echo ${HF_USER}/aloha_test
 ```
 
-If you didn't upload with `--control.push_to_hub=false`, you can also visualize it locally with:
+If you didn't upload with `--control.push_to_hub=false`, you can also visualize it locally with [Rerun](https://github.com/rerun-io/rerun):
 
 ```bash
-python -m lerobot.scripts.visualize_dataset_html \
-  --repo-id ${HF_USER}/aloha_test
+python -m lerobot.scripts.visualize_dataset \
+  --repo-id ${HF_USER}/aloha_test --episode 0
 ```
 
 ## Replay an episode
@@ -141,10 +141,10 @@ python lerobot/scripts/control_robot.py \
 
 ## Train a policy
 
-To train a policy to control your robot, use the [`python -m lerobot.scripts.train`](../src/lerobot/scripts/train.py) script. A few arguments are required. Here is an example command:
+To train a policy to control your robot, use the [`lerobot-train`](../src/lerobot/scripts/train.py) script. A few arguments are required. Here is an example command:
 
 ```bash
-python -m lerobot.scripts.train \
+lerobot-train \
   --dataset.repo_id=${HF_USER}/aloha_test \
   --policy.type=act \
   --output_dir=outputs/train/act_aloha_test \

src/lerobot/scripts/eval.py

@@ -21,7 +21,7 @@ You want to evaluate a model from the hub (eg: https://huggingface.co/lerobot/di
 for 10 episodes.
 
 ```
-python -m lerobot.scripts.eval \
+lerobot-eval \
     --policy.path=lerobot/diffusion_pusht \
     --env.type=pusht \
     --eval.batch_size=10 \
@@ -32,7 +32,7 @@ python -m lerobot.scripts.eval \
 
 OR, you want to evaluate a model checkpoint from the LeRobot training script for 10 episodes.
 ```
-python -m lerobot.scripts.eval \
+lerobot-eval \
     --policy.path=outputs/train/diffusion_pusht/checkpoints/005000/pretrained_model \
     --env.type=pusht \
     --eval.batch_size=10 \
@@ -68,11 +68,10 @@ from tqdm import trange
 from lerobot.configs import parser
 from lerobot.configs.eval import EvalPipelineConfig
 from lerobot.envs.factory import make_env
-from lerobot.envs.utils import add_envs_task, check_env_attributes_and_types
+from lerobot.envs.utils import add_envs_task, check_env_attributes_and_types, preprocess_observation
 from lerobot.policies.factory import make_policy
 from lerobot.policies.pretrained import PreTrainedPolicy
 from lerobot.policies.utils import get_device_from_parameters
-from lerobot.processor import RobotProcessor, TransitionKey, VanillaObservationProcessor
 from lerobot.utils.io_utils import write_video
 from lerobot.utils.random_utils import set_seed
 from lerobot.utils.utils import (
@@ -129,16 +128,6 @@ def rollout(
     if render_callback is not None:
         render_callback(env)
 
-    # Create observation processing processor
-    # NOTE: During environment interaction, we skip batch dictionary conversion
-    # since that format is only needed for loss computation during training.
-    # Using identity functions to avoid unnecessary format transformations.
-    obs_processor = RobotProcessor(
-        [VanillaObservationProcessor()],
-        to_transition=lambda x: x,
-        to_output=lambda x: x,
-    )
-
     all_observations = []
     all_actions = []
     all_rewards = []
@@ -158,13 +147,10 @@ def rollout(
     check_env_attributes_and_types(env)
     while not np.all(done):
         # Numpy array to tensor and changing dictionary keys to LeRobot policy format.
-        transition = (observation, None, None, None, None, None, None)
-        processed_transition = obs_processor(transition)
-        observation = processed_transition[TransitionKey.OBSERVATION]
+        observation = preprocess_observation(observation)
         if return_observations:
             all_observations.append(deepcopy(observation))
 
-        # TODO(azouitine): Move this in processor side
         observation = {
             key: observation[key].to(device, non_blocking=device.type == "cuda") for key in observation
         }
@@ -209,9 +195,7 @@ def rollout(
 
     # Track the final observation.
     if return_observations:
-        transition = (observation, None, None, None, None, None, None)
-        processed_transition = obs_processor(transition)
-        observation = processed_transition[TransitionKey.OBSERVATION]
+        observation = preprocess_observation(observation)
         all_observations.append(deepcopy(observation))
 
     # Stack the sequence along the first dimension so that we have (batch, sequence, *) tensors.
@@ -517,6 +501,10 @@ def eval_main(cfg: EvalPipelineConfig):
     logging.info("End of eval")
 
 
-if __name__ == "__main__":
+def main():
     init_logging()
     eval_main()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/scripts/rl/actor.py

@@ -62,14 +62,8 @@ from lerobot.configs import parser
 from lerobot.configs.train import TrainRLServerPipelineConfig
 from lerobot.policies.factory import make_policy
 from lerobot.policies.sac.modeling_sac import SACPolicy
-from lerobot.processor.pipeline import TransitionKey
 from lerobot.robots import so100_follower  # noqa: F401
-from lerobot.scripts.rl.gym_manipulator import (
-    create_transition,
-    make_processors,
-    make_robot_env,
-    step_env_and_process_transition,
-)
+from lerobot.scripts.rl.gym_manipulator import make_robot_env
 from lerobot.teleoperators import gamepad, so101_leader  # noqa: F401
 from lerobot.transport import services_pb2, services_pb2_grpc
 from lerobot.transport.utils import (
@@ -242,8 +236,7 @@ def act_with_policy(
 
     logging.info("make_env online")
 
-    online_env, teleop_device = make_robot_env(cfg=cfg.env)
-    env_processor, action_processor = make_processors(online_env, cfg.env)
+    online_env = make_robot_env(cfg=cfg.env)
 
     set_seed(cfg.seed)
     device = get_safe_torch_device(cfg.policy.device, log=True)
@@ -264,13 +257,6 @@ def act_with_policy(
     assert isinstance(policy, nn.Module)
 
     obs, info = online_env.reset()
-    complementary_data = {"raw_joint_positions": info.pop("raw_joint_positions")}
-    env_processor.reset()
-    action_processor.reset()
-
-    # Process initial observation
-    transition = create_transition(observation=obs, info=info, complementary_data=complementary_data)
-    transition = env_processor(transition)
 
     # NOTE: For the moment we will solely handle the case of a single environment
     sum_reward_episode = 0
@@ -288,57 +274,45 @@ def act_with_policy(
             logging.info("[ACTOR] Shutting down act_with_policy")
             return
 
-        observation = transition[TransitionKey.OBSERVATION]
+        if interaction_step >= cfg.policy.online_step_before_learning:
+            # Time policy inference and check if it meets FPS requirement
+            with policy_timer:
+                action = policy.select_action(batch=obs)
+            policy_fps = policy_timer.fps_last
 
-        # Time policy inference and check if it meets FPS requirement
-        with policy_timer:
-            # Extract observation from transition for policy
-            action = policy.select_action(batch=observation)
-        policy_fps = policy_timer.fps_last
+            log_policy_frequency_issue(policy_fps=policy_fps, cfg=cfg, interaction_step=interaction_step)
 
-        log_policy_frequency_issue(policy_fps=policy_fps, cfg=cfg, interaction_step=interaction_step)
+        else:
+            action = online_env.action_space.sample()
 
-        # Use the new step function
-        new_transition, terminate_episode = step_env_and_process_transition(
-            env=online_env,
-            transition=transition,
-            action=action,
-            teleop_device=teleop_device,
-            env_processor=env_processor,
-            action_processor=action_processor,
-        )
-
-        # Extract values from processed transition
-        next_observation = new_transition[TransitionKey.OBSERVATION]
-        executed_action = new_transition[TransitionKey.COMPLEMENTARY_DATA]["teleop_action"]
-        reward = new_transition[TransitionKey.REWARD]
-        done = new_transition.get(TransitionKey.DONE, False)
-        truncated = new_transition.get(TransitionKey.TRUNCATED, False)
+        next_obs, reward, done, truncated, info = online_env.step(action)
 
         sum_reward_episode += float(reward)
+        # Increment total steps counter for intervention rate
         episode_total_steps += 1
 
-        # Check for intervention from transition info
-        intervention_info = new_transition[TransitionKey.INFO]
-        if intervention_info.get("is_intervention", False):
+        # NOTE: We override the action if the intervention is True, because the action applied is the intervention action
+        if "is_intervention" in info and info["is_intervention"]:
+            # NOTE: The action space for demonstration before hand is with the full action space
+            # but sometimes for example we want to deactivate the gripper
+            action = info["action_intervention"]
             episode_intervention = True
+            # Increment intervention steps counter
             episode_intervention_steps += 1
 
-        # Create transition for learner (convert to old format)
         list_transition_to_send_to_learner.append(
             Transition(
-                state=observation,
-                action=executed_action,
+                state=obs,
+                action=action,
                 reward=reward,
-                next_state=next_observation,
+                next_state=next_obs,
                 done=done,
-                truncated=truncated,
-                complementary_info={},  # new_transition[TransitionKey.COMPLEMENTARY_DATA],
+                truncated=truncated,  # TODO: (azouitine) Handle truncation properly
+                complementary_info=info,
             )
         )
-
-        # Update transition for next iteration
-        transition = new_transition
+        # assign obs to the next obs and continue the rollout
+        obs = next_obs
 
         if done or truncated:
             logging.info(f"[ACTOR] Global step {interaction_step}: Episode reward: {sum_reward_episode}")
@@ -373,21 +347,12 @@ def act_with_policy(
                 )
             )
 
-            # Reset intervention counters and environment
+            # Reset intervention counters
             sum_reward_episode = 0.0
             episode_intervention = False
             episode_intervention_steps = 0
             episode_total_steps = 0
-
-            # Reset environment and processors
             obs, info = online_env.reset()
-            complementary_data = {"raw_joint_positions": info.pop("raw_joint_positions")}
-            env_processor.reset()
-            action_processor.reset()
-
-            # Process initial observation
-            transition = create_transition(observation=obs, info=info, complementary_data=complementary_data)
-            transition = env_processor(transition)
 
         if cfg.env.fps is not None:
             dt_time = time.perf_counter() - start_time

src/lerobot/scripts/rl/crop_dataset_roi.py

@@ -226,7 +226,8 @@ def convert_lerobot_dataset_to_cropper_lerobot_dataset(
                 value = value.unsqueeze(0)
             new_frame[key] = value
 
-        new_dataset.add_frame(new_frame, task=task)
+        new_frame["task"] = task
+        new_dataset.add_frame(new_frame)
 
         if frame["episode_index"].item() != prev_episode_index:
             # Save the episode

src/lerobot/scripts/server/robot_client.py

@@ -302,11 +302,6 @@ class RobotClient:
 
                     self.logger.debug(f"Current latest action: {latest_action}")
 
-                    # Get queue state before changes
-                    old_size, old_timesteps = self._inspect_action_queue()
-                    if not old_timesteps:
-                        old_timesteps = [latest_action]  # queue was empty
-
                     # Get queue state before changes
                     old_size, old_timesteps = self._inspect_action_queue()
                     if not old_timesteps:

src/lerobot/scripts/train.py

@@ -166,7 +166,8 @@ def train(cfg: TrainPipelineConfig):
     if hasattr(cfg.policy, "drop_n_last_frames"):
         shuffle = False
         sampler = EpisodeAwareSampler(
-            dataset.episode_data_index,
+            dataset.meta.episodes["dataset_from_index"],
+            dataset.meta.episodes["dataset_to_index"],
             drop_n_last_frames=cfg.policy.drop_n_last_frames,
             shuffle=True,
         )
@@ -286,6 +287,10 @@ def train(cfg: TrainPipelineConfig):
         policy.push_model_to_hub(cfg)
 
 
-if __name__ == "__main__":
+def main():
     init_logging()
     train()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/scripts/visualize_dataset.py

@@ -79,8 +79,8 @@ from lerobot.datasets.lerobot_dataset import LeRobotDataset
 
 class EpisodeSampler(torch.utils.data.Sampler):
     def __init__(self, dataset: LeRobotDataset, episode_index: int):
-        from_idx = dataset.episode_data_index["from"][episode_index].item()
-        to_idx = dataset.episode_data_index["to"][episode_index].item()
+        from_idx = dataset.meta.episodes["dataset_from_index"][episode_index]
+        to_idx = dataset.meta.episodes["dataset_to_index"][episode_index]
         self.frame_ids = range(from_idx, to_idx)
 
     def __iter__(self) -> Iterator:
@@ -283,7 +283,7 @@ def main():
     tolerance_s = kwargs.pop("tolerance_s")
 
     logging.info("Loading dataset")
-    dataset = LeRobotDataset(repo_id, root=root, tolerance_s=tolerance_s)
+    dataset = LeRobotDataset(repo_id, episodes=[args.episode_index], root=root, tolerance_s=tolerance_s)
 
     visualize_dataset(dataset, **vars(args))
 

src/lerobot/scripts/visualize_dataset_html.py

@@ -1,482 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-""" Visualize data of **all** frames of any episode of a dataset of type LeRobotDataset.
-
-Note: The last frame of the episode doesnt always correspond to a final state.
-That's because our datasets are composed of transition from state to state up to
-the antepenultimate state associated to the ultimate action to arrive in the final state.
-However, there might not be a transition from a final state to another state.
-
-Note: This script aims to visualize the data used to train the neural networks.
-~What you see is what you get~. When visualizing image modality, it is often expected to observe
-lossly compression artifacts since these images have been decoded from compressed mp4 videos to
-save disk space. The compression factor applied has been tuned to not affect success rate.
-
-Example of usage:
-
-- Visualize data stored on a local machine:
-```bash
-local$ python -m lerobot.scripts.visualize_dataset_html \
-    --repo-id lerobot/pusht
-
-local$ open http://localhost:9090
-```
-
-- Visualize data stored on a distant machine with a local viewer:
-```bash
-distant$ python -m lerobot.scripts.visualize_dataset_html \
-    --repo-id lerobot/pusht
-
-local$ ssh -L 9090:localhost:9090 distant  # create a ssh tunnel
-local$ open http://localhost:9090
-```
-
-- Select episodes to visualize:
-```bash
-python -m lerobot.scripts.visualize_dataset_html \
-    --repo-id lerobot/pusht \
-    --episodes 7 3 5 1 4
-```
-"""
-
-import argparse
-import csv
-import json
-import logging
-import re
-import shutil
-import tempfile
-from io import StringIO
-from pathlib import Path
-
-import numpy as np
-import pandas as pd
-import requests
-from flask import Flask, redirect, render_template, request, url_for
-
-from lerobot import available_datasets
-from lerobot.datasets.lerobot_dataset import LeRobotDataset
-from lerobot.datasets.utils import IterableNamespace
-from lerobot.utils.utils import init_logging
-
-
-def run_server(
-    dataset: LeRobotDataset | IterableNamespace | None,
-    episodes: list[int] | None,
-    host: str,
-    port: str,
-    static_folder: Path,
-    template_folder: Path,
-):
-    app = Flask(__name__, static_folder=static_folder.resolve(), template_folder=template_folder.resolve())
-    app.config["SEND_FILE_MAX_AGE_DEFAULT"] = 0  # specifying not to cache
-
-    @app.route("/")
-    def hommepage(dataset=dataset):
-        if dataset:
-            dataset_namespace, dataset_name = dataset.repo_id.split("/")
-            return redirect(
-                url_for(
-                    "show_episode",
-                    dataset_namespace=dataset_namespace,
-                    dataset_name=dataset_name,
-                    episode_id=0,
-                )
-            )
-
-        dataset_param, episode_param = None, None
-        all_params = request.args
-        if "dataset" in all_params:
-            dataset_param = all_params["dataset"]
-        if "episode" in all_params:
-            episode_param = int(all_params["episode"])
-
-        if dataset_param:
-            dataset_namespace, dataset_name = dataset_param.split("/")
-            return redirect(
-                url_for(
-                    "show_episode",
-                    dataset_namespace=dataset_namespace,
-                    dataset_name=dataset_name,
-                    episode_id=episode_param if episode_param is not None else 0,
-                )
-            )
-
-        featured_datasets = [
-            "lerobot/aloha_static_cups_open",
-            "lerobot/columbia_cairlab_pusht_real",
-            "lerobot/taco_play",
-        ]
-        return render_template(
-            "visualize_dataset_homepage.html",
-            featured_datasets=featured_datasets,
-            lerobot_datasets=available_datasets,
-        )
-
-    @app.route("/<string:dataset_namespace>/<string:dataset_name>")
-    def show_first_episode(dataset_namespace, dataset_name):
-        first_episode_id = 0
-        return redirect(
-            url_for(
-                "show_episode",
-                dataset_namespace=dataset_namespace,
-                dataset_name=dataset_name,
-                episode_id=first_episode_id,
-            )
-        )
-
-    @app.route("/<string:dataset_namespace>/<string:dataset_name>/episode_<int:episode_id>")
-    def show_episode(dataset_namespace, dataset_name, episode_id, dataset=dataset, episodes=episodes):
-        repo_id = f"{dataset_namespace}/{dataset_name}"
-        try:
-            if dataset is None:
-                dataset = get_dataset_info(repo_id)
-        except FileNotFoundError:
-            return (
-                "Make sure to convert your LeRobotDataset to v2 & above. See how to convert your dataset at https://github.com/huggingface/lerobot/pull/461",
-                400,
-            )
-        dataset_version = (
-            str(dataset.meta._version) if isinstance(dataset, LeRobotDataset) else dataset.codebase_version
-        )
-        match = re.search(r"v(\d+)\.", dataset_version)
-        if match:
-            major_version = int(match.group(1))
-            if major_version < 2:
-                return "Make sure to convert your LeRobotDataset to v2 & above."
-
-        episode_data_csv_str, columns, ignored_columns = get_episode_data(dataset, episode_id)
-        dataset_info = {
-            "repo_id": f"{dataset_namespace}/{dataset_name}",
-            "num_samples": dataset.num_frames
-            if isinstance(dataset, LeRobotDataset)
-            else dataset.total_frames,
-            "num_episodes": dataset.num_episodes
-            if isinstance(dataset, LeRobotDataset)
-            else dataset.total_episodes,
-            "fps": dataset.fps,
-        }
-        if isinstance(dataset, LeRobotDataset):
-            video_paths = [
-                dataset.meta.get_video_file_path(episode_id, key) for key in dataset.meta.video_keys
-            ]
-            videos_info = [
-                {
-                    "url": url_for("static", filename=str(video_path).replace("\\", "/")),
-                    "filename": video_path.parent.name,
-                }
-                for video_path in video_paths
-            ]
-            tasks = dataset.meta.episodes[episode_id]["tasks"]
-        else:
-            video_keys = [key for key, ft in dataset.features.items() if ft["dtype"] == "video"]
-            videos_info = [
-                {
-                    "url": f"https://huggingface.co/datasets/{repo_id}/resolve/main/"
-                    + dataset.video_path.format(
-                        episode_chunk=int(episode_id) // dataset.chunks_size,
-                        video_key=video_key,
-                        episode_index=episode_id,
-                    ),
-                    "filename": video_key,
-                }
-                for video_key in video_keys
-            ]
-
-            response = requests.get(
-                f"https://huggingface.co/datasets/{repo_id}/resolve/main/meta/episodes.jsonl", timeout=5
-            )
-            response.raise_for_status()
-            # Split into lines and parse each line as JSON
-            tasks_jsonl = [json.loads(line) for line in response.text.splitlines() if line.strip()]
-
-            filtered_tasks_jsonl = [row for row in tasks_jsonl if row["episode_index"] == episode_id]
-            tasks = filtered_tasks_jsonl[0]["tasks"]
-
-        videos_info[0]["language_instruction"] = tasks
-
-        if episodes is None:
-            episodes = list(
-                range(dataset.num_episodes if isinstance(dataset, LeRobotDataset) else dataset.total_episodes)
-            )
-
-        return render_template(
-            "visualize_dataset_template.html",
-            episode_id=episode_id,
-            episodes=episodes,
-            dataset_info=dataset_info,
-            videos_info=videos_info,
-            episode_data_csv_str=episode_data_csv_str,
-            columns=columns,
-            ignored_columns=ignored_columns,
-        )
-
-    app.run(host=host, port=port)
-
-
-def get_ep_csv_fname(episode_id: int):
-    ep_csv_fname = f"episode_{episode_id}.csv"
-    return ep_csv_fname
-
-
-def get_episode_data(dataset: LeRobotDataset | IterableNamespace, episode_index):
-    """Get a csv str containing timeseries data of an episode (e.g. state and action).
-    This file will be loaded by Dygraph javascript to plot data in real time."""
-    columns = []
-
-    selected_columns = [col for col, ft in dataset.features.items() if ft["dtype"] in ["float32", "int32"]]
-    selected_columns.remove("timestamp")
-
-    ignored_columns = []
-    for column_name in selected_columns:
-        shape = dataset.features[column_name]["shape"]
-        shape_dim = len(shape)
-        if shape_dim > 1:
-            selected_columns.remove(column_name)
-            ignored_columns.append(column_name)
-
-    # init header of csv with state and action names
-    header = ["timestamp"]
-
-    for column_name in selected_columns:
-        dim_state = (
-            dataset.meta.shapes[column_name][0]
-            if isinstance(dataset, LeRobotDataset)
-            else dataset.features[column_name].shape[0]
-        )
-
-        if "names" in dataset.features[column_name] and dataset.features[column_name]["names"]:
-            column_names = dataset.features[column_name]["names"]
-            while not isinstance(column_names, list):
-                column_names = list(column_names.values())[0]
-        else:
-            column_names = [f"{column_name}_{i}" for i in range(dim_state)]
-        columns.append({"key": column_name, "value": column_names})
-
-        header += column_names
-
-    selected_columns.insert(0, "timestamp")
-
-    if isinstance(dataset, LeRobotDataset):
-        from_idx = dataset.episode_data_index["from"][episode_index]
-        to_idx = dataset.episode_data_index["to"][episode_index]
-        data = (
-            dataset.hf_dataset.select(range(from_idx, to_idx))
-            .select_columns(selected_columns)
-            .with_format("pandas")
-        )
-    else:
-        repo_id = dataset.repo_id
-
-        url = f"https://huggingface.co/datasets/{repo_id}/resolve/main/" + dataset.data_path.format(
-            episode_chunk=int(episode_index) // dataset.chunks_size, episode_index=episode_index
-        )
-        df = pd.read_parquet(url)
-        data = df[selected_columns]  # Select specific columns
-
-    rows = np.hstack(
-        (
-            np.expand_dims(data["timestamp"], axis=1),
-            *[np.vstack(data[col]) for col in selected_columns[1:]],
-        )
-    ).tolist()
-
-    # Convert data to CSV string
-    csv_buffer = StringIO()
-    csv_writer = csv.writer(csv_buffer)
-    # Write header
-    csv_writer.writerow(header)
-    # Write data rows
-    csv_writer.writerows(rows)
-    csv_string = csv_buffer.getvalue()
-
-    return csv_string, columns, ignored_columns
-
-
-def get_episode_video_paths(dataset: LeRobotDataset, ep_index: int) -> list[str]:
-    # get first frame of episode (hack to get video_path of the episode)
-    first_frame_idx = dataset.episode_data_index["from"][ep_index].item()
-    return [
-        dataset.hf_dataset.select_columns(key)[first_frame_idx][key]["path"]
-        for key in dataset.meta.video_keys
-    ]
-
-
-def get_episode_language_instruction(dataset: LeRobotDataset, ep_index: int) -> list[str]:
-    # check if the dataset has language instructions
-    if "language_instruction" not in dataset.features:
-        return None
-
-    # get first frame index
-    first_frame_idx = dataset.episode_data_index["from"][ep_index].item()
-
-    language_instruction = dataset.hf_dataset[first_frame_idx]["language_instruction"]
-    # TODO (michel-aractingi) hack to get the sentence, some strings in openx are badly stored
-    # with the tf.tensor appearing in the string
-    return language_instruction.removeprefix("tf.Tensor(b'").removesuffix("', shape=(), dtype=string)")
-
-
-def get_dataset_info(repo_id: str) -> IterableNamespace:
-    response = requests.get(
-        f"https://huggingface.co/datasets/{repo_id}/resolve/main/meta/info.json", timeout=5
-    )
-    response.raise_for_status()  # Raises an HTTPError for bad responses
-    dataset_info = response.json()
-    dataset_info["repo_id"] = repo_id
-    return IterableNamespace(dataset_info)
-
-
-def visualize_dataset_html(
-    dataset: LeRobotDataset | None,
-    episodes: list[int] | None = None,
-    output_dir: Path | None = None,
-    serve: bool = True,
-    host: str = "127.0.0.1",
-    port: int = 9090,
-    force_override: bool = False,
-) -> Path | None:
-    init_logging()
-
-    template_dir = Path(__file__).resolve().parent.parent / "templates"
-
-    if output_dir is None:
-        # Create a temporary directory that will be automatically cleaned up
-        output_dir = tempfile.mkdtemp(prefix="lerobot_visualize_dataset_")
-
-    output_dir = Path(output_dir)
-    if output_dir.exists():
-        if force_override:
-            shutil.rmtree(output_dir)
-        else:
-            logging.info(f"Output directory already exists. Loading from it: '{output_dir}'")
-
-    output_dir.mkdir(parents=True, exist_ok=True)
-
-    static_dir = output_dir / "static"
-    static_dir.mkdir(parents=True, exist_ok=True)
-
-    if dataset is None:
-        if serve:
-            run_server(
-                dataset=None,
-                episodes=None,
-                host=host,
-                port=port,
-                static_folder=static_dir,
-                template_folder=template_dir,
-            )
-    else:
-        # Create a simlink from the dataset video folder containing mp4 files to the output directory
-        # so that the http server can get access to the mp4 files.
-        if isinstance(dataset, LeRobotDataset):
-            ln_videos_dir = static_dir / "videos"
-            if not ln_videos_dir.exists():
-                ln_videos_dir.symlink_to((dataset.root / "videos").resolve().as_posix())
-
-        if serve:
-            run_server(dataset, episodes, host, port, static_dir, template_dir)
-
-
-def main():
-    parser = argparse.ArgumentParser()
-
-    parser.add_argument(
-        "--repo-id",
-        type=str,
-        default=None,
-        help="Name of hugging face repositery containing a LeRobotDataset dataset (e.g. `lerobot/pusht` for https://huggingface.co/datasets/lerobot/pusht).",
-    )
-    parser.add_argument(
-        "--root",
-        type=Path,
-        default=None,
-        help="Root directory for a dataset stored locally (e.g. `--root data`). By default, the dataset will be loaded from hugging face cache folder, or downloaded from the hub if available.",
-    )
-    parser.add_argument(
-        "--load-from-hf-hub",
-        type=int,
-        default=0,
-        help="Load videos and parquet files from HF Hub rather than local system.",
-    )
-    parser.add_argument(
-        "--episodes",
-        type=int,
-        nargs="*",
-        default=None,
-        help="Episode indices to visualize (e.g. `0 1 5 6` to load episodes of index 0, 1, 5 and 6). By default loads all episodes.",
-    )
-    parser.add_argument(
-        "--output-dir",
-        type=Path,
-        default=None,
-        help="Directory path to write html files and kickoff a web server. By default write them to 'outputs/visualize_dataset/REPO_ID'.",
-    )
-    parser.add_argument(
-        "--serve",
-        type=int,
-        default=1,
-        help="Launch web server.",
-    )
-    parser.add_argument(
-        "--host",
-        type=str,
-        default="127.0.0.1",
-        help="Web host used by the http server.",
-    )
-    parser.add_argument(
-        "--port",
-        type=int,
-        default=9090,
-        help="Web port used by the http server.",
-    )
-    parser.add_argument(
-        "--force-override",
-        type=int,
-        default=0,
-        help="Delete the output directory if it exists already.",
-    )
-
-    parser.add_argument(
-        "--tolerance-s",
-        type=float,
-        default=1e-4,
-        help=(
-            "Tolerance in seconds used to ensure data timestamps respect the dataset fps value"
-            "This is argument passed to the constructor of LeRobotDataset and maps to its tolerance_s constructor argument"
-            "If not given, defaults to 1e-4."
-        ),
-    )
-
-    args = parser.parse_args()
-    kwargs = vars(args)
-    repo_id = kwargs.pop("repo_id")
-    load_from_hf_hub = kwargs.pop("load_from_hf_hub")
-    root = kwargs.pop("root")
-    tolerance_s = kwargs.pop("tolerance_s")
-
-    dataset = None
-    if repo_id:
-        dataset = (
-            LeRobotDataset(repo_id, root=root, tolerance_s=tolerance_s)
-            if not load_from_hf_hub
-            else get_dataset_info(repo_id)
-        )
-
-    visualize_dataset_html(dataset, **vars(args))
-
-
-if __name__ == "__main__":
-    main()

src/lerobot/setup_motors.py

@@ -18,7 +18,7 @@ Helper to set motor ids and baudrate.
 Example:
 
 ```shell
-python -m lerobot.setup_motors \
+lerobot-setup-motors \
     --teleop.type=so100_leader \
     --teleop.port=/dev/tty.usbmodem575E0031751
 ```
@@ -80,5 +80,9 @@ def setup_motors(cfg: SetupConfig):
     device.setup_motors()
 
 
-if __name__ == "__main__":
+def main():
     setup_motors()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/teleoperate.py

@@ -18,7 +18,7 @@ Simple script to control a robot from teleoperation.
 Example:
 
 ```shell
-python -m lerobot.teleoperate \
+lerobot-teleoperate \
     --robot.type=so101_follower \
     --robot.port=/dev/tty.usbmodem58760431541 \
     --robot.cameras="{ front: {type: opencv, index_or_path: 0, width: 1920, height: 1080, fps: 30}}" \
@@ -32,7 +32,7 @@ python -m lerobot.teleoperate \
 Example teleoperation with bimanual so100:
 
 ```shell
-python -m lerobot.teleoperate \
+lerobot-teleoperate \
   --robot.type=bi_so100_follower \
   --robot.left_arm_port=/dev/tty.usbmodem5A460851411 \
   --robot.right_arm_port=/dev/tty.usbmodem5A460812391 \
@@ -153,5 +153,9 @@ def teleoperate(cfg: TeleoperateConfig):
         robot.disconnect()
 
 
-if __name__ == "__main__":
+def main():
     teleoperate()
+
+
+if __name__ == "__main__":
+    main()

src/lerobot/teleoperators/gamepad/teleop_gamepad.py

@@ -107,45 +107,6 @@ class GamepadTeleop(Teleoperator):
 
         return action_dict
 
-    def get_teleop_events(self) -> dict[str, Any]:
-        """
-        Get extra control events from the gamepad such as intervention status,
-        episode termination, success indicators, etc.
-
-        Returns:
-            Dictionary containing:
-                - is_intervention: bool - Whether human is currently intervening
-                - terminate_episode: bool - Whether to terminate the current episode
-                - success: bool - Whether the episode was successful
-                - rerecord_episode: bool - Whether to rerecord the episode
-        """
-        if self.gamepad is None:
-            return {
-                "is_intervention": False,
-                "terminate_episode": False,
-                "success": False,
-                "rerecord_episode": False,
-            }
-
-        # Update gamepad state to get fresh inputs
-        self.gamepad.update()
-
-        # Check if intervention is active
-        is_intervention = self.gamepad.should_intervene()
-
-        # Get episode end status
-        episode_end_status = self.gamepad.get_episode_end_status()
-        terminate_episode = episode_end_status is not None
-        success = episode_end_status == "success"
-        rerecord_episode = episode_end_status == "rerecord_episode"
-
-        return {
-            "is_intervention": is_intervention,
-            "terminate_episode": terminate_episode,
-            "success": success,
-            "rerecord_episode": rerecord_episode,
-        }
-
     def disconnect(self) -> None:
         """Disconnect from the gamepad."""
         if self.gamepad is not None: