Merge remote-tracking branch 'origin/main' into feat/smolvla-on-steerable

Co-authored-by: Cursor <cursoragent@cursor.com>

# Conflicts:
#	src/lerobot/configs/train.py
#	src/lerobot/datasets/__init__.py
#	src/lerobot/policies/factory.py
#	src/lerobot/policies/groot/groot_n1.py
#	src/lerobot/scripts/lerobot_eval.py
#	src/lerobot/scripts/lerobot_train.py
#	uv.lock
This commit is contained in:
pepijn
2026-07-08 10:31:40 +00:00
245 changed files with 32689 additions and 8703 deletions
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@@ -69,8 +69,14 @@
title: VLA-JEPA
- local: eo1
title: EO-1
- local: lingbot_va
title: LingBot-VA
- local: fastwam
title: FastWAM
- local: evo1
title: EVO1
- local: groot
title: NVIDIA GR00T N1.5
title: NVIDIA GR00T
- local: xvla
title: X-VLA
- local: multi_task_dit
@@ -163,6 +169,8 @@
- sections:
- local: phone_teleop
title: Phone
- local: isaac_teleop
title: Isaac Teleop
title: "Teleoperators"
- sections:
- local: cameras
+4 -1
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@@ -295,11 +295,12 @@ The file names are load-bearing: the factory does lazy imports by name, and the
### Wiring
Three places need to know about your policy. All by name.
Four places need to know about your policy. All by name.
1. **`policies/__init__.py`** — re-export `MyPolicyConfig` and add it to `__all__`. **Don't** re-export the modeling class; it loads lazily through the factory (so `import lerobot` stays fast).
2. **`factory.py:get_policy_class`** — add a branch returning `MyPolicy` from a lazy import.
3. **`factory.py:make_policy_config`** and **`factory.py:make_pre_post_processors`** — same idea, two more branches.
4. **`templates/lerobot_modelcard_template.md` and the root `README.md`** — the template is what `push_model_to_hub` renders into the model card of every checkpoint trained with your policy: add a one-line description of your policy in the `model_name` branches, map it in `policy_docs` so cards link to your MDX guide, and optionally add an architecture image to `diagrams`. Then add your policy to the models table in the root `README.md`, under the right category, linking to your doc page.
Mirror an existing policy that's structurally similar to yours; the diff is small.
@@ -371,6 +372,8 @@ The general expectations are in [`CONTRIBUTING.md`](https://github.com/huggingfa
- [ ] Optional deps live behind a `[project.optional-dependencies]` extra and the `TYPE_CHECKING + require_package` guard.
- [ ] `tests/policies/` updated; backward-compat artifact committed & policy-specific tests.
- [ ] `src/lerobot/policies/<name>/README.md` symlinked into `docs/source/policy_<name>_README.md`; user-facing `docs/source/<name>.mdx` written and added to `_toctree.yml`.
- [ ] `templates/lerobot_modelcard_template.md` has a description entry and a `policy_docs` link for your policy.
- [ ] The models table in the root `README.md` lists your policy in the right category, linking to your doc page.
- [ ] At least one reproducible benchmark eval in the policy MDX with a published checkpoint (sim benchmark, or real-robot dataset + checkpoint).
The fastest way to get a clean PR is to copy the directory of the existing policy closest to yours, rename, and replace contents method by method. Don't wait until everything is polished — open a draft PR early and iterate with us; reviewers would much rather give feedback on a half-finished branch than a fully-merged one.
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@@ -157,6 +157,14 @@ finally:
</hfoption>
</hfoptions>
### Working with depth
The Intel RealSense and Reachy 2 cameras can capture both color and depth in lockstep. Calling `read()` returns the **color** frame as `(H, W, 3)` `uint8`. Calling `read_depth()` returns the **depth map** as `(H, W, 1)` `uint16`, where each pixel value is the distance from the sensor expressed in **millimetres**. A pixel value of `0` typically means "no measurement available" (out-of-range, occluded, or low-confidence).
During recording, the control loop peeks the freshest buffered frames non-blockingly via `read_latest()` (color) and `read_latest_depth()` (depth), adding the depth map as a sibling feature (e.g. `front_depth` next to `front`).
For how depth streams are stored and encoded when recording a dataset, see the [Depth streams](./video_encoding_parameters#depth-streams) section of the video encoding guide.
## Use your phone's camera
<hfoptions id="use phone">
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@@ -89,6 +89,36 @@ Control the data recording flow using keyboard shortcuts:
- Press **Left Arrow (`←`)**: Delete current episode and retry.
- Press **Escape (`ESC`)**: Stop, encode videos, and upload.
### Recording depth
Intel RealSense cameras (`type: intelrealsense`) record a depth stream when you set `use_depth: true`. Depth is quantized to 12-bit codes and stored as its own video.
```bash
lerobot-record \
... \
--robot.cameras="{ head: {type: intelrealsense, serial_number_or_name: \"0123456789\", width: 640, height: 480, fps: 30, use_depth: true} }" \
--dataset.repo_id=${HF_USER}/so101_depth_test \
--dataset.single_task="put the red brick in a bowl" \
--dataset.depth_encoder.depth_min=0.01 \
--dataset.depth_encoder.depth_max=10.0 \
--dataset.depth_encoder.shift=0.0 \
--dataset.depth_encoder.use_log=true
```
### Video encoding parameters
RGB and depth streams are encoded independently via the `--dataset.rgb_encoder.*` and `--dataset.depth_encoder.*` keys.
```bash
lerobot-record \
... \
--dataset.rgb_encoder.vcodec=h264 \
--dataset.rgb_encoder.pix_fmt=yuv420p \
--dataset.rgb_encoder.crf=23 \
--dataset.depth_encoder.vcodec=hevc \
--dataset.depth_encoder.extra_options='{"x265-params": "lossless=1"}'
```
### Training
Depending on your hardware training the policy might take a few hours. That's how you train simple `ACT` policy:
@@ -120,6 +150,14 @@ lerobot-train \
--steps=20000
```
No local GPU? Add `--job.target=<flavor>` (e.g. `a10g-small`) to either command and `lerobot-train` runs it on [Hugging Face Jobs](https://huggingface.co/docs/hub/jobs) instead — it uploads a local-only dataset for you and pushes the trained model. List flavors with `hf jobs hardware`.
To resume, point `--config_path` at a checkpoint and add `--resume=true`. It accepts a local path or a Hub repo id (the latest checkpoint is fetched), and works locally or on a job by adding `--job.target=<flavor>`:
```bash
lerobot-train --config_path=${HF_USER}/policy_test --resume=true --job.target=a10g-small
```
### Inference
Inference means running the trained policy/model on a robot. For that we use `lerobot-rollout`. You will need to provide a path to your policy. It can be a local path or a path to Hugging Face for example "lerobot/folding_latest". Your cameras configuration needs to match what was used when collecting the dataset. Duration is in seconds if unspecified, it will run forever.
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@@ -194,7 +194,7 @@ lerobot-record \
--dataset.single_task="Navigate around obstacles" \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--display_data=true
```
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@@ -193,7 +193,7 @@ To learn more about training policies with LeRobot, please refer to the training
- [SmolVLA](./smolvla)
- [Pi0.5](./pi05)
- [GR00T N1.5](./groot)
- [GR00T N1.7](./groot)
Sample IsaacLab Arena datasets are available on HuggingFace Hub for experimentation:
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@@ -0,0 +1,191 @@
# EVO1
EVO1 is a Vision-Language-Action policy for robot control built around an InternVL3 backbone and a continuous flow-matching action head. This LeRobot integration exposes EVO1 as a standard policy type so it can be trained and evaluated with the usual LeRobot dataset, checkpoint, and processor APIs.
## Model Overview
The policy embeds one or more camera images and the language task prompt with InternVL3, pads robot state/action vectors to fixed maximum dimensions, and predicts future action chunks with a flow-matching action head. During inference, the policy samples an action chunk and returns `n_action_steps` actions from that chunk before sampling again.
### What the LeRobot Integration Covers
- Standard `policy.type=evo1` configuration through LeRobot
- InternVL3 image/text embedding with optional FlashAttention fallback
- Stage-based finetuning controls for action-head-only and VLM finetuning runs
- Continuous flow-matching action prediction
- Checkpoint save/load through LeRobot policy APIs
- Training with `lerobot-train` and evaluation with standard policy inference APIs
The broader EVO1 project may include additional training scripts and dataset tooling. This page focuses on the LeRobot robot-control policy path.
## Installation Requirements
1. Install LeRobot by following the [Installation Guide](./installation).
2. Install EVO1 dependencies:
```bash
pip install -e ".[evo1]"
```
For LIBERO evaluation, install the LIBERO extra as well:
```bash
pip install -e ".[evo1,libero]"
```
3. Install a `flash-attn` wheel only if it is compatible with your Python, PyTorch, CUDA, and GPU stack. EVO1 falls back to standard attention when `flash_attn` is not available.
EVO1 uses the native Hugging Face `transformers` InternVL implementation, so `policy.vlm_model_name` must point to a natively converted checkpoint such as `OpenGVLab/InternVL3-1B-hf` (note the `-hf` suffix). The first run may download the configured VLM checkpoint unless `policy.vlm_model_name` points to a local model directory.
## Data Requirements
EVO1 expects a LeRobot dataset with:
- One to `policy.max_views` visual observations, for example `observation.images.image`
- `observation.state`
- `action`
- A language task instruction in the dataset `task` field, or another field configured with `policy.task_field`
State and action vectors are padded to `policy.max_state_dim` and `policy.max_action_dim`. Predictions are cropped back to the dataset action dimension before being returned.
## Usage
To use EVO1 in a LeRobot configuration, specify:
```python
policy.type=evo1
```
By default, a new EVO1 policy initializes its VLM from:
```python
policy.vlm_model_name=OpenGVLab/InternVL3-1B-hf
```
Once a LeRobot-format EVO1 checkpoint is available, load it with:
```python
policy.path=your-org/your-evo1-checkpoint
```
## Training
### Stage 1
Stage 1 freezes the VLM and trains the action head:
```bash
lerobot-train \
--dataset.repo_id=your_org/your_dataset \
--policy.type=evo1 \
--policy.training_stage=stage1 \
--policy.vlm_model_name=OpenGVLab/InternVL3-1B-hf \
--policy.device=cuda \
--policy.chunk_size=50 \
--policy.n_action_steps=50 \
--policy.max_state_dim=24 \
--policy.max_action_dim=24 \
--policy.optimizer_lr=1e-5 \
--batch_size=4 \
--steps=5000 \
--output_dir=./outputs/evo1_stage1
```
### Stage 2
Stage 2 finetunes the VLM branches and action head. A common workflow starts from a Stage 1 checkpoint:
```bash
lerobot-train \
--dataset.repo_id=your_org/your_dataset \
--policy.path=./outputs/evo1_stage1/checkpoints/005000/pretrained_model \
--policy.training_stage=stage2 \
--policy.vlm_model_name=OpenGVLab/InternVL3-1B-hf \
--policy.device=cuda \
--policy.chunk_size=50 \
--policy.n_action_steps=50 \
--policy.max_state_dim=24 \
--policy.max_action_dim=24 \
--policy.optimizer_lr=1e-5 \
--batch_size=4 \
--steps=80000 \
--output_dir=./outputs/evo1_stage2
```
By default, `policy.training_stage` reapplies the finetuning defaults for that stage. This is important when
starting Stage 2 from a Stage 1 checkpoint, because the Stage 1 checkpoint config stores the VLM finetuning
flags as disabled. These stage defaults take precedence over saved or manually supplied `policy.finetune_*`
flags unless `policy.apply_training_stage_defaults=false`, so set that flag only when manually controlling
every finetuning flag.
### Key Training Parameters
| Parameter | Default | Description |
| --------------------------------------------- | --------------------------- | ----------------------------------------------------------------- |
| `policy.vlm_model_name` | `OpenGVLab/InternVL3-1B-hf` | Natively converted InternVL3 checkpoint or local model directory |
| `policy.training_stage` | `stage1` | `stage1` trains the action head; `stage2` finetunes VLM branches |
| `policy.apply_training_stage_defaults` | `true` | Reapplies stage finetuning defaults after loading a checkpoint |
| `policy.vlm_num_layers` | `14` | Number of InternVL3 language layers kept for the policy |
| `policy.vlm_dtype` | `bfloat16` | Requested VLM dtype |
| `policy.use_flash_attn` | `true` | Requests FlashAttention when installed; otherwise falls back |
| `policy.enable_gradient_checkpointing` | `true` | Enables checkpointing on supported InternVL3 modules |
| `policy.gradient_checkpointing_use_reentrant` | `false` | Reentrant setting passed to gradient checkpointing when supported |
| `policy.chunk_size` | `50` | Number of future actions predicted per chunk |
| `policy.n_action_steps` | `50` | Number of actions consumed from a sampled chunk |
| `policy.max_state_dim` | `24` | State padding dimension |
| `policy.max_action_dim` | `24` | Action padding dimension |
| `policy.postprocess_action_dim` | `null` | Optional action dimension returned after EVO1 postprocessing |
| `policy.binarize_gripper` | `false` | Binarizes the postprocessed gripper channel for LIBERO-style eval |
| `policy.task_field` | `task` | Batch field used as the language prompt |
## Inference
Try it out with a trained EVO1 checkpoint:
```bash
lerobot-rollout \
--policy.path=your-org/your-evo1-checkpoint \
--inference.type=rtc \ # optional
...
```
## Results
### LIBERO Evaluation
> [!NOTE]
> Benchmark results for a `lerobot`-hosted LIBERO checkpoint trained with this implementation
> will be added once training completes.
The official EVO1 LIBERO rollout protocol uses the raw LIBERO camera feature names
(`observation.images.agentview_image` and `observation.images.robot0_eye_in_hand_image`), replans every
14 actions, and binarizes the gripper command before stepping the simulator. The EVO1 policy postprocessor
can crop the padded 24D action back to the 7D LIBERO action space and apply that gripper binarization. To
evaluate a LIBERO checkpoint under the same one-episode-per-task setting, keep the raw camera names instead
of the default `image`/`image2` mapping and set the LIBERO action postprocessing flags:
```bash
lerobot-eval \
--policy.path=your-org/your-evo1-libero-checkpoint \
--policy.vlm_model_name=OpenGVLab/InternVL3-1B-hf \
--policy.device=cuda \
--policy.use_flash_attn=true \
--policy.n_action_steps=14 \
--policy.postprocess_action_dim=7 \
--policy.binarize_gripper=true \
--env.type=libero \
--env.task=libero_object \
--env.camera_name_mapping="{agentview_image: agentview_image, robot0_eye_in_hand_image: robot0_eye_in_hand_image}" \
--env.observation_height=448 \
--env.observation_width=448 \
--eval.batch_size=1 \
--eval.n_episodes=1
```
## References
- [EVO1 repository](https://github.com/MINT-SJTU/Evo-1)
- [InternVL3-1B-hf](https://huggingface.co/OpenGVLab/InternVL3-1B-hf)
## License
This LeRobot integration follows the Apache 2.0 License used by LeRobot. Check the upstream EVO1 and InternVL3 model pages for the licenses of released checkpoints and data.
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# FastWAM
FastWAM is a World Action Model policy for robot control. The LeRobot integration exposes FastWAM through the standard policy API so it can be configured with `policy.type=fastwam`, trained with `lerobot-train`, and loaded through the LeRobot pretrained policy interface.
## Model Overview
FastWAM keeps video modeling during training, but uses direct action prediction at inference time instead of iteratively generating future observations. This LeRobot policy wraps the FastWAM action model, adapts LeRobot batches to FastWAM training samples, and provides the standard processor pipeline for normalization and action postprocessing.
The implementation initializes the visual world-model components from `Wan-AI/Wan2.2-TI2V-5B` by default and predicts action chunks with shape `[batch, action_horizon, action_dim]`.
### What the LeRobot Integration Covers
- Standard `policy.type=fastwam` configuration through LeRobot
- Image, state, action, and language-task batch adaptation
- Action chunk inference through `select_action` and `predict_action_chunk`
- Checkpoint save/load through the LeRobot policy APIs
- Configurable LIBERO gripper action postprocessing
## Installation Requirements
Install LeRobot from source, then install FastWAM dependencies:
```bash
pip install -e ".[fastwam]"
```
This installs the FastWAM policy extra from `pyproject.toml`: `transformers`,
`diffusers`, `ftfy`, and `regex`, plus LeRobot's base dependencies.
For LIBERO evaluation, install the benchmark dependencies too:
```bash
pip install -e ".[fastwam,libero]"
```
This installs both extras. In addition to the FastWAM dependencies above, the
`libero` extra installs LeRobot dataset dependencies, `hf-libero` on Linux, and
`scipy`.
FastWAM uses the Wan2.2 TI2V backbone. The default model id is:
```python
policy.model_id=Wan-AI/Wan2.2-TI2V-5B
```
## Data Requirements
FastWAM expects a LeRobot dataset with:
- one or more visual observations whose widths concatenate to `policy.image_size[1]`
- `observation.state` when `policy.proprio_dim` is not `None`
- `action`
- a language task instruction through the dataset task field, or precomputed `context` and `context_mask` tensors
The default visual setup is one image feature named `observation.images.image` with shape `(3, 224, 448)`. If the dataset uses two cameras, configure `policy.input_features` so their heights match `224` and their widths sum to `448`.
## Usage
Create a new FastWAM policy with:
```bash
lerobot-train \
--dataset.repo_id=your-org/your-dataset \
--policy.type=fastwam \
--policy.action_dim=7 \
--policy.proprio_dim=8 \
--policy.action_horizon=32 \
--policy.n_action_steps=10 \
--policy.image_size='[224,448]' \
--output_dir=./outputs/fastwam_training \
--job_name=fastwam_training \
--steps=300000 \
--batch_size=8 \
--policy.device=cuda
```
Evaluate an existing LeRobot-format checkpoint on LIBERO-10 with:
```bash
lerobot-eval \
--policy.path=ZibinDong/fastwam_libero_uncond_2cam224 \
--policy.device=cuda \
--policy.torch_dtype=float32 \
--policy.n_action_steps=10 \
--env.type=libero \
--env.task=libero_10 \
--env.observation_height=224 \
--env.observation_width=224 \
--eval.batch_size=1 \
--eval.n_episodes=50 \
--seed=0 \
--env.episode_length=600
```
For `libero_goal`, `libero_spatial`, and `libero_object`, use
`--env.episode_length=300`.
For real-robot rollout, use the same checkpoint path:
```bash
lerobot-rollout \
--robot.type=so101_follower \
--robot.port=/dev/ttyACM0 \
--policy.path=your-org/fastwam-real-robot
```
## Configuration Notes
### Image Features
`policy.image_size` is the size of the concatenated FastWAM image tensor as `(height, width)`. Each configured image feature must have shape `(3, height, camera_width)`, and all camera widths must sum to the configured width.
### Action Chunking
`policy.action_horizon` controls the number of future actions supervised during training and predicted during inference. `policy.n_action_steps` controls how many actions are consumed before the policy predicts a fresh chunk. `policy.n_action_steps` must be less than or equal to `policy.action_horizon`.
### Wan Components
FastWAM loads the Wan VAE, video DiT, text encoder, and tokenizer from the configured Wan model directory or Hugging Face Hub model id. LeRobot-format FastWAM checkpoints saved by `save_pretrained` also copy the local Wan component files needed by `from_pretrained`.
### Attention Backend
FastWAM's DiT uses PyTorch's `scaled_dot_product_attention` (SDPA) for all attention. It does **not** use FlashAttention: its Mixture-of-Transformers (MoT) routing needs arbitrary boolean `[query, key]` attention masks, which the FlashAttention varlen API cannot express. Installing the `flash-attn` package therefore has no effect on the FastWAM path. (Note that SDPA itself may still select PyTorch's own flash / memory-efficient / math kernel internally — this is unrelated to the `flash-attn` package.)
### LIBERO Action Toggle
FastWAM LIBERO checkpoints use `policy.toggle_action_dimensions=[-1]` by
default to match the gripper action convention used by the original FastWAM
evaluation pipeline:
```bash
--policy.toggle_action_dimensions='[-1]'
```
## Results
Evaluated on LIBERO with [`ZibinDong/fastwam_libero_uncond_2cam224`](https://huggingface.co/ZibinDong/fastwam_libero_uncond_2cam224):
| Suite | Success rate | n_episodes |
| -------------- | -----------: | ---------: |
| libero_spatial | 97.6% | 500 |
| libero_object | 99.0% | 500 |
| libero_goal | 95.0% | 500 |
| libero_10 | 94.0% | 500 |
| **average** | **96.4%** | 2000 |
Reproduce: `lerobot-eval --policy.path=ZibinDong/fastwam_libero_uncond_2cam224 --policy.device=cuda --policy.torch_dtype=float32 --policy.n_action_steps=10 --env.type=libero --env.task=libero_spatial --env.observation_height=256 --env.observation_width=256 --eval.batch_size=1 --eval.n_episodes=50 --seed=0 --env.episode_length=300` (1x H20 140 GB).
## References
- [Fast-WAM paper](https://arxiv.org/abs/2603.16666)
- [Fast-WAM project page](https://yuantianyuan01.github.io/FastWAM/)
- [Fast-WAM code](https://github.com/yuantianyuan01/FastWAM)
- [Released upstream checkpoints](https://huggingface.co/yuanty/fastwam)
- [Wan2.2 TI2V 5B](https://huggingface.co/Wan-AI/Wan2.2-TI2V-5B)
## Citation
```bibtex
@article{yuan2026fastwam,
title = {Fast-WAM: Do World Action Models Need Test-time Future Imagination?},
author = {Tianyuan Yuan and Zibin Dong and Yicheng Liu and Hang Zhao},
journal = {arXiv preprint arXiv:2603.16666},
year = {2026},
url = {https://arxiv.org/abs/2603.16666}
}
```
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@@ -1,16 +1,19 @@
# GR00T N1.5 Policy
# GR00T Policy
GR00T N1.5 is an open foundation model from NVIDIA designed for generalized humanoid robot reasoning and skills. It is a cross-embodiment model that accepts multimodal input, including language and images, to perform manipulation tasks in diverse environments.
GR00T is an NVIDIA foundation model family for generalized humanoid robot reasoning and skills. It is a cross-embodiment policy that accepts multimodal input, including language, images, and proprioception, to perform manipulation tasks in diverse environments.
This document outlines the specifics of its integration and usage within the LeRobot framework.
LeRobot integrates GR00T N1.7 through the `groot` policy type.
> [!WARNING]
> **Breaking change:** GR00T N1.5 support was removed from LeRobot, and current releases support GR00T N1.7 only. N1.5 checkpoints and configs are rejected with a migration note. To keep using an N1.5 checkpoint, pin the last release that supports it: `pip install 'lerobot==0.5.1'`. To use the current release, migrate to GR00T N1.7 (base model [`nvidia/GR00T-N1.7-3B`](https://huggingface.co/nvidia/GR00T-N1.7-3B)).
## Model Overview
NVIDIA Isaac GR00T N1.5 is an upgraded version of the GR00T N1 foundation model. It is built to improve generalization and language-following abilities for humanoid robots.
GR00T N1.7 uses a Cosmos-Reason2/Qwen3-VL backbone and provides checkpoints for SimplerEnv, DROID, and LIBERO.
Developers and researchers can post-train GR00T N1.5 with their own real or synthetic data to adapt it for specific humanoid robots or tasks.
Developers and researchers can post-train GR00T with their own real or synthetic data to adapt it for specific humanoid robots or tasks.
GR00T N1.5 (specifically the GR00T-N1.5-3B model) is built using pre-trained vision and language encoders. It utilizes a flow matching action transformer to model a chunk of actions, conditioned on vision, language, and proprioception.
GR00T uses pre-trained vision and language encoders with a flow matching action transformer to model a chunk of actions conditioned on vision, language, and proprioception.
<img
src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/lerobot/lerobot-groot-paper1%20(1).png"
@@ -28,33 +31,24 @@ This approach allows the model to be highly adaptable through post-training for
## Installation Requirements
As of today, GR00T N1.5 requires flash attention for it's internal working.
We are working on making this optional, but in the meantime that means that we require an extra installation step and it can only be used in CUDA enabled devices.
1. Following the Environment Setup of our [Installation Guide](./installation). **Attention** don't install `lerobot` in this step.
2. Install [Flash Attention](https://github.com/Dao-AILab/flash-attention) by running:
GR00T is intended for NVIDIA GPU-accelerated systems. Install LeRobot with the GR00T extra:
```bash
# Check https://pytorch.org/get-started/locally/ for your system
pip install "torch>=2.2.1,<2.8.0" "torchvision>=0.21.0,<0.23.0" # --index-url https://download.pytorch.org/whl/cu1XX
pip install ninja "packaging>=24.2,<26.0" # flash attention dependencies
pip install "flash-attn>=2.5.9,<3.0.0" --no-build-isolation
python -c "import flash_attn; print(f'Flash Attention {flash_attn.__version__} imported successfully')"
pip install "lerobot[groot]"
```
3. Install LeRobot by running:
For a source checkout:
```bash
pip install lerobot[groot]
pip install -e ".[groot]"
```
## Usage
To use GR00T in your LeRobot configuration, specify the policy type as:
To use GR00T N1.7:
```python
policy.type=groot
```bash
--policy.type=groot
```
## Training
@@ -63,72 +57,171 @@ policy.type=groot
Here's a complete training command for finetuning the base GR00T model on your own dataset:
This command is using the `new_embodiment` flag, which is used for the SO-101 robot, [read more about how GR00T handles different embodiments.](https://github.com/NVIDIA/Isaac-GR00T/blob/main/getting_started/policy.md#--embodiment-tag).
```bash
# Using a multi-GPU setup
accelerate launch \
--multi_gpu \
--num_processes=$NUM_GPUS \
$(which lerobot-train) \
--output_dir=$OUTPUT_DIR \
--save_checkpoint=true \
--batch_size=$BATCH_SIZE \
--steps=$NUM_STEPS \
--save_freq=$SAVE_FREQ \
--log_freq=$LOG_FREQ \
--policy.push_to_hub=true \
# install extra deps for training
pip install "lerobot[training]"
hf auth login
wandb login
export DATASET_NAME=your_data_set
export HF_USER=your_hf_username
export DATASET=$HF_USER/$DATASET_NAME
export REPO_ID="${DATASET}_GR00T17" #this is the model that will be uploaded to huggingface
export OUTPUT_DIR=outputs/train/$REPO_ID
lerobot-train \
--dataset.repo_id=$DATASET \
--dataset.image_transforms.enable=true \
--policy.type=groot \
--policy.device=cuda \
--policy.base_model_path=nvidia/GR00T-N1.7-3B \
--policy.embodiment_tag=new_embodiment \
--policy.chunk_size=16 \
--policy.n_action_steps=16 \
--policy.use_relative_actions=true \
--policy.relative_exclude_joints='["gripper"]' \
--policy.use_bf16=true \
--policy.push_to_hub=true \
--policy.repo_id=$REPO_ID \
--policy.tune_diffusion_model=false \
--dataset.repo_id=$DATASET_ID \
--seed=42 \
--batch_size=64 \
--steps=20000 \
--save_checkpoint=true \
--save_freq=5000 \
--use_policy_training_preset=true \
--env_eval_freq=0 \
--eval_steps=0 \
--log_freq=10 \
--output_dir=$OUTPUT_DIR \
--job_name=$DATASET \
--wandb.enable=true \
--wandb.disable_artifact=true \
--job_name=$JOB_NAME
--wandb.disable_artifact=true
```
## Performance Results
### Libero Benchmark Results
### LIBERO Benchmark Results
> [!NOTE]
> Follow our instructions for Libero usage: [Libero](./libero)
> Follow the [LIBERO](./libero) setup instructions before running `lerobot-eval`.
GR00T has demonstrated strong performance on the Libero benchmark suite. To compare and test its LeRobot implementation, we finetuned the GR00T N1.5 model for 30k steps on the Libero dataset and compared the results to the GR00T reference results.
GR00T N1.7 has demonstrated strong performance on the LIBERO benchmark suite. To reproduce LeRobot results, follow the instructions in the [LIBERO](./libero) section.
| Benchmark | LeRobot Implementation | GR00T Reference |
| ------------------ | ---------------------- | --------------- |
| **Libero Spatial** | 82.0% | 92.0% |
| **Libero Object** | 99.0% | 92.0% |
| **Libero Long** | 82.0% | 76.0% |
| **Average** | 87.0% | 87.0% |
### Train on LIBERO
These results demonstrate GR00T's strong generalization capabilities across diverse robotic manipulation tasks. To reproduce these results, you can follow the instructions in the [Libero](https://huggingface.co/docs/lerobot/libero) section.
Example training command for a LIBERO suite (here `libero_spatial`):
```bash
IMAGE_TRANSFORMS='{
"brightness": {"weight": 1.0, "type": "ColorJitter", "kwargs": {"brightness": [0.7, 1.3]}},
"contrast": {"weight": 1.0, "type": "ColorJitter", "kwargs": {"contrast": [0.6, 1.4]}},
"saturation": {"weight": 1.0, "type": "ColorJitter", "kwargs": {"saturation": [0.5, 1.5]}},
"hue": {"weight": 1.0, "type": "ColorJitter", "kwargs": {"hue": [-0.08, 0.08]}}
}'
lerobot-train \
--dataset.repo_id=IPEC-COMMUNITY/libero_spatial_no_noops_1.0.0_lerobot \
--dataset.root=/datasets/libero_spatial \
--dataset.revision=main \
--dataset.video_backend=pyav \
--dataset.image_transforms.enable=true \
--dataset.image_transforms.max_num_transforms=4 \
--dataset.image_transforms.tfs="$IMAGE_TRANSFORMS" \
--policy.type=groot \
--policy.base_model_path=nvidia/GR00T-N1.7-3B \
--policy.embodiment_tag=libero_sim \
--policy.push_to_hub=false \
--policy.use_relative_actions=false \
--policy.max_steps=20000 \
--batch_size=320 \
--steps=20000 \
--save_freq=2000 \
--env_eval_freq=0 \
--eval_steps=0 \
--log_freq=10 \
--wandb.enable=true \
--wandb.project=lerobot \
--wandb.mode=online \
--wandb.disable_artifact=true \
--num_workers=4 \
--prefetch_factor=2 \
--persistent_workers=true \
--output_dir=$OUTPUT_DIR \
--job_name=$JOB_NAME
```
This will follow the recipe found [here](https://github.com/NVIDIA/Isaac-GR00T/blob/main/examples/LIBERO/README.md).
### GR00T N1.7 LIBERO Results
Preliminary LeRobot integration results (GR00T-LeRobot, `eval.n_episodes >= 50` per suite):
| Suite | Success rate | Checkpoint |
| ---------------- | -----------: | ------------------------------------------------------------------------------------------------------------- |
| LIBERO Spatial | 91% | [nvidia/gr00t17-lerobot-libero_spatial-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_spatial-640) |
| LIBERO Object | 81% | [nvidia/gr00t17-lerobot-libero_object-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_object-640) |
| LIBERO Goal | 97% | [nvidia/gr00t17-lerobot-libero_goal-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_goal-640) |
| LIBERO 10 (Long) | 84% | [nvidia/gr00t17-lerobot-libero_10-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_10-640) |
| **Average** | **88.25%** | |
```bash
export MODEL_ID=your_trained_model_on_huggingface
lerobot-eval \
--policy.type=groot \
--policy.base_model_path=$MODEL_ID \
--policy.embodiment_tag=libero_sim \
--env.type=libero \
--env.task=libero_spatial \
--eval.n_episodes=50
```
Use `eval.n_episodes >= 50` per suite when reporting success rates.
### Evaluate in your hardware setup
Once you have trained your model using your parameters you can run inference in your downstream task. Follow the instructions in [Policy Deployment (lerobot-rollout)](./inference). For example:
```bash
lerobot-rollout\
--strategy.type=sentry \
--strategy.upload_every_n_episodes=5 \
--robot.type=bi_so_follower \
--robot.left_arm_port=/dev/ttyACM1 \
--robot.right_arm_port=/dev/ttyACM0 \
--robot.id=bimanual_follower \
--robot.cameras='{ right: {"type": "opencv", "index_or_path": 0, "width": 640, "height": 480, "fps": 30},
left: {"type": "opencv", "index_or_path": 2, "width": 640, "height": 480, "fps": 30},
top: {"type": "opencv", "index_or_path": 4, "width": 640, "height": 480, "fps": 30},
}' \
# install extra deps for roullout and real hardware
pip install "lerobot[feetech,viz]"
export MODEL_ID=your_trained_model_on_huggingface
# make sure that camera index matches your setup!
# find index using `uv run lerobot-find-cameras opencv`
WRIST_CAM='wrist: {type: opencv, index_or_path: 2, width: 640, height: 480, fps: 30, fourcc: "MJPG"}'
FRONT_CAM='front: {type: opencv, index_or_path: 0, width: 640, height: 480, fps: 30, fourcc: "MJPG"}'
export ROBOT_CAMERAS="{ $WRIST_CAM, $FRONT_CAM }"
export ROBOT_ID=follower_robot
export ROBOT_PORT=/dev/ttyACM0
uv run lerobot-rollout \
--strategy.type=base \
--policy.path=$MODEL_ID \
--policy.base_model_path=nvidia/GR00T-N1.7-3B \
--policy.n_action_steps=8 \
--robot.type=so101_follower \
--robot.port=$ROBOT_PORT \
--robot.id=$ROBOT_ID \
--robot.cameras="$ROBOT_CAMERAS" \
--task="place the vial in the rack" \
--duration=60 \
--device=cuda \
--display_data=true \
--dataset.repo_id=<user>/eval_groot-bimanual \
--dataset.single_task="Grab and handover the red cube to the other arm" \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
# --dataset.camera_encoder.vcodec=auto \
--policy.path=<user>/groot-bimanual \ # your trained model
--duration=600
--inference.type=rtc \
--inference.rtc.enabled=True \ # set to False if it causes inference instability
--inference.rtc.execution_horizon=8 \
--inference.queue_threshold=0
```
> [!NOTE]
> Value of `inference.queue_threshold` should not exceed 5 to ensure stable inference.
## License
This model follows NVIDIA's proprietary license, consistent with the original [GR00T repository](https://github.com/NVIDIA/Isaac-GR00T). Future versions (starting from N1.7) will follow **Apache 2.0 License**.
GR00T N1.7 is released under the [NVIDIA Open Model License Agreement](https://www.nvidia.com/en-us/agreements/enterprise-software/nvidia-open-model-license/).
+9 -8
View File
@@ -82,17 +82,18 @@ VRAM is the first filter. Within a tier, pick by budget and availability — the
### Hugging Face Jobs
[Hugging Face Jobs](https://huggingface.co/docs/hub/jobs) lets you run training on managed HF infrastructure, billed by the second. The repo publishes a ready-to-use image: **`huggingface/lerobot-gpu:latest`**, rebuilt **every night at 02:00 UTC from `main`** ([`docker_publish.yml`](https://github.com/huggingface/lerobot/blob/main/.github/workflows/docker_publish.yml)) — so it tracks the current state of the repo, not a tagged release.
[Hugging Face Jobs](https://huggingface.co/docs/hub/jobs) lets you run training on managed HF infrastructure, billed by the second, without owning a GPU. `lerobot-train` submits and streams the job for you — just add `--job.target=<flavor>` to a normal training command:
```bash
hf jobs run --flavor a10g-large huggingface/lerobot-gpu:latest \
bash -c "nvidia-smi && lerobot-train \
--policy.type=act --dataset.repo_id=<USER>/<DATASET> \
--policy.repo_id=<USER>/act_<task> --batch_size=8 --steps=50000"
lerobot-train \
--policy.type=act --dataset.repo_id=<USER>/<DATASET> \
--policy.repo_id=<USER>/act_<task> \
--job.target=a10g-large
```
Notes:
- The leading `nvidia-smi` is a quick sanity check that CUDA is visible inside the container — useful to fail fast if the flavor or driver mismatched.
- The default Job timeout is 30 minutes; pass `--timeout 4h` (or longer) for real training.
- `--flavor` maps onto the table above: `t4-small`/`t4-medium` (T4, ACT only), `l4x1`/`l4x4` (L4 24 GB), `a10g-small/large/largex2/largex4` (A10G 24 GB scaled out), `a100-large` (A100). For the current full catalogue + pricing see [https://huggingface.co/docs/hub/jobs](https://huggingface.co/docs/hub/jobs).
- Run `hf auth login` once before submitting, the job runs under your token.
- `--job.target` maps onto the table above: `t4-small`/`t4-medium` (T4, ACT only), `l4x1`/`l4x4` (L4 24 GB), `a10g-small/large/largex2/largex4` (A10G 24 GB scaled out), `a100-large` (A100). List the current catalogue with pricing via `hf jobs hardware`, or see [https://huggingface.co/docs/hub/jobs](https://huggingface.co/docs/hub/jobs).
- The job defaults to a `2d` (48h) timeout. Override it with `--job.timeout=4h` (or any other valid duration string) to shorten or extend the timeout. The job automatically stops when the command completes.
- For the full walkthrough — dataset upload, checkpoint streaming, resuming a run on a job — see the [imitation-learning training guide](./il_robots#train-using-hugging-face-jobs).
+1 -1
View File
@@ -719,7 +719,7 @@ Example configuration for training the [reward classifier](https://huggingface.c
"num_workers": 4,
"steps": 5000,
"log_freq": 10,
"eval_freq": 1000,
"env_eval_freq": 1000,
"save_freq": 1000,
"save_checkpoint": true,
"seed": 2,
+2 -2
View File
@@ -232,7 +232,7 @@ lerobot-record \
--dataset.private=true \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--display_data=true
```
@@ -278,6 +278,6 @@ lerobot-record \
--dataset.num_episodes=10 \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--policy.path=outputs/train/hopejr_hand/checkpoints/last/pretrained_model
```
+58 -72
View File
@@ -126,7 +126,7 @@ import time
from lerobot.teleoperators.so_leader import SO101Leader, SO101LeaderConfig
from lerobot.robots.so_follower import SO101Follower, SO101FollowerConfig
from lerobot.cameras.opencv import OpenCVCameraConfig
from lerobot.utils.visualization_utils import init_rerun, log_rerun_data, shutdown_rerun
from lerobot.utils.visualization_utils import init_visualization, log_visualization_data, shutdown_visualization
robot_config = SO101FollowerConfig(
port="/dev/tty.usbmodem5AB90687491",
@@ -142,7 +142,7 @@ teleop_config = SO101LeaderConfig(
id="my_leader_arm",
)
init_rerun(session_name="teleoperation")
init_visualization("rerun", session_name="teleoperation") # pass "foxglove" to stream to Foxglove instead
robot = SO101Follower(robot_config)
teleop_device = SO101Leader(teleop_config)
@@ -158,7 +158,7 @@ while True:
observation = robot.get_observation()
action = teleop_device.get_action()
robot.send_action(action)
log_rerun_data(observation=observation, action=action)
log_visualization_data("rerun", observation=observation, action=action)
elapsed_time = time.perf_counter() - start_time
sleep_time = TIME_PER_FRAME - elapsed_time
@@ -207,7 +207,7 @@ lerobot-record \
--dataset.num_episodes=5 \
--dataset.single_task="Grab the black cube" \
--dataset.streaming_encoding=true \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--dataset.encoder_threads=2
```
</hfoption>
@@ -223,7 +223,7 @@ from lerobot.teleoperators.so_leader.config_so_leader import SO101LeaderConfig
from lerobot.teleoperators.so_leader.so_leader import SO101Leader
from lerobot.common.control_utils import init_keyboard_listener
from lerobot.utils.utils import log_say
from lerobot.utils.visualization_utils import init_rerun
from lerobot.utils.visualization_utils import init_visualization
from lerobot.scripts.lerobot_record import record_loop
from lerobot.processor import make_default_processors
@@ -270,7 +270,7 @@ def main():
# Initialize the keyboard listener and rerun visualization
_, events = init_keyboard_listener()
init_rerun(session_name="recording")
init_visualization("rerun", session_name="recording")
# Connect the robot and teleoperator
robot.connect()
@@ -390,9 +390,17 @@ Set the flow of data recording using command-line arguments:
Control the data recording flow using keyboard shortcuts:
- Press **Right Arrow (`→`)**: Early stop the current episode or reset time and move to the next.
- Press **Left Arrow (`←`)**: Cancel the current episode and re-record it.
- Press **Escape (`ESC`)**: Immediately stop the session, encode videos, and upload the dataset.
- Press **Right Arrow (`→`)** or **`n`**: Early stop the current episode or reset time and move to the next.
- Press **Left Arrow (`←`)** or **`r`**: Cancel the current episode and re-record it.
- Press **Escape (`ESC`)** or **`q`**: Immediately stop the session, encode videos, and upload the dataset.
<Tip>
These control-flow shortcuts work on **X11, Wayland, and headless/SSH** sessions. When a global keyboard backend isn't available (Wayland, a headless machine, or macOS without Accessibility permission), `lerobot-record` automatically reads the same keys from the terminal — launch it from an interactive terminal and keep it focused. You can also use the letter equivalents **`n`** (next, same as `→`), **`r`** (re-record, same as `←`) and **`q`** (quit, same as `ESC`). No `$DISPLAY` setup is required.
This applies to the recording control flow only. Keyboard **teleoperation** (driving the robot with the keyboard) still needs a global key backend, so it works only on an X11 session, a Windows desktop, or macOS with Accessibility/Input Monitoring granted — not on Wayland or headless sessions.
</Tip>
#### Tips for gathering data
@@ -406,7 +414,7 @@ If you want to dive deeper into this important topic, you can check out the [blo
#### Troubleshooting:
- On Linux, if the left and right arrow keys and escape key don't have any effect during data recording, make sure you've set the `$DISPLAY` environment variable. See [pynput limitations](https://pynput.readthedocs.io/en/latest/limitations.html#linux).
- On Linux, the recording control-flow keys (arrow keys, Escape) work on X11, Wayland, and headless/SSH sessions as long as `lerobot-record` runs in an interactive terminal — no `$DISPLAY` setup is needed. If the keys have no effect, make sure you are in an interactive (TTY) terminal, not a piped/non-TTY session, and that it is focused; the letter equivalents `n` / `r` / `q` also work. Keyboard _teleoperation_ (as opposed to the recording control flow) still requires a global key backend — an X11 session, a Windows desktop, or macOS with Accessibility/Input Monitoring granted — and is unavailable on Wayland or headless machines. See [pynput limitations](https://pynput.readthedocs.io/en/latest/limitations.html#linux).
## Visualize a dataset
@@ -506,6 +514,12 @@ lerobot-train \
--resume=true
```
`--config_path` also accepts a **Hub repo id**: if a run pushed its checkpoints to the Hub (with `--save_checkpoint_to_hub=true`), you can resume straight from the repo — its latest checkpoint is downloaded and training continues, restoring the optimizer, scheduler, step counter and data order:
```bash
lerobot-train --config_path=${HF_USER}/my_policy --resume=true
```
If you do not want to push your model to the hub after training use `--policy.push_to_hub=false`.
Additionally you can provide extra `tags` or specify a `license` for your model or make the model repo `private` by adding this: `--policy.private=true --policy.tags=\[ppo,rl\] --policy.license=mit`
@@ -518,78 +532,48 @@ If your local computer doesn't have a powerful GPU you could utilize Google Cola
Hugging Face jobs let's you easily select hardware and run the training in the cloud. So if you don't have a powerful GPU or you need more VRAM or just want to train a model much faster use HF Jobs! It's pay as you go and you simply pay for each second of use, you can see the pricing and additional information [here](https://huggingface.co/docs/hub/jobs).
To run the training use this command:
`lerobot-train` runs locally by default. To run on a HuggingFace GPU, pass `--job.target` with a hardware flavor name:
<hfoptions id="train_with_hf_jobs">
<hfoption id="Command">
```bash
hf jobs run \
--flavor a10g-small \
--timeout 4h \
--secrets HF_TOKEN \
huggingface/lerobot-gpu:latest \
-- \
python -m lerobot.scripts.lerobot_train \
--dataset.repo_id=username/dataset \
--policy.type=act \
--steps=5000 \
--batch_size=16 \
--policy.device=cuda \
--policy.repo_id=username/your_policy \
--log_freq=100
lerobot-train \
--dataset.repo_id=${HF_USER}/so101_test \
--policy.type=act \
--policy.repo_id=${HF_USER}/my_policy \
--job.target=a10g-small
```
</hfoption>
<hfoption id="API example">
<!-- prettier-ignore-start -->
```python
from huggingface_hub import run_job, get_token
List available flavors and pricing with `hf jobs hardware`. The run streams its logs to your terminal; press Ctrl-C to detach (the job keeps running in the cloud). Re-attach or cancel with:
run_name = "act_so101_hf_jobs"
dataset_id = "username/dataset"
user_hub_id = "username"
command_args = [
"python", "-m", "lerobot.scripts.lerobot_train",
"--dataset.repo_id", dataset_id,
"--policy.type", "act",
"--steps", "5000",
"--batch_size", "16",
"--num_workers", "4",
"--policy.device", "cuda",
"--log_freq", "100",
"--save_freq", "1000",
"--save_checkpoint", "true",
"--wandb.enable", "false",
"--policy.repo_id", f"{user_hub_id}/{run_name}"
]
print(f"Submitting job '{run_name}' to Hugging Face Infrastructure...")
job_info = run_job(
image="huggingface/lerobot-gpu:latest",
command=command_args,
flavor="a10g-small",
timeout="4h",
secrets={"HF_TOKEN": get_token()}
)
print("\n🚀 Job successfully launched!")
print(f"🔹 Job ID: {job_info.id}")
print(f"🔗 Live UI Dashboard & Logs: {job_info.url}")
```bash
hf jobs logs <job-id>
hf jobs cancel <job-id>
```
<!-- prettier-ignore-end -->
</hfoption>
</hfoptions>
If your dataset exists only locally (not yet on the Hub), it is automatically pushed to a **private** Hub repo so the job can download it by `repo_id` (nothing is made public). The trained model is pushed to the model repo at the end of the run. To also push every intermediate checkpoint to the Hub as it is saved (so you can monitor progress mid-run), add `--save_checkpoint_to_hub=true` — this requires a runtime image that includes this feature.
You can modify the `--flavor` to use different hardware, for example: `t4-small`, `a100-large`, `h200`. Use `hf jobs hardware` to see the full list with pricing.
Depending on the model you want to train and the hardware you selected you can also modify the `--batch_size` and `--number_of_workers`.
For longer training sessions increase the timeout.
Every job (and any dataset pushed by the run) is tagged `lerobot` so it's easy to find on the Hub. Add your own with `--job.tags '["my-tag"]'`.
Once the training is started you can go to [Jobs](https://huggingface.co/settings/jobs) and see if your jobs is running as well as all the outputs. Sometimes it takes a few minutes to schedule your job so be patient.
By default the job is capped at `2d` (48h) of wall-clock. Override it with an HF Jobs duration string, e.g. `--job.timeout=4h` to fail faster or `--job.timeout=7d` for a longer run.
After training the model will be pushed to hub and you can use it as any other model with LeRobot.
> **Note:** the model repo is created up front (it holds the staged training config the job runs from). If a run fails before the model is pushed, that repo is left on the Hub so you can inspect it — it is not deleted automatically, so repeated failures can leave empty repos behind. Remove one with `hf repo delete <repo-id>`.
**Prerequisites:** run `hf auth login` before submitting. For Weights & Biases integration, run `wandb login` or set `WANDB_API_KEY` on your machine — the key is forwarded to the job automatically.
**Resuming on a job.** Adding `--job.target` to a resume command runs the resume in the cloud — the same command works locally or remotely. The checkpoint repo is the source of truth, and new checkpoints continue the lineage in the same repo:
```bash
# resume a Hub run on a job (its checkpoints are already on the Hub)
lerobot-train --config_path=${HF_USER}/my_policy --resume=true --job.target=a10g-small
# resume a LOCAL run on a job — the checkpoint is uploaded to a private Hub repo first,
# then the job resumes from it (a local-only dataset is uploaded the same way)
lerobot-train \
--config_path=outputs/train/act_so101_test/checkpoints/last/pretrained_model/train_config.json \
--resume=true \
--job.target=a10g-small
```
Job settings come from the current command, so override `--job.target`, `--job.timeout`, etc. as needed; for the resumed run to itself be resumable later, keep `--save_checkpoint_to_hub=true`.
#### Upload policy checkpoints
@@ -612,6 +596,8 @@ hf upload ${HF_USER}/act_so101_test${CKPT} \
Use `lerobot-rollout` to deploy a trained policy on your robot. You can choose different strategies depending on your needs:
The examples below load the model from `--policy.path`. To pin a specific pushed version — useful once `--save_checkpoint_to_hub=true` has committed several checkpoints — add `--policy.pretrained_revision` with a commit hash, branch, or tag. Each pushed checkpoint is tagged with its step (e.g. `--policy.pretrained_revision=010000`), so you can recover a checkpoint by step without looking up its commit sha.
<hfoptions id="eval">
<hfoption id="Base mode (no recording)">
```bash
+397
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@@ -0,0 +1,397 @@
# Isaac Teleop
Control your robot with NVIDIA [Isaac Teleop](https://github.com/NVIDIA/IsaacTeleop), a
multi-modal teleoperation framework. Isaac Teleop drives a single `TeleopSession` from a range
of input devices — XR (VR) controllers, hand tracking, full-body tracking, Manus gloves, foot
pedals, and more.
In LeRobot, Isaac Teleop ships as a self-contained example under
[`examples/isaac_teleop_to_so101/`](https://github.com/huggingface/lerobot/tree/main/examples/isaac_teleop_to_so101).
Each Isaac Teleop input device is its own `Teleoperator` subclass in the example's
`isaac_teleop` package, sharing one session lifecycle (see `IsaacTeleopTeleoperator`). The
devices available today are the **XR controller** (`XRController`) and a back-drivable
**SO-101 leader arm** (`SO101LeaderArm`); Manus gloves and hand/full-body tracking are the
natural next devices. This guide focuses on the XR controller; the SO-101 leader is summarized
under [Run the example](#step-3-run-the-example).
**In this guide you'll learn:**
- How an Isaac Teleop device drives a robot endeffector (EE) target
- How the _clutch_ (squeeze/grip on the XR controller) engages teleoperation without jerking the arm
- How to run the SO101 teleoperation example and tune motion / gripper / IK
## Installation
The example lives in the LeRobot repository (it is not part of the `lerobot` pip package), so
clone the repo and install from source. The canonical, always-up-to-date install and usage
reference is the example's
[`README.md`](https://github.com/huggingface/lerobot/tree/main/examples/isaac_teleop_to_so101/README.md);
in short:
```bash
git clone https://github.com/huggingface/lerobot.git
cd lerobot
uv pip install -e ".[feetech,kinematics,dataset]" "huggingface_hub>=1.5"
uv pip install "isaacteleop[cloudxr,retargeters-lite]~=1.3.131" "scipy>=1.14"
```
`isaacteleop` is published on public PyPI (Linux only). The `cloudxr` extra brings the CloudXR
runtime bindings; `retargeters-lite` is the scipy-based retargeter path that resolves on both
x86_64 and ARM (on aarch64 — e.g. a DGX Spark — the full `retargeters` extra does not resolve
because of its `dex-retargeting`/`nlopt` pins, which is why it is not the default here). On
x86_64 you can additionally install the full retargeter stack:
```bash
uv pip install "isaacteleop[retargeters]~=1.3.131"
```
### Set up CloudXR and connect a headset
Isaac Teleop streams the headset to your machine over **NVIDIA CloudXR**, which provides the
OpenXR runtime the session connects to. By default LeTeleop **auto-launches the CloudXR runtime
for you** when you call `teleop_device.connect()` — you no longer have to run `python -m
isaacteleop.cloudxr` and `source cloudxr.env` in a separate shell. All you need is a supported
headset connected and the CloudXR firewall ports open. Follow the Isaac Teleop
[Quick Start](https://nvidia.github.io/IsaacTeleop/main/getting_started/quick_start.html) for the
headset-pairing and firewall details.
**First run (EULA).** The very first launch must accept the NVIDIA CloudXR EULA. The auto-launch
prompts for it **on stdin**, so on a headless machine it will hang waiting for input. Bootstrap
the EULA once, interactively, with:
```bash
python -m isaacteleop.cloudxr --accept-eula # one-time: accept the CloudXR EULA
```
After that, `connect()` launches the runtime non-interactively. The launch **blocks for ~30s**
while the runtime comes up.
**Configuration.** Two fields on `IsaacTeleopConfig` (shared by every device) control this:
- `auto_launch_cloudxr` (default `True`) — whether `connect()` starts the runtime. Set `False`
when CloudXR is already running externally.
- `cloudxr_env_file` (default `None`) — an optional CloudXR device-profile `.env` selecting the
headset transport (e.g. an Apple Vision Pro profile). This is launcher **input**; it is not the
`~/.cloudxr/run/cloudxr.env` **output** file the old manual flow told you to `source`. `None`
keeps the default auto-WebRTC profile — though the SO-101 example overrides it to the
`default.env` shipped next to `teleoperate.py` unless you pass `--teleop.cloudxr_env_file`.
**Opting out.** To skip the auto-launch (CloudXR already running), either set
`auto_launch_cloudxr=False` or export:
```bash
export LEROBOT_CLOUDXR_SKIP_AUTOLAUNCH=1
```
The **env var takes precedence over the config field**: if `LEROBOT_CLOUDXR_SKIP_AUTOLAUNCH=1` is
set, the auto-launch is skipped even when `auto_launch_cloudxr=True`. This variable is
**independent** of Isaac Lab's `ISAACLAB_CXR_SKIP_AUTOLAUNCH` — setting one does not affect the
other.
**One teleoperator per process.** The CloudXR runtime configures the environment process-wide (a
singleton), so run a single Isaac Teleop teleoperator per process.
**Shutting down.** Always call `teleop_device.disconnect()` on exit — including on Ctrl-C. Wrap
your teleoperation loop in `try/finally` and call `disconnect()` in the `finally`. This tears down
the OpenXR session **before** the CloudXR runtime, which is the required order; the launcher's
`atexit` hook only reaps the runtime and does not run the session's `__exit__`, so without an
explicit `disconnect()` an interrupted run shuts down in the wrong order.
```python
teleop_device.connect()
try:
while True:
action = teleop_device.get_action()
# ... drive the robot ...
finally:
teleop_device.disconnect()
```
See [System Requirements](https://nvidia.github.io/IsaacTeleop/main/references/requirements.html)
for supported OS / GPU / CloudXR versions and headsets.
## How it works
The XR controller is one Isaac Teleop **input** device. `XRController` is a deliberately thin
reader: it exposes the **raw** controller grip pose — already statically rebased into the robot
base frame — plus the squeeze and trigger analog values. It has **no** retargeters and **no**
clutch logic of its own. The clutch (engage latch + delta rebasing onto the EE) and the gripper
mapping live downstream in the example loop, which then feeds LeRobot's existing closedloop
Cartesian IK pipeline — the same one the phone teleoperator uses. The devicespecific pieces are
`XRController`, the loop's `Clutch`, and `MapXRControllerActionToRobotAction`; everything downstream
(`EEBoundsAndSafety`, `InverseKinematicsEEToJoints`) is shared, and a future device (e.g. Manus
gloves) would swap in its own `teleop_<device>.py` + processor while reusing the rest.
`XRController._build_pipeline` wires Isaac Teleop's `ControllersSource` — statically rebased into
the robot base frame by the native `ControllerTransform` (`base_T_anchor`) — and exposes the
transformed controller stream verbatim. `get_action()` reads the grip pose, squeeze, and trigger
straight off it; the session is always stepped `RUNNING` (there is no clutch retargeter to gate).
The `Clutch` class (in `examples/isaac_teleop_to_so101/isaac_teleop/clutch.py`, driven by the
loop in `common.py`) mirrors Isaac Teleop's `SO101ClutchRetargeter`, but lives in-loop so the
device can stay a thin reader:
- It latches its engage origin on the squeeze **engage edge** (the frame the squeeze first crosses
`clutch_threshold`) and rebases both position and orientation around it, so engaging does not
teleport the arm. `Clutch.rebase` returns the absolute base-frame target as a `(pos, quat)`
pair, which the loop concatenates into the 7D `ee_pose` fed to the processor.
- The analog trigger becomes a gripper `closedness` in `[0, 1]` (0 = open, 1 = closed),
proportional to the trigger pull, which `MapXRControllerActionToRobotAction` maps to a jaw target.
See the Isaac Teleop
[Retargeting interface](https://nvidia.github.io/IsaacTeleop/main/references/retargeting/index.html)
and [architecture overview](https://nvidia.github.io/IsaacTeleop/main/overview/architecture.html)
for how source nodes and retargeters compose.
```text
VR controller (OpenXR)
XRController.get_action() ── raw base-frame grip_pos / grip_quat + squeeze + trigger
│ (TeleopSession always stepped RUNNING; clutch lives downstream)
Clutch.rebase(grip_pos, grip_quat) ── engage-relative delta applied to the EE home (pos + orient)
│ ee_pose (7) / closedness → absolute ee_pose; closedness = trigger
MapXRControllerActionToRobotAction ── absolute ee.x/y/z; ee.w* = orientation rotvec target;
│ ee.x/y/z / ee.w* / ee.gripper_pos ee.gripper_pos = (1 - closedness) * 100
EEBoundsAndSafety ── workspace clip + per-frame step clamp (clamp+warn)
InverseKinematicsEEToJoints ── closed-loop Placo IK; position + soft-orientation
│ (orientation_weight=0.01) (passes ee.gripper_pos → gripper.pos)
SO-101 follower joint targets
```
### The clutch: owned by the example loop
Unlike the phone pipeline (which splits the clutch across `MapPhoneActionToRobotAction` and
`EEReferenceAndDelta`), the XR clutch lives entirely in the example loop's `Clutch` class. It emits
an **absolute** EE pose, so there is no `EEReferenceAndDelta` stage and no delta accumulation in the
processor — `MapXRControllerActionToRobotAction` is a pure, stateless perframe mapping.
The clutch latches its engage origin on the squeeze **engage edge** (the moment the squeeze crosses
`clutch_threshold`) and drives the EE from the motion _relative_ to that origin, so the arm does not
teleport on engage. On **every** engage — startup and midtask reclutch alike — the home
_position_ is latched from forward kinematics on the arm's **measured joints**, so the home equals
where the arm physically is even if it moved while disengaged, and the engage is jumpfree. The
home _orientation_ keeps the last commanded rotation: the 5DOF arm tracks orientation only
softly, so latching the measured wrist orientation would inject its tracking offset into the
command on every reclutch.
## Controls
- **Squeeze / grip** — the **clutch** (deadman). Hold it past `clutch_threshold` to engage
teleoperation; release to pause. Each engage recaptures the origin, so you can reposition
your hand while paused and reengage without the arm jumping (index/clutch style).
- **Trigger** — the **gripper**, controlled **analog**. The jaw tracks the trigger
proportionally — a halfpressed trigger leaves the jaw halfclosed — via a closedness in
`[0, 1]` (0 = open, 1 = closed) that maps to an absolute gripper joint target.
- **Controller orientation** — the **wrist**. The clutch rebases the controller orientation
(engagerelative, baseframe) into a soft IK orientation target the wrist tracks alongside
position. On the 5DOF SO101 the wrist follows the hand only partially by design — see
`orientation_weight` below.
## Get started
### Step 1: Create the teleoperator
```python
# Run from the repo root so the `examples` package is importable.
from examples.isaac_teleop_to_so101.isaac_teleop import XRController, XRControllerConfig
teleop_config = XRControllerConfig(
hand_side="right", # "left" or "right" controller
clutch_threshold=0.5, # squeeze value above which the clutch engages
)
teleop_device = XRController(teleop_config)
```
`XRController.get_action()` returns the **raw** baseframe controller pose, not a clutchrebased
target: `grip_pos` (3,) `[x, y, z]` [m] and `grip_quat` (4,) `[qx, qy, qz, qw]` in the robot base
frame, plus scalar `squeeze` and `trigger` analog values in `[0, 1]`. The example loop's `Clutch`
turns these into the absolute `ee_pose`, and the squeeze is thresholded by the loop against
`clutch_threshold` to engage.
### Step 2: Connect
Calling `teleop_device.connect()` first auto-launches the CloudXR runtime (unless you opted out —
see [Set up CloudXR and connect a headset](#set-up-cloudxr-and-connect-a-headset); this blocks for
~30s and on the first run prompts for the EULA on stdin), then starts the Isaac Teleop
[`TeleopSession`](https://nvidia.github.io/IsaacTeleop/main/getting_started/teleop_session.html)
(opens the OpenXR session and discovers the controllers). XR controllers are selfcalibrating, so
there is no manual calibration step — the clutch handles recentering each time you engage. Pair
`connect()` with a `try/finally` that calls `disconnect()` so the session tears down before the
runtime on exit/Ctrl-C.
### Step 3: Run the example
The example assumes you configured your robot (SO101 follower) and set the correct serial port.
The **robot URDF and its meshes are fetched automatically** on first run: the XR device downloads
the SO-101 URDF from the
[`lerobot/robot-urdfs` Hugging Face bucket](https://huggingface.co/buckets/lerobot/robot-urdfs/tree/so101)
into the LeRobot cache (`HF_LEROBOT_HOME/robot-urdfs/so101/`) and reuses it after, so there is no
separate download step :
```bash
python -m examples.isaac_teleop_to_so101.teleoperate --robot.type=so101_follower --robot.port=/dev/ttyACM0 \
--robot.id=so101_follower_arm --teleop.type=xr_controller
```
The CLI is `lerobot-teleoperate`-style (draccus): `--robot.*` configures the SO-101 follower and
`--teleop.type` selects the Isaac input device (`xr_controller` | `so101_leader`), with
`--teleop.*` its device knobs. `--teleop.type=xr_controller` runs the XR-controller path described
above. The startup safety contract: by default it slews all joints to a default reset pose over
`--reset_duration` seconds (`--reset_to_origin=false` keeps the arm where it is), then seeds the
clutch home from the arm's measured pose so the first engage is jump-free; the follower is
commanded only while the clutch is engaged.
**Customizing the reset pose.** The reset pose ships as a built-in default (a comfortable mid-range
pose) and works out of the box — you do **not** need to record anything. To tailor it to your setup,
back-drive the arm to the pose you want and run
`python -m examples.isaac_teleop_to_so101.override_reset_pose --id <robot.id>`; it writes the
current joints to a per-arm file in the LeRobot cache
(`HF_LEROBOT_HOME/reset_poses/<robot.name>/<robot.id>.json`, keyed like calibration), which then takes
priority over the built-in default on the next run. Because it lives in the user-local cache (not
the repo), your override stays on your machine, and both `teleoperate` and `record` honor it
when launched with the same `--robot.id`.
The other device, `--teleop.type=so101_leader`, mirrors the follower 1:1 from a back-drivable
SO-101 _leader arm_ whose joints are streamed by Isaac Teleop's native `so101_leader` plugin (no
clutch, no IK — the leader and follower share the SO-101 kinematics).
The `so101_leader_plugin` binary is a C++ plugin that is **not** part of the `isaacteleop` pip
package — you build it from the Isaac Teleop source tree. Follow
[Build Isaac Teleop from source](https://nvidia.github.io/IsaacTeleop/main/getting_started/build_from_source/index.html)
(in short, from your Isaac Teleop checkout: `cmake -B build && cmake --build build --parallel &&
cmake --install build`); the build installs the plugins under `<IsaacTeleop>/install/plugins/`, so
the binary lands at `install/plugins/so101_leader/so101_leader_plugin` — the `--launch_plugin` path
below. See the plugin's own `README.md` (next to the binary) for its serial/calibration details.
Point `--teleop.port` at the physical leader's serial port and `--launch_plugin` at that plugin
binary to have the script spawn it after CloudXR is up:
```bash
python -m examples.isaac_teleop_to_so101.teleoperate --robot.type=so101_follower --robot.port=/dev/ttyACM0 \
--robot.id=so101_follower_arm --teleop.type=so101_leader \
--teleop.port=/dev/ttyACM1 --teleop.id=so101_leader_arm \
--launch_plugin=/code/Teleop/install/plugins/so101_leader/so101_leader_plugin
```
(Note `so101_leader` here is the _Isaac_ leader, resolved against the Isaac Teleop device
registry, distinct from `lerobot-teleoperate`'s serial `so101_leader`.) When a `--teleop.port` is
set, the plugin's tick→radian calibration is inferred from `--teleop.id` and passed to the plugin
as its third positional arg — the LeRobot-format JSON at
`HF_LEROBOT_CALIBRATION/teleoperators/so_leader/<id>.json`, the same file the serial SO-101 leader
uses (`lerobot-calibrate --teleop.type=so101_leader --teleop.id=<id>`). If it is missing the script
warns and the plugin uses built-in defaults. Run `python -m examples.isaac_teleop_to_so101.teleoperate --help` for all flags. Its
startup safety contract: by default the follower is
slewed to the leader's first reading over `--align_duration` seconds (`--align=false` to skip) so
the arm does not snap when the mirror begins, and while the leader stream is stale the follower is
held at its measured pose.
The URDF fetch uses `huggingface_hub` (already a LeRobot dependency) against the public
`lerobot/robot-urdfs` bucket, so it needs no login. It is cached under
`HF_LEROBOT_HOME/robot-urdfs/so101/`; delete that folder to force a redownload.
Then, in your headset: squeeze and hold the grip to engage, move the controller to drive the
arm, twist/tilt it to orient the wrist, and press the trigger to close the gripper
(proportionally — release to open).
To record a dataset (not just teleoperate), use `record.py` in the same folder. It dispatches on
`--teleop.type` (`xr_controller` | `so101_leader`) exactly like `teleoperate.py`, so either device
can drive the follower, and it saves the commanded joints to a LeRobot dataset (`lerobot-record`-style
`--dataset.*` flags). See its module docstring for the full CLI and the keyboard recording shortcuts.
## Important pipeline steps and options
The clutch already produces an absolute baseframe pose, so the processor side is a thin
**absolutepose** path — there is no frame remap, no delta accumulation, and no
`EEReferenceAndDelta` stage.
- `MapXRControllerActionToRobotAction` is a stateless perframe mapping from the device output to
the IK input contract. It writes the absolute baseframe position, encodes the absolute
orientation as a rotvec target, and inverts the closedness into a motor gripper target:
```python
action["ee.x"], action["ee.y"], action["ee.z"] = ee_pose[:3] # absolute, base frame [m]
action["ee.wx"], action["ee.wy"], action["ee.wz"] = orient_rotvec # orientation target (rotvec)
action["ee.gripper_pos"] = (1 - closedness) * 100 # motor units; SO-101 calibrates 100 = open
```
The gripper polarity (`100 = open, 0 = closed`) is a hardwarecalibration convention in the source — flip it there if the jaw opens when it should close.
- `EEBoundsAndSafety` clamps the EE to a workspace and ratelimits perframe jumps. The clutch's
noteleport keeps frames small, so `max_ee_step_m` mostly catches transient controller tracking
glitches. The z floor is `0.0` (the table plane) so a stray target cannot drive the EE below the
table; x/y stay at the loose `[-1, 1]` m box. Set `raise_on_jump=False` so an overlimit frame is
**clamped and warned** instead of raising — a crash midloop would leave the arm uncontrolled:
```python
EEBoundsAndSafety(
end_effector_bounds={"min": [-1.0, -1.0, 0.0], "max": [1.0, 1.0, 1.0]},
max_ee_step_m=0.10,
raise_on_jump=False,
)
```
- `InverseKinematicsEEToJoints(initial_guess_current_joints=False, orientation_weight=0.01)` solves
closedloop Placo IK. SO101 is a 5DOF arm, so the IK is positiondominant; the small
`orientation_weight` lets it softly track the orientation target carried in `ee.w*` so the wrist
follows the hand, while the underdetermined roll stays partial by design. There is **no**
`GripperVelocityToJoint`: the absolute `ee.gripper_pos` is passed straight to `gripper.pos`.
`initial_guess_current_joints=False` warmstarts each solve from the **previous IK solution**
rather than reseeding from the measured joints, so the joint trajectory stays continuous
frametoframe. Tune `orientation_weight` on hardware — too high fights position tracking, too
low ignores the orientation command.
The example also gates safety at the loop level: after the startup reset slew (on by default —
pass `--reset_to_origin=false` to keep the arm where it is), it commands the robot **only while
the clutch is engaged**, and resends the measured joints while disengaged, so releasing the
clutch freezes the arm in place.
See the [Processors for Robots and Teleoperators](./processors_robots_teleop) guide for more on
adapting the pipeline to other robots.
## Troubleshooting
- **`ModuleNotFoundError: isaacteleop`** — the `isaacteleop` package is not installed in the
active environment. Re-run the install command at the top of this guide:
`uv pip install "isaacteleop[cloudxr,retargeters-lite]~=1.3.131"`.
- **No controllers found** — make sure the CloudXR runtime is running, the firewall ports are
whitelisted, and the headset is connected (see
[Set up CloudXR and connect a headset](#set-up-cloudxr-and-connect-a-headset) and the Isaac
Teleop [Quick Start](https://nvidia.github.io/IsaacTeleop/main/getting_started/quick_start.html)).
- **CloudXR auto-launch failed** — `connect()` raises a `RuntimeError` if the runtime does not
come up within its startup timeout. Check the launcher logs under `~/.cloudxr/logs`. Common
causes: the EULA was never accepted (run `python -m isaacteleop.cloudxr --accept-eula` once,
interactively — the auto-launch prompts on stdin and hangs headless), or the runtime is already
running externally (set `LEROBOT_CLOUDXR_SKIP_AUTOLAUNCH=1` or `auto_launch_cloudxr=False` to
skip the auto-launch).
- **Arm does not move** — the clutch is a deadman: you must hold the squeeze/grip past
`clutch_threshold`. Lower the threshold if your controller's squeeze is reported softly.
- **Motion feels misaligned** — confirm the headset/play space orientation. The controller stream
is rebased into the robot base frame by the `base_T_anchor` transform on `XRControllerConfig`
(default: standard OpenXR → robot axis convention); adjust it if your anchor frame differs.
## Learn more
NVIDIA Isaac Teleop documentation ([docs home](https://nvidia.github.io/IsaacTeleop/),
[GitHub](https://github.com/NVIDIA/IsaacTeleop)):
- [Quick Start](https://nvidia.github.io/IsaacTeleop/main/getting_started/quick_start.html) —
install, run the CloudXR server, connect a headset, run a teleop example.
- [TeleopSession](https://nvidia.github.io/IsaacTeleop/main/getting_started/teleop_session.html) —
the session API `XRController` wraps.
- [Retargeting interface](https://nvidia.github.io/IsaacTeleop/main/references/retargeting/index.html)
and [architecture overview](https://nvidia.github.io/IsaacTeleop/main/overview/architecture.html) —
how source nodes and retargeters compose into a pipeline.
- [Build from source](https://nvidia.github.io/IsaacTeleop/main/getting_started/build_from_source/index.html) —
build `isaacteleop` (and its C++ plugins, including the `so101_leader` plugin used above) from a
local checkout.
- [System Requirements](https://nvidia.github.io/IsaacTeleop/main/references/requirements.html) and
the [CloudXR SDK docs](https://docs.nvidia.com/cloudxr-sdk) — supported platforms, GPUs,
CloudXR/OpenXR runtime versions, and headsets.
+1 -1
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@@ -319,7 +319,7 @@ If you want to dive deeper into this important topic, you can check out the [blo
#### Troubleshooting:
- On Linux, if the left and right arrow keys and escape key don't have any effect during data recording, make sure you've set the `$DISPLAY` environment variable. See [pynput limitations](https://pynput.readthedocs.io/en/latest/limitations.html#linux).
- On Linux, the recording control-flow keys (arrow keys, Escape) work on X11, Wayland, and headless/SSH sessions as long as you run the recording from an interactive terminal (keep it focused) — no `$DISPLAY` setup is needed; the letter equivalents `n` / `r` / `q` also work. Note that **keyboard teleoperation of the LeKiwi base** is different: it relies on a global key backend and therefore works only on an X11 session, a Windows desktop, or macOS with Accessibility/Input Monitoring granted — not on Wayland or headless machines. See [pynput limitations](https://pynput.readthedocs.io/en/latest/limitations.html#linux).
## Replay an episode
+1 -1
View File
@@ -44,7 +44,7 @@ lerobot-record \
--dataset.num_episodes=5 \
--dataset.single_task="Grab the black cube" \
--dataset.streaming_encoding=true \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--dataset.encoder_threads=2
```
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@@ -143,7 +143,7 @@ lerobot-train \
--batch_size=4 \
--eval.batch_size=1 \
--eval.n_episodes=1 \
--eval_freq=1000
--env_eval_freq=1000
```
## Reproducing published results
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@@ -173,7 +173,7 @@ lerobot-train \
--batch_size=4 \
--eval.batch_size=1 \
--eval.n_episodes=1 \
--eval_freq=1000
--env_eval_freq=1000
```
## Relationship to LIBERO
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@@ -0,0 +1,187 @@
# LingBot-VA
LingBot-VA is an **autoregressive video-action world-model policy** built on the **Wan2.2**
video-diffusion stack. It interleaves, in one autoregressive sequence, the prediction of
future **video latents** and **robot actions** ("VA" = Video-Action). The LeRobot
integration wires LingBot-VA into the standard training, evaluation and processor
interfaces.
## Model Overview
LingBot-VA is a **dual-stream "mixture-of-transformers"**: a video/latent stream
(`patch_embedding_mlp → blocks → proj_out`) and an action stream
(`action_embedder → blocks → action_proj_out`) share the same 30 transformer blocks and
text conditioning.
| Component | Class | Role |
| ------------------------ | ----------------------- | ----------------------------------------------------------- |
| DiT backbone (trainable) | `WanTransformer3DModel` | ~5B-param dual-stream transformer. |
| VAE (frozen) | `AutoencoderKLWan` | Wan2.2 VAE, `z_dim=48`. Lazy-pulled from the source repo. |
| Text encoder (frozen) | `UMT5EncoderModel` | UMT5-XXL, `d_model=4096`. Lazy-pulled from the source repo. |
At inference the policy runs an autoregressive loop per chunk: it denoises the video-latent
stream (CFG, ~20 steps) and the action stream (~50 steps) with two independent
flow-matching schedulers, maintaining a KV cache across chunks. Real observed keyframes are
fed back into the KV cache as the chunk is executed (closed-loop world modeling).
### What the LeRobot Integration Covers
- Standard `policy.type=lingbot_va` configuration through LeRobot.
- Ready-to-use LeRobot-format checkpoints on the Hub (converted from the released upstream ones).
- Autoregressive dual-stream inference behind the standard `select_action` interface
(single-environment eval, `--eval.batch_size=1`).
- Opt-in saving of the policy's **predicted (imagined) videos** during eval / training.
- Evaluation with `lerobot-eval` on LIBERO and RoboTwin.
- Training / fine-tuning via the dual-stream flow-matching loss (`policy.forward`), see below.
## Installation
1. Install LeRobot by following the [Installation Guide](./installation).
2. Install the LingBot-VA extra:
```bash
pip install -e ".[lingbot_va]"
```
## Checkpoints
The released upstream checkpoints have been converted to LeRobot format and pushed to the Hub:
| Variant | LeRobot checkpoint |
| ---------------------- | -------------------------------- |
| LIBERO-Long post-train | `lerobot/lingbot_va_libero_long` |
| RoboTwin post-train | `lerobot/lingbot_va_robotwin` |
| Pretrained base | `lerobot/lingbot_va_base` |
Only the trainable ~5B transformer is stored in the LeRobot
`model.safetensors`. The frozen VAE + UMT5 + tokenizer (~20 GB) are pulled from
`config.wan_pretrained_path` at load time (defaults to the source `robbyant/*` repo). The
UMT5-XXL text encoder runs on CPU by default (`config.text_encoder_device`) so the 5B
transformer + VAE fit on a single 2432 GB GPU.
## Evaluation (LIBERO)
```bash
lerobot-eval \
--policy.path=lerobot/lingbot_va_libero_long \
--policy.device=cuda \
--env.type=libero --env.task=libero_10 \
--env.observation_height=128 --env.observation_width=128 \
--eval.n_episodes=50 --eval.batch_size=1 \
--output_dir=outputs/eval/lingbot_va_libero
```
LingBot-VA's streaming inference (KV cache + observed-keyframe feedback) is implemented for
single-environment eval; use `--eval.batch_size=1`.
## Evaluation (RoboTwin)
RoboTwin 2.0 needs the SAPIEN + CuRobo simulator stack. You can use the benchmark Docker image
(`docker/Dockerfile.benchmark.robotwin`, which also needs `warp-lang==1.3.1` and CuRobo built
with the GPU's compute capability in `TORCH_CUDA_ARCH_LIST`). RoboTwin uses **end-effector-pose
control**, so run with `--env.action_mode=ee`: the policy predicts per-arm `xyz+quaternion+gripper`
deltas (`robotwin_tshape` latent layout) that are composed onto the episode's initial eef pose and
executed via CuRobo IK.
```bash
lerobot-eval \
--policy.path=lerobot/lingbot_va_robotwin \
--policy.device=cuda \
--env.type=robotwin --env.task=beat_block_hammer --env.action_mode=ee \
--eval.n_episodes=10 --eval.batch_size=1 \
--output_dir=outputs/eval/lingbot_va_robotwin
```
### Saving predicted (imagined) videos
Set `--policy.save_predicted_video=true` to additionally VAE-decode the predicted video
latents and write `pred_episode_*.mp4` next to the env-rendered `eval_episode_*.mp4` videos.
The same flag works for the periodic eval during `lerobot-train`.
## Training / fine-tuning
`LingBotVAPolicy.forward(batch)` implements the dual-stream **flow-matching** loss
(`latent_loss + action_loss`, timestep-weighted, action-masked) from the paper: it VAE-encodes
the camera clips into video latents, UMT5-encodes the task, noises both streams, runs the
transformer's block-causal training pass and returns `(loss, metrics)`. Optimizer preset is AdamW
with a linear-warmup-then-constant schedule (matching upstream).
Requirements:
- The block-causal masks use PyTorch **flex-attention**, so build the policy with
`--policy.attn_mode=flex` for training (the default `torch` SDPA is inference-only).
- The full 5B DiT does not fit a single 2432 GB GPU under AdamW; fine-tune with **LoRA**
(`--policy.use_peft=true`) and/or optimizer offload. `get_optim_params` returns only the
trainable (e.g. adapter) parameters; the VAE + UMT5 text encoder stay frozen.
```bash
lerobot-train \
--policy.path=lerobot/lingbot_va_libero_long --policy.attn_mode=flex \
--policy.use_peft=true \
--dataset.repo_id=<your LeRobot-format dataset> \
--batch_size=1 --steps=... --output_dir=outputs/train/lingbot_va
```
The dataset must provide camera clips (a temporal window per camera, VAE-encoded to
`frame_chunk_size` latent frames) and `frame_chunk_size * action_per_frame` action steps per item.
## Data format (action channels & camera order)
LingBot-VA is an **end-effector (Cartesian) pose** policy, it predicts EEF poses + gripper, not
joint positions. Actions live in a fixed multi-embodiment **30-dim** layout; map your robot's
action dimensions into these channels and pad the rest with `0` (`used_action_channel_ids` selects
the channels a given checkpoint actually uses):
| channels | meaning |
| -------- | ----------------------------------------------------- |
| 06 | Left-arm end-effector pose |
| 713 | Right-arm end-effector pose |
| 1420 | Left-arm joints (unused by the released checkpoints) |
| 2127 | Right-arm joints (unused by the released checkpoints) |
| 28 | Left gripper |
| 29 | Right gripper |
- **LIBERO** uses channels `06`: a 6-DoF EEF delta (xyz + rotation) + gripper (single arm).
- **RoboTwin** uses channels `[06, 28, 713, 29]`: left EEF (xyz + quaternion) + left gripper +
right EEF + right gripper (16 dims). The env converts these poses to joint trajectories via
CuRobo IK — joints are never predicted.
Joint-space datasets (or a different EEF convention) must be remapped into this schema before
fine-tuning these checkpoints.
**Camera order is fixed and order-sensitive**, per-camera latents are concatenated spatially in
`obs_cam_keys` order, so the physical camera→slot mapping must match training:
| benchmark | `obs_cam_keys` (in order) | `camera_layout` |
| --------- | ----------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- |
| LIBERO | `observation.images.image` (agentview / 3rd-person), `observation.images.image2` (eye-in-hand wrist) | `width_concat` (latents concatenated on width) |
| RoboTwin | `observation.images.head_camera`, `observation.images.left_camera`, `observation.images.right_camera` | `robotwin_tshape` (full-res head below, two half-res wrists on top) |
The first camera is the exterior/head view and the rest are wrist views.
## Inference Hyperparameters (LIBERO)
| Key | Value |
| -------------------------------------- | --------------------------------------------------------------------------------- |
| height × width | 128 × 128 |
| cameras | `observation.images.image` (agentview), `observation.images.image2` (eye-in-hand) |
| action channels used | 06 (7-DoF arm + gripper) |
| action_per_frame / frame_chunk_size | 4 / 4 |
| attn_window | 30 |
| video / action denoising steps | 20 / 50 |
| guidance_scale / action_guidance_scale | 5 / 1 |
| snr_shift / action_snr_shift | 5.0 / 0.05 |
These are the defaults of `LingBotVAConfig`; override any of them via `--policy.<name>=...`.
## Notes
- **Attention backend:** inference uses the `torch` SDPA backend (always available). The
`flashattn` and `flex` backends are optional; `flex` is only needed for training.
- **Model size:** the DiT is ~5B params and the frozen VAE+UMT5 add ~20 GB; inference needs
roughly 1824 GB of VRAM.
## License
LingBot-VA is released under Apache-2.0. See the
[upstream repository](https://github.com/Robbyant/lingbot-va).
+2 -2
View File
@@ -120,11 +120,11 @@ lerobot-train \
--batch_size=4 \
--eval.batch_size=1 \
--eval.n_episodes=1 \
--eval_freq=1000
--env_eval_freq=1000
```
## Practical tips
- Use the one-hot task conditioning for multi-task training (MT10/MT50 conventions) so policies have explicit task context.
- Inspect the dataset task descriptions and the `info["is_success"]` keys when writing post-processing or logging so your success metrics line up with the benchmark.
- Adjust `batch_size`, `steps`, and `eval_freq` to match your compute budget.
- Adjust `batch_size`, `steps`, and `env_eval_freq` to match your compute budget.
+67 -5
View File
@@ -17,7 +17,7 @@ the paper, see [allenai/molmoact2](https://github.com/allenai/molmoact2).
Install LeRobot with the MolmoAct2 optional dependencies:
```bash
pip install -e ".[molmoact2]"
uv sync --locked --extra molmoact2
```
To run the models in this repository, you need an NVIDIA GPU. The measurements
@@ -46,8 +46,8 @@ The repo has been tested with Ubuntu 22.04.
To use MolmoAct2 in a LeRobot training config, set:
```python
policy.type=molmoact2
```bash
--policy.type=molmoact2
```
## Training
@@ -103,7 +103,7 @@ accelerate launch \
--batch_size=32 \
--num_workers=4 \
--log_freq=20 \
--eval_freq=-1 \
--env_eval_freq=-1 \
--save_checkpoint=true \
--save_freq=2000
```
@@ -142,7 +142,7 @@ accelerate launch \
--batch_size=32 \
--num_workers=4 \
--log_freq=20 \
--eval_freq=-1 \
--env_eval_freq=-1 \
--save_checkpoint=true \
--save_freq=2000
```
@@ -386,6 +386,68 @@ These results demonstrate MolmoAct2's strong performance across diverse robotic
manipulation tasks. To reproduce them, follow the instructions in the LIBERO
evaluation section.
## Hardware Deployment (lerobot-rollout)
LeRobot-format checkpoints are available on the Hub for direct use with
`lerobot-rollout`. Each checkpoint uses specific camera names that must
match your robot's camera configuration.
### Camera naming convention
Each checkpoint expects specific `observation.images.*` keys.
If your robot cameras have different names, use `--rename_map` to map them:
| Checkpoint | Camera keys | Description |
| ----------------------------- | ---------------------- | ------------------------ |
| MolmoAct2-LIBERO-LeRobot | `image`, `wrist_image` | LIBERO sim cameras |
| MolmoAct2-BimanualYAM-LeRobot | `top`, `left`, `right` | YAM 3-camera setup |
| MolmoAct2-DROID-LeRobot | `cam0`, `cam1` | External + wrist |
| MolmoAct2-SO100_101-LeRobot | `cam0`, `cam1` | Primary + secondary view |
Example with an SO-100 robot using top and side cameras:
```bash
lerobot-rollout \
--policy.path=lerobot/MolmoAct2-SO100_101-LeRobot \
--rename_map='{"observation.images.top": "observation.images.cam0", "observation.images.side": "observation.images.cam1"}' \
--robot.type=so100_follower \
--robot.port=/dev/ttyACM0 \
--robot.cameras='{
top: {type: opencv, index_or_path: 0, width: 640, height: 480, fps: 30},
side: {type: opencv, index_or_path: 2, width: 640, height: 480, fps: 30}
}' \
--task="pick up the red cube" --duration=30
```
To use a wrist camera instead, just change the rename mapping:
```bash
--rename_map='{"observation.images.top": "observation.images.cam0", "observation.images.wrist": "observation.images.cam1"}'
```
### Joint frame transform (SO-100/101 zero-shot)
<Tip warning={true}>
The MolmoAct2-SO100_101 checkpoint was trained on data that uses a different
joint calibration convention than LeRobot >= 0.5.0. Without a frame
correction, the arm may move in the wrong direction.
This affects both **zero-shot deployment** and **fine-tuning** from the
original checkpoint. The pretrained weights expect the old convention, so
all joint data (observations and actions) must be transformed to match.
The converted LeRobot checkpoint (`lerobot/MolmoAct2-SO100_101-LeRobot`)
already includes this correction in its processor pipeline. If you convert
or fine-tune the checkpoint yourself, set the following in the policy config (`configuration_molmoact2.py`):
- `joint_signs`: `[1, -1, 1, 1, 1, 1]` (flips shoulder_lift direction)
- `joint_offsets`: `[0, 90, 90, 0, 0, 0]` (shifts shoulder_lift and elbow_flex by 90°)
See the [backward compatibility guide](./backwardcomp) for details on the
calibration change.
</Tip>
## Differences From the Original Implementation
This LeRobot port is intended to match MolmoAct2 behavior while using LeRobot's
+2 -2
View File
@@ -95,7 +95,7 @@ If you want to scale your hyperparameters when using multiple GPUs, you should d
accelerate launch --num_processes=2 $(which lerobot-train) \
--optimizer.lr=2e-4 \
--dataset.repo_id=lerobot/pusht \
--policy=act
--policy.type=act
```
**Training Steps Scaling:**
@@ -110,7 +110,7 @@ accelerate launch --num_processes=2 $(which lerobot-train) \
--batch_size=8 \
--steps=50000 \
--dataset.repo_id=lerobot/pusht \
--policy=act
--policy.type=act
```
## Training Large Models with FSDP
+1 -1
View File
@@ -314,7 +314,7 @@ lerobot-train \
--steps=30000 \
--save_freq=1000 \
--log_freq=100 \
--eval_freq=1000 \
--env_eval_freq=1000 \
--policy.type=multi_task_dit \
--policy.device=cuda \
--policy.horizon=32 \
+2 -2
View File
@@ -96,7 +96,7 @@ lerobot-train \
--policy.type=pi0_fast \
--output_dir=./outputs/pi0fast_training \
--job_name=pi0fast_training \
--policy.pretrained_path=lerobot/pi0_fast_base \
--policy.pretrained_path=lerobot/pi0fast-base \
--policy.dtype=bfloat16 \
--policy.gradient_checkpointing=true \
--policy.chunk_size=10 \
@@ -187,7 +187,7 @@ lerobot-train \
--dataset.repo_id=lerobot/libero \
--output_dir=outputs/libero_pi0fast \
--job_name=libero_pi0fast \
--policy.path=lerobot/pi0fast_base \
--policy.path=lerobot/pi0fast-base \
--policy.dtype=bfloat16 \
--steps=100000 \
--save_freq=20000 \
+18
View File
@@ -0,0 +1,18 @@
# EVO1
EVO1 is a Vision-Language-Action policy for robot control. The LeRobot
integration uses an InternVL3 vision-language backbone with a flow-matching
action head, and supports staged training through the standard LeRobot policy
APIs.
The upstream EVO1 project is available at
[MINT-SJTU/Evo-1](https://github.com/MINT-SJTU/Evo-1).
```bibtex
@misc{evo1,
title = {EVO1},
author = {{MINT-SJTU}},
year = {2025},
howpublished = {\url{https://github.com/MINT-SJTU/Evo-1}},
}
```
+56
View File
@@ -0,0 +1,56 @@
## Research Paper
Paper: https://arxiv.org/abs/2603.16666
## Repository
Code: https://github.com/yuantianyuan01/FastWAM
Project page: https://yuantianyuan01.github.io/FastWAM/
## Citation
```bibtex
@article{yuan2026fastwam,
title = {Fast-WAM: Do World Action Models Need Test-time Future Imagination?},
author = {Tianyuan Yuan and Zibin Dong and Yicheng Liu and Hang Zhao},
journal = {arXiv preprint arXiv:2603.16666},
year = {2026},
url = {https://arxiv.org/abs/2603.16666}
}
```
## Additional Resources
Base video model: https://huggingface.co/Wan-AI/Wan2.2-TI2V-5B
Released upstream checkpoints: https://huggingface.co/yuanty/fastwam
## Results
Evaluated on LIBERO with [`ZibinDong/fastwam_libero_uncond_2cam224`](https://huggingface.co/ZibinDong/fastwam_libero_uncond_2cam224):
| Suite | Success rate | n_episodes |
| -------------- | -----------: | ---------: |
| libero_spatial | 97.6% | 500 |
| libero_object | 99.0% | 500 |
| libero_goal | 95.0% | 500 |
| libero_10 | 94.0% | 500 |
| **average** | **96.4%** | 2000 |
Reproduce: `lerobot-eval --policy.path=ZibinDong/fastwam_libero_uncond_2cam224 --policy.device=cuda --policy.torch_dtype=float32 --policy.n_action_steps=10 --env.type=libero --env.task=libero_spatial --env.observation_height=256 --env.observation_width=256 --eval.batch_size=1 --eval.n_episodes=50 --seed=0 --env.episode_length=300`.
For LIBERO-10, use `--env.task=libero_10 --env.episode_length=600`:
```bash
lerobot-eval \
--policy.path=ZibinDong/fastwam_libero_uncond_2cam224 \
--policy.device=cuda \
--policy.torch_dtype=float32 \
--policy.n_action_steps=10 \
--env.type=libero \
--env.task=libero_10 --env.observation_height=256 --env.observation_width=256 \
--eval.batch_size=1 \
--eval.n_episodes=50 \
--seed=0 --env.episode_length=600
```
+113 -2
View File
@@ -1,6 +1,13 @@
## Research Paper
Paper: https://research.nvidia.com/labs/gear/gr00t-n1_5/
GR00T N1 technical report (covers the GR00T N1.x family, including N1.7): https://arxiv.org/abs/2503.14734
GR00T N1.7 model card: https://huggingface.co/nvidia/GR00T-N1.7-3B
GR00T N1.5 research page (earlier version): https://research.nvidia.com/labs/gear/gr00t-n1_5/
> GR00T N1.5 support was removed from LeRobot; the last release supporting it is `lerobot==0.5.1`.
> Current releases support GR00T N1.7 only.
## Repository
@@ -24,4 +31,108 @@ Code: https://github.com/NVIDIA/Isaac-GR00T
Blog: https://developer.nvidia.com/isaac/gr00t
Hugging Face Model: https://huggingface.co/nvidia/GR00T-N1.5-3B
Hugging Face Models:
- GR00T N1.7: https://huggingface.co/nvidia/GR00T-N1.7-3B
- GR00T N1.7 LIBERO checkpoints: https://huggingface.co/nvidia/GR00T-N1.7-LIBERO
<details>
<summary><b>Original-vs-LeRobot parity test</b></summary>
## Original-vs-LeRobot parity test
`tests/policies/groot/test_groot_vs_original.py` verifies this LeRobot
reimplementation of GR00T N1.7 (Qwen3-VL backbone + flow-matching action head)
against NVIDIA's original `gr00t` package with two comparisons, each parametrized
over every embodiment tag present in the checkpoint:
1. **Model parity** — given byte-identical pre-processed inputs and the same
flow-matching seed (recorded in each artifact), both implementations must produce
the **same raw model output** (`get_action(...)["action_pred"]`, the normalized
flow-matching prediction). Output shapes must match exactly; any action-horizon
or action-dim mismatch fails the test.
2. **Preprocessor parity** — given the identical raw observations (per-camera
frames, state vectors, language instruction), LeRobot's own preprocessor pipeline
(real Qwen3-VL chat template / tokenizer / image packing + checkpoint-driven
state normalization, no mocks) must produce the **same collated model inputs**
(`input_ids`, `attention_mask`, `pixel_values`, `image_grid_thw`, `state`,
`embodiment_id`) as the original package's processor.
### Why two environments
The original `gr00t` package pins `transformers==4.57.3` (Python 3.10); this
integration requires `transformers>=5.x` (Qwen3-VL). Under 5.x, `PretrainedConfig`
is itself a defaulted dataclass, so the original config dataclasses fail to import
(`non-default argument follows default argument`). The two implementations therefore
**cannot be imported in the same Python process**.
So the test uses a **producer / consumer** split across two venvs:
1. **Producer**`tests/policies/groot/utils/dump_original_n1_7.py`, run in the _original_
gr00t venv. For each embodiment it builds dummy inputs generically from the
checkpoint metadata (state dims from `statistics.json`; camera/language keys from
the processor modality configs), runs the original model, and saves to one `.npz`
per tag: the raw observations (`raw::` keys), the exact collated inputs
(`in::` keys), the seed, and the raw `action_pred`.
2. **Consumer** — the pytest above, run in the _LeRobot_ venv. It discovers every
`.npz`; the model-parity case replays the byte-identical collated inputs through
the LeRobot model with the recorded seed and asserts the outputs match, and the
preprocessor-parity case replays the raw observations through LeRobot's full
preprocessor pipeline and asserts the collated tensors match.
> Artifacts generated by older versions of the dump script contain no `raw::`
> fields; the preprocessor-parity case then **skips** with a regeneration hint.
> Re-run the producer to refresh them.
### Fairness controls
- **Same pre-processed inputs (model parity)** — the original processor's `input_ids`,
`pixel_values`, `image_grid_thw`, `attention_mask`, `state`, `embodiment_id` are
fed verbatim to the LeRobot model (no re-tokenization / re-normalization), so the
model comparison isolates the model. LeRobot's own tokenization / image packing is
covered separately by the preprocessor-parity case, which compares its output
against those same collated tensors from identical raw observations.
- **Same precision + attention kernel** — both sides run **fp32 + SDPA**. The
original defaults to `use_flash_attention=True` (flash_attention_2 + bf16); the
producer forces SDPA + fp32. (With the defaults the gap is ~3e-2 — pure
kernel/rounding noise, not an implementation difference.)
- **Same flow-matching seed** — fixed right before sampling on both sides; the
producer records it in each artifact (`--seed`, default 42) and the consumer
replays the recorded value.
### How to run
```bash
# Resolve a local checkpoint (GR00T-N1.7-LIBERO / libero_10)
CKPT=$(python - <<'PY'
import os
from huggingface_hub import snapshot_download
print(os.path.join(snapshot_download("nvidia/GR00T-N1.7-LIBERO",
allow_patterns=["libero_10/*"]), "libero_10"))
PY
)
# 1) Produce the original-side artifacts for all embodiments (original gr00t venv, CUDA)
CUDA_VISIBLE_DEVICES=0 /path/to/Isaac-GR00T/.venv-original/bin/python \
tests/policies/groot/utils/dump_original_n1_7.py \
--ckpt "$CKPT" --out-dir tests/policies/groot/artifacts --device cuda --seed 42
# 2) Run the parity test (LeRobot venv) — one parametrized case per embodiment
CUDA_VISIBLE_DEVICES=0 GROOT_PARITY_DEVICE=cuda \
uv run pytest tests/policies/groot/test_groot_vs_original.py -v -s
```
The `.npz` artifacts are local-only (gitignored, ~610 MB each) and are regenerated by
the producer; they are never committed. The tests **skip** (do not fail) on CI or
when the checkpoint / artifacts are absent.
#### Env knobs (all optional)
| Var | Default | Purpose |
| ----------------------------------------- | -------------------------------- | ------------------------------------- |
| `GROOT_N1_7_PARITY_DIR` | `tests/policies/groot/artifacts` | directory of per-tag `.npz` artifacts |
| `GROOT_N1_7_LIBERO_CKPT` | auto (HF cache) | override checkpoint dir |
| `GROOT_PARITY_DEVICE` | `cuda` if available | `cpu` or `cuda` |
| `GROOT_PARITY_ATOL` / `GROOT_PARITY_RTOL` | `1e-3` | comparison tolerance |
</details>
+2 -2
View File
@@ -161,7 +161,7 @@ lerobot-record \
--dataset.private=true \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--display_data=true
```
@@ -203,7 +203,7 @@ lerobot-record \
--dataset.private=true \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
# --dataset.camera_encoder.vcodec=auto \
# --dataset.rgb_encoder.vcodec=auto \
--display_data=true
```
+1 -1
View File
@@ -166,7 +166,7 @@ lerobot-train \
--output_dir=./outputs/smolvla_robocasa_CloseFridge \
--steps=100000 \
--batch_size=4 \
--eval_freq=5000 \
--env_eval_freq=5000 \
--eval.batch_size=1 \
--eval.n_episodes=5 \
--save_freq=10000
+1 -1
View File
@@ -122,7 +122,7 @@ The video below shows the sequence of steps for setting the motor ids.
#### Follower
Connect the usb cable from your computer and the power supply to the follower arm's controller board. Then, run the following command or run the API example with the port you got from the previous step. You'll also need to give your leader arm a name with the `id` parameter.
Connect the usb cable from your computer and the power supply to the follower arm's controller board. Then, run the following command or run the API example with the port you got from the previous step. You'll also need to give your follower arm a name with the `id` parameter.
<hfoptions id="setup_motors">
<hfoption id="Command">
+20 -20
View File
@@ -17,7 +17,7 @@ This makes `save_episode()` near-instant (the video is already encoded by the ti
| Parameter | CLI Flag | Type | Default | Description |
| ----------------------- | --------------------------------- | ------------- | ------------- | ----------------------------------------------------------------- |
| `streaming_encoding` | `--dataset.streaming_encoding` | `bool` | `True` | Enable real-time encoding during capture |
| `vcodec` | `--dataset.camera_encoder.vcodec` | `str` | `"libsvtav1"` | Video codec. `"auto"` detects best HW encoder |
| `vcodec` | `--dataset.rgb_encoder.vcodec` | `str` | `"libsvtav1"` | Video codec. `"auto"` detects best HW encoder |
| `encoder_threads` | `--dataset.encoder_threads` | `int \| None` | `None` (auto) | Threads per encoder instance. `None` will leave the vcoded decide |
| `encoder_queue_maxsize` | `--dataset.encoder_queue_maxsize` | `int` | `30` | Max buffered frames per camera (~1s at 30fps). Consumes RAM |
@@ -82,15 +82,15 @@ Use HW encoding when:
### Available HW Encoders
| Encoder | Platform | Hardware | CLI Value |
| ------------------- | ------------- | ------------------------------------------------------------------------------------------------ | --------------------------------------------------- |
| `h264_videotoolbox` | macOS | Apple Silicon / Intel | `--dataset.camera_encoder.vcodec=h264_videotoolbox` |
| `hevc_videotoolbox` | macOS | Apple Silicon / Intel | `--dataset.camera_encoder.vcodec=hevc_videotoolbox` |
| `h264_nvenc` | Linux/Windows | NVIDIA GPU | `--dataset.camera_encoder.vcodec=h264_nvenc` |
| `hevc_nvenc` | Linux/Windows | NVIDIA GPU | `--dataset.camera_encoder.vcodec=hevc_nvenc` |
| `h264_vaapi` | Linux | Intel/AMD GPU | `--dataset.camera_encoder.vcodec=h264_vaapi` |
| `h264_qsv` | Linux/Windows | Intel Quick Sync | `--dataset.camera_encoder.vcodec=h264_qsv` |
| `auto` | Any | Probes the system for available HW encoders. Falls back to `libsvtav1` if no HW encoder is found | `--dataset.camera_encoder.vcodec=auto` |
| Encoder | Platform | Hardware | CLI Value |
| ------------------- | ------------- | ------------------------------------------------------------------------------------------------ | ------------------------------------------------ |
| `h264_videotoolbox` | macOS | Apple Silicon / Intel | `--dataset.rgb_encoder.vcodec=h264_videotoolbox` |
| `hevc_videotoolbox` | macOS | Apple Silicon / Intel | `--dataset.rgb_encoder.vcodec=hevc_videotoolbox` |
| `h264_nvenc` | Linux/Windows | NVIDIA GPU | `--dataset.rgb_encoder.vcodec=h264_nvenc` |
| `hevc_nvenc` | Linux/Windows | NVIDIA GPU | `--dataset.rgb_encoder.vcodec=hevc_nvenc` |
| `h264_vaapi` | Linux | Intel/AMD GPU | `--dataset.rgb_encoder.vcodec=h264_vaapi` |
| `h264_qsv` | Linux/Windows | Intel Quick Sync | `--dataset.rgb_encoder.vcodec=h264_qsv` |
| `auto` | Any | Probes the system for available HW encoders. Falls back to `libsvtav1` if no HW encoder is found | `--dataset.rgb_encoder.vcodec=auto` |
> [!NOTE]
> In order to use the HW accelerated encoders you might need to upgrade your GPU drivers.
@@ -100,15 +100,15 @@ Use HW encoding when:
## 5. Troubleshooting
| Symptom | Likely Cause | Fix |
| ------------------------------------------------------------------ | -------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| System freezes or choppy robot movement or Rerun visualization lag | CPU starved (100% load usage) | Close other apps, reduce encoding throughput, lower `encoder_threads`, use `h264`, use `display_data=False`. If the CPU continues to be at 100% then it might be insufficient for your setup, consider `--dataset.streaming_encoding=false` or HW encoding (`--dataset.camera_encoder.vcodec=auto`) |
| "Encoder queue full" warnings or dropped frames in dataset | Encoder can't keep up (Queue overflow) | If CPU is not at 100%: Increase `encoder_threads`, increase `encoder_queue_maxsize` or use HW encoding (`--dataset.camera_encoder.vcodec=auto`). |
| High RAM usage | Queue filling faster than encoding | `encoder_threads` too low or CPU insufficient. Reduce `encoder_queue_maxsize` or use HW encoding |
| Large video files | Using HW encoder or H.264 | Expected trade-off. Switch to `libsvtav1` if CPU allows |
| `save_episode()` still slow | `streaming_encoding` is `False` | Set `--dataset.streaming_encoding=true` |
| Encoder thread crash | Codec not available or invalid settings | Check `vcodec` is installed, try `--dataset.camera_encoder.vcodec=auto` |
| Recorded dataset is missing frames | CPU/GPU starvation or occasional load spikes | If ~5% of frames are missing, your system is likely overloaded — follow the recommendations above. If fewer frames are missing (~2%), they are probably due to occasional transient load spikes (often at startup) and can be considered expected. |
| Symptom | Likely Cause | Fix |
| ------------------------------------------------------------------ | -------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| System freezes or choppy robot movement or Rerun visualization lag | CPU starved (100% load usage) | Close other apps, reduce encoding throughput, lower `encoder_threads`, use `h264`, use `display_data=False`. If the CPU continues to be at 100% then it might be insufficient for your setup, consider `--dataset.streaming_encoding=false` or HW encoding (`--dataset.rgb_encoder.vcodec=auto`) |
| "Encoder queue full" warnings or dropped frames in dataset | Encoder can't keep up (Queue overflow) | If CPU is not at 100%: Increase `encoder_threads`, increase `encoder_queue_maxsize` or use HW encoding (`--dataset.rgb_encoder.vcodec=auto`). |
| High RAM usage | Queue filling faster than encoding | `encoder_threads` too low or CPU insufficient. Reduce `encoder_queue_maxsize` or use HW encoding |
| Large video files | Using HW encoder or H.264 | Expected trade-off. Switch to `libsvtav1` if CPU allows |
| `save_episode()` still slow | `streaming_encoding` is `False` | Set `--dataset.streaming_encoding=true` |
| Encoder thread crash | Codec not available or invalid settings | Check `vcodec` is installed, try `--dataset.rgb_encoder.vcodec=auto` |
| Recorded dataset is missing frames | CPU/GPU starvation or occasional load spikes | If ~5% of frames are missing, your system is likely overloaded — follow the recommendations above. If fewer frames are missing (~2%), they are probably due to occasional transient load spikes (often at startup) and can be considered expected. |
## 6. Recommended Configurations
@@ -146,7 +146,7 @@ On very constrained systems, streaming encoding may compete too heavily with the
# 2camsx 640x480x3 @30fps: Requires some tuning.
# Use H.264, disable streaming, consider batching encoding
lerobot-record --dataset.camera_encoder.vcodec=h264 --dataset.streaming_encoding=false ...
lerobot-record --dataset.rgb_encoder.vcodec=h264 --dataset.streaming_encoding=false ...
```
## 7. Closing note
+51 -8
View File
@@ -11,8 +11,9 @@ LeRobot provides several utilities for manipulating datasets:
3. **Merge Datasets** - Combine multiple datasets into one. The datasets must have identical features, and episodes are concatenated in the order specified in `repo_ids`
4. **Add Features** - Add new features to a dataset
5. **Remove Features** - Remove features from a dataset
6. **Convert to Video** - Convert image-based datasets to video format for efficient storage
7. **Show the Info of Datasets** - Show the summary of datasets information such as number of episode etc.
6. **Convert to Video** - Convert image-based datasets to video format for efficient storage (RGB and depth cameras are encoded with separate encoders)
7. **Re-encode Videos** - Re-encode an existing video dataset's RGB and/or depth streams with new encoder settings
8. **Show the Info of Datasets** - Show the summary of datasets information such as number of episode etc.
The core implementation is in `lerobot.datasets.dataset_tools`.
An example script detailing how to use the tools API is available in `examples/dataset/use_dataset_tools.py`.
@@ -117,10 +118,19 @@ lerobot-edit-dataset \
--repo_id lerobot/pusht_image \
--operation.type convert_image_to_video \
--operation.output_dir outputs/pusht_video \
--operation.camera_encoder.vcodec libsvtav1 \
--operation.camera_encoder.pix_fmt yuv420p \
--operation.camera_encoder.g 2 \
--operation.camera_encoder.crf 30
--operation.rgb_encoder.vcodec libsvtav1 \
--operation.rgb_encoder.pix_fmt yuv420p \
--operation.rgb_encoder.g 2 \
--operation.rgb_encoder.crf 30
# Convert a dataset that includes depth maps, customizing the depth encoder
lerobot-edit-dataset \
--repo_id lerobot/pusht_image \
--operation.type convert_image_to_video \
--operation.output_dir outputs/pusht_video \
--operation.depth_encoder.depth_min 0.01 \
--operation.depth_encoder.depth_max 10.0 \
--operation.depth_encoder.use_log true
# Convert only specific episodes
lerobot-edit-dataset \
@@ -147,11 +157,42 @@ lerobot-edit-dataset \
**Parameters:**
- `output_dir`: Custom output directory (optional - by default uses `new_repo_id` or `{repo_id}_video`)
- `camera_encoder`: Video encoder settings — all sub-fields accessible via `--operation.camera_encoder.<field>. See [Video Encoding Parameters](./video_encoding_parameters) for more details.
- `rgb_encoder`: Video encoder settings applied to RGB cameras — all sub-fields accessible via `--operation.rgb_encoder.<field>`. See [Video Encoding Parameters](./video_encoding_parameters) for more details.
- `depth_encoder`: Video encoder settings applied to depth-map cameras (e.g. from an Intel RealSense). In addition to the standard encoder fields it exposes the depth quantization knobs (`depth_min`, `depth_max`, `shift`, `use_log`), accessible via `--operation.depth_encoder.<field>`. These quantization settings are persisted to the dataset metadata so depth can be dequantized back to physical units on load. See the [Depth streams](./video_encoding_parameters#depth-streams) section for details.
- `episode_indices`: List of specific episodes to convert (default: all episodes)
- `num_workers`: Number of parallel workers for processing (default: 4)
**Note:** The resulting dataset will be a proper LeRobotDataset with all cameras encoded as videos in the `videos/` directory, with parquet files containing only metadata (no raw image data). All episodes, stats, and tasks are preserved.
**Note:** The resulting dataset will be a proper LeRobotDataset with all cameras encoded as videos in the `videos/` directory, with parquet files containing only metadata (no raw image data). Depth-map cameras are detected automatically and routed to the `depth_encoder`, while RGB cameras use the `rgb_encoder`. All episodes, stats, and tasks are preserved.
#### Re-encode Videos
Re-encode the videos of an existing video dataset with different encoder settings, without going back to raw frames. RGB videos use the `rgb_encoder` and depth videos use the `depth_encoder`. Provide only the encoder(s) you want to re-encode; the other stream type is left untouched.
```bash
# Re-encode all RGB videos with new settings (saves to lerobot/pusht_reencoded by default)
lerobot-edit-dataset \
--repo_id lerobot/pusht \
--operation.type reencode_videos \
--operation.rgb_encoder.vcodec h264 \
--operation.rgb_encoder.pix_fmt yuv420p \
--operation.rgb_encoder.crf 23
# Re-encode both RGB and depth videos in a dataset with depth maps
lerobot-edit-dataset \
--repo_id lerobot/pusht_depth \
--operation.type reencode_videos \
--operation.rgb_encoder.vcodec h264 \
--operation.depth_encoder.crf 50
```
**Parameters:**
- `rgb_encoder`: Encoder settings applied to every RGB video. Omit to skip re-encoding RGB videos.
- `depth_encoder`: Encoder settings applied to every depth video. Omit to skip re-encoding depth videos.
- `num_workers`: Number of parallel workers for processing.
> [!NOTE]
> When re-encoding depth videos, the existing depth quantization parameters (`depth_min`, `depth_max`, `shift`, `use_log`) and the `is_depth_map` flag are **preserved** — re-encoding only changes the codec/quality of the stored stream, not how depth is dequantized on load.
### Show the information of datasets
@@ -224,6 +265,8 @@ lerobot-dataset-viz \
Once executed, the tool opens `rerun.io` and displays the camera streams, robot states, and actions for the selected episode.
To use [Foxglove](https://foxglove.dev) instead of Rerun, install the extra add `--display-mode foxglove`. This starts a WebSocket server (connect the Foxglove app to `ws://127.0.0.1:8765`) that serves the episode as a seekable timeline you can play/pause and scrub.
For advanced usage—including visualizing datasets stored on a remote server—run:
```bash
+167 -29
View File
@@ -2,16 +2,15 @@
When video storage is enabled, LeRobot stores each camera stream as an **MP4** file instead of saving one image file per timestep. Video encoding compresses across time, which usually cuts dataset size and I/O compared to a pile of PNG, while keeping MP4 — a format every player and loader understands.
Encoding frames into an MP4 is a full FFmpeg pipeline: choice of encoder, pixel format, GOP/keyframes, quality vs. speed, and optional extra encoder flags. Most of these knobs are user-tunable through `camera_encoder`, a nested `VideoEncoderConfig` (`lerobot.configs.video.VideoEncoderConfig`) passed through PyAV.
Encoding frames into an MP4 is a full FFmpeg pipeline: choice of encoder, pixel format, GOP/keyframes, quality vs. speed, and optional extra encoder flags. Most of these knobs are user-tunable through `rgb_encoder`, a nested `RGBEncoderConfig` (`lerobot.configs.video.RGBEncoderConfig`) passed through PyAV.
You can set these parameters from the CLI with `--dataset.camera_encoder.<field>` (e.g. with `lerobot-record` or `lerobot-rollout`). The same block applies to every camera video stream in that run.
You can set these parameters from the CLI with `--dataset.rgb_encoder.<field>` (e.g. with `lerobot-record` or `lerobot-rollout`). The same block applies to every camera video stream in that run.
<Tip>
Video storage must be on for `camera_encoder` to have any effect —
`use_videos=True` in Python APIs, or `--dataset.video=true` on the CLI (the
recording default). With video off, inputs stay as images and `camera_encoder`
is ignored.
</Tip>
> [!TIP]
> Video storage must be on for `rgb_encoder` to have any effect —
> `use_videos=True` in Python APIs, or `--dataset.video=true` on the CLI (the
> recording default). With video off, inputs stay as images and `rgb_encoder` is
> ignored.
For details on **when** frames are written vs. encoded (streaming vs. post-episode), queues, and other top-level `--dataset.*` switches, see [Streaming Video Encoding](./streaming_video_encoding). For an encoding-parameter comparison and experiments, see the [video-benchmark Space](https://huggingface.co/spaces/lerobot/video-benchmark).
@@ -33,9 +32,9 @@ lerobot-record \
--dataset.single_task="Grab the cube" \
--dataset.streaming_encoding=true \
--dataset.encoder_threads=2 \
--dataset.camera_encoder.vcodec=h264 \
--dataset.camera_encoder.preset=fast \
--dataset.camera_encoder.extra_options={"tune": "film", "profile:v": "high", "bf": 2} \
--dataset.rgb_encoder.vcodec=h264 \
--dataset.rgb_encoder.preset=fast \
--dataset.rgb_encoder.extra_options={"tune": "film", "profile:v": "high", "bf": 2} \
--display_data=true
```
@@ -43,14 +42,12 @@ lerobot-record \
## Tuning parameters
<Tip warning={true}>
The defaults are tuned to balance **compression ratio**, **visual quality**, and **decoding/seek speed** for typical robotics datasets. Changing them can affect both recording (CPU load, frame drops) and training (decoding throughput, image quality).
> [!WARNING]
> The defaults are tuned to balance **compression ratio**, **visual quality**, and **decoding/seek speed** for typical robotics datasets. Changing them can affect both recording (CPU load, frame drops) and training (decoding throughput, image quality).
>
> Only override these parameters if you have a specific reason to, and measure the impact on your pipeline before relying on the new settings.
Only override these parameters if you have a specific reason to, and measure the impact on your pipeline before relying on the new settings.
</Tip>
All flags below are prefixed with `--dataset.camera_encoder.` on the CLI.
All flags below are prefixed with `--dataset.rgb_encoder.` on the CLI.
| Parameter | Type | Default | Description |
| --------------- | ---------------- | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
@@ -65,6 +62,144 @@ All flags below are prefixed with `--dataset.camera_encoder.` on the CLI.
---
## Depth streams
Depth maps (Intel RealSense, Reachy 2) are stored as their **own video streams** alongside the RGB streams. Raw depth (`uint16` millimetres or `float32` metres) can't survive an 8-bit codec, so LeRobot **quantizes** each map to a 12-bit code (`[0, 4095]`) — logarithmically by default, to match the `1/depth` error profile of depth sensors — then packs it into a high-bit-depth pixel format (`gray12le`) and encodes it with a 12-bit codec.
<div style="margin:28px 0;padding:14px 0;">
<div style="margin:0 auto;display:flex;flex-wrap:wrap;justify-content:center;align-items:stretch;gap:6px;font-family:'Source Sans 3',ui-sans-serif,system-ui,sans-serif;font-size:14px;font-weight:600;color:#1B1B1D;">
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#DBEAFE;color:#1D4ED8;border-radius:9px;padding:8px 12px;">
<span>Raw depth</span>
<span style="font-size:11px;font-weight:400;color:#3B6FD4;white-space:nowrap;">
uint16 mm
<br />
float32 m
</span>
</span>
<span style="display:flex;align-items:center;font-size:16px;color:#C3CBD9;">
</span>
<div style="border:2px dashed #C4B5FD;border-radius:13px;padding:18px 12px 12px;position:relative;display:flex;align-items:stretch;gap:6px;">
<span style="position:absolute;top:-10px;left:12px;background:#fff;padding:0 6px;font-size:11px;font-weight:700;color:#7E22CE;text-transform:uppercase;letter-spacing:0.5px;white-space:nowrap;">
Record time
</span>
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#F3E8FF;color:#7E22CE;border-radius:9px;padding:8px 12px;">
<span>Clip</span>
<span style="font-size:11px;font-weight:400;color:#9061C2;white-space:nowrap;">
to [depth_min,
<br />
depth_max]
</span>
</span>
<span style="display:flex;align-items:center;font-size:16px;color:#C3CBD9;">
</span>
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#F3E8FF;color:#7E22CE;border-radius:9px;padding:8px 12px;">
<span>Quantize</span>
<span style="font-size:11px;font-weight:400;color:#9061C2;white-space:nowrap;">
12-bit codes 04095
<br />
log (default) or linear
</span>
</span>
<span style="display:flex;align-items:center;font-size:16px;color:#C3CBD9;">
</span>
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#F3E8FF;color:#7E22CE;border-radius:9px;padding:8px 12px;">
<span>Pack</span>
<span style="font-size:11px;font-weight:400;color:#9061C2;white-space:nowrap;">
into gray12le
<br />
plane
</span>
</span>
<span style="display:flex;align-items:center;font-size:16px;color:#C3CBD9;">
</span>
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#F3E8FF;color:#7E22CE;border-radius:9px;padding:8px 12px;">
<span>Encode</span>
<span style="font-size:11px;font-weight:400;color:#9061C2;white-space:nowrap;">
HEVC
<br />
Main 12
</span>
</span>
</div>
<span style="display:flex;align-items:center;font-size:16px;color:#C3CBD9;">
</span>
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#FEF3C7;color:#B45309;border-radius:9px;padding:8px 12px;">
<span>MP4</span>
<span style="font-size:11px;font-weight:400;color:#C77D18;white-space:nowrap;">
stored
<br />
stream
</span>
</span>
<span style="display:flex;align-items:center;font-size:16px;color:#34A06B;">
</span>
<div style="border:2px dashed #6EE7B7;border-radius:13px;padding:18px 12px 12px;position:relative;display:flex;align-items:center;gap:6px;">
<span style="position:absolute;top:-10px;left:12px;background:#fff;padding:0 6px;font-size:11px;font-weight:700;color:#047857;text-transform:uppercase;letter-spacing:0.5px;white-space:nowrap;">
Load time
</span>
<span style="display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:2px;background:#D1FAE5;color:#047857;border-radius:9px;padding:8px 12px;">
<span>Dequantize</span>
<span style="font-size:11px;font-weight:400;color:#059669;white-space:nowrap;">
to mm / m
</span>
</span>
</div>
</div>
</div>
Configure the depth pipeline through a parallel **`depth_encoder`** block (`DepthEncoderConfig`). It shares every `RGBEncoderConfig` field (`vcodec`, `pix_fmt`, `crf`, …) and adds four quantizer knobs, set via `--dataset.depth_encoder.<field>`:
```bash
lerobot-record \
... \
--dataset.depth_encoder.vcodec=hevc \
--dataset.depth_encoder.depth_min=0.05 \
--dataset.depth_encoder.depth_max=5.0 \
--dataset.depth_encoder.use_log=true
```
| Parameter | Type | Default | Description |
| --------------- | ------- | ------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| `vcodec` | `str` | `"hevc"` | HEVC Main 12 (a 12-bit-capable codec, MP4-compatible). |
| `extra_options` | `dict` | `{"x265-params": "lossless=1"}` | **Depth defaults to lossless** (exact round-trip); `crf` is ignored. Pass `extra_options={}` and set `crf` for a smaller lossy stream. |
| `pix_fmt` | `str` | `"gray12le"` | Single-channel 12-bit pixel format used to carry the quantized codes. |
| `depth_min` | `float` | `0.01` | Depth in metres mapped to quantum `0`. Values below are clipped on decode. |
| `depth_max` | `float` | `10.0` | Depth in metres mapped to quantum `4095`. Values above are clipped on decode. |
| `shift` | `float` | `3.5` | Pre-log offset (metres) used in logarithmic quantization for numerical stability near zero. Must satisfy `depth_min + shift > 0`. |
| `use_log` | `bool` | `True` | If `true`, quantize in log-space (recommended for typical depth sensors). Set to `false` for uniform/linear quantization. |
> [!TIP]
> `depth_min`, `depth_max`, and `shift` are always interpreted in **metres**, regardless of the input depth's unit. Inputs are auto-detected: integer arrays (e.g. `uint16` millimetres straight from a RealSense) are treated as millimetres, floating arrays as metres.
> Pick `depth_min` / `depth_max` to bracket the actual working range of your sensor — quanta outside that range saturate, which can crush detail at the boundaries.
Depth features are flagged with `"is_depth_map": true` in `meta/info.json`, and their quantizer settings (`video.depth_min`, `video.depth_max`, `video.shift`, `video.use_log`) are persisted — which is what lets depth be **dequantized back to physical units** on load.
### Output unit at load time
`depth_encoder` is a **record-time** concern. The unit that depth maps are dequantized to on _load_ (e.g. during training) is set separately by the read-time flag `--dataset.depth_output_unit`:
```bash
lerobot-train \
--dataset.repo_id=<my_username>/<my_dataset_name> \
--dataset.depth_output_unit=m \
--policy.type=act
```
| Parameter | Type | Default | Description |
| ------------------- | ----- | ------- | -------------------------------------------------------------------------------------------- |
| `depth_output_unit` | `str` | `"mm"` | Physical unit depth maps are dequantized to on load: `"mm"` (millimetres) or `"m"` (metres). |
> [!TIP]
> This is purely a decode-time presentation choice — it does **not** alter the stored video or its metadata, so the same dataset can be read as `mm` or `m` without re-encoding. It has no effect on datasets without depth cameras.
---
## Persistence in dataset metadata
After the first episode of a video stream is encoded, the encoder configuration is **persisted into the dataset metadata** (`meta/info.json`) under each video feature, alongside the values probed from the file itself. For a video feature `observation.images.<camera>`, the layout in `info.json` is:
@@ -82,7 +217,7 @@ After the first episode of a video stream is encoded, the encoder configuration
"video.pix_fmt": "yuv420p",
"video.fps": 30,
"video.channels": 3,
"video.is_depth_map": false,
"is_depth_map": false,
"video.g": 2,
"video.crf": 30,
"video.preset": "fast",
@@ -97,15 +232,16 @@ After the first episode of a video stream is encoded, the encoder configuration
Two sources contribute to the `info` block:
- **Stream-derived** (read back from the encoded MP4 with PyAV): `video.height`, `video.width`, `video.codec`, `video.pix_fmt`, `video.fps`, `video.channels`, `video.is_depth_map`, plus `audio.*` if an audio stream is present.
- **Encoder-derived** (taken from `VideoEncoderConfig`): `video.g`, `video.crf`, `video.preset`, `video.fast_decode`, `video.video_backend`, `video.extra_options`.
| Source | Where it comes from | Fields |
| ------------------- | ----------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- |
| **Stream-derived** | Read back from the encoded MP4 with PyAV. | `video.height`, `video.width`, `video.codec`, `video.pix_fmt`, `video.fps`, `video.channels`, `is_depth_map`, `audio.*` |
| **Encoder-derived** | Taken from `RGBEncoderConfig` / `DepthEncoderConfig`. | `video.g`, `video.crf`, `video.preset`, `video.fast_decode`, `video.video_backend`, `video.extra_options` |
<Tip>
This block is populated **once**, from the **first** episode. It assumes every
episode in the dataset was encoded with the same `camera_encoder`. Changing
encoder settings partway through a recording is not supported — the
`info.json` will only reflect the parameters used for the first episode.
</Tip>
> [!IMPORTANT]
> This block is populated **once**, from the **first** episode. It assumes every
> episode in the dataset was encoded with the same `rgb_encoder`. Changing
> encoder settings partway through a recording is not supported — the
> `info.json` will only reflect the parameters used for the first episode.
---
@@ -113,5 +249,7 @@ Two sources contribute to the `info` block:
When aggregating datasets with `merge_datasets`, video files are concatenated as-is (no re-encoding), and encoder fields in `info.json` are merged per-key:
- **Stream-derived fields must match** across sources: `video.codec`, `video.pix_fmt`, `video.height`, `video.width`, `video.fps`. Otherwise FFmpeg's concat demuxer fails.
- **Encoder-tuning fields are merged loosely**: `video.g`, `video.crf`, `video.preset`, `video.fast_decode`, `video.extra_options`. If every source agrees, the value is kept; if not, it's set to `null` (or `{}` for `video.extra_options`) and a warning is logged.
| Merge rule | Fields | Behaviour |
| ------------------ | ---------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Must match** | `video.codec`, `video.pix_fmt`, `video.height`, `video.width`, `video.fps` | Stream-derived fields must match across sources, otherwise FFmpeg's concat demuxer fails. |
| **Merged loosely** | `video.g`, `video.crf`, `video.preset`, `video.fast_decode`, `video.extra_options` | Encoder-tuning fields. If every source agrees, the value is kept; if not, it's set to `null` (or `{}` for `video.extra_options`) and a warning is logged. |
+1 -1
View File
@@ -165,7 +165,7 @@ lerobot-train \
--output_dir=./outputs/smolvla_vlabench_primitive \
--steps=100000 \
--batch_size=4 \
--eval_freq=5000 \
--env_eval_freq=5000 \
--eval.batch_size=1 \
--eval.n_episodes=1 \
--save_freq=10000