chore(format): formatting code, fixing error messages and variable names

src/lerobot/datasets/pyav_utils.py

@@ -177,10 +177,6 @@ def check_video_encoder_config_pyav(config: VideoEncoderConfig) -> None:
     vcodec = config.vcodec
     options = _get_codec_options_by_name(vcodec)
     if not options:
-        logger.warning(
-            "Codec %r is not available in the bundled FFmpeg build; ",
-            vcodec,
-        )
-        return
+        raise ValueError(f"Codec {vcodec!r} is not available in the bundled FFmpeg build")
     _check_pixel_format(config.vcodec, config.pix_fmt)
     _check_codec_options(config.vcodec, config.get_codec_options(), config)

src/lerobot/datasets/video_utils.py

@@ -47,7 +47,7 @@ logger = logging.getLogger(__name__)
 
 # List of hardware encoders to probe for auto-selection. Availability depends on the platform and FFmpeg build.
 # Determines the order of preference for auto-selection when vcodec="auto" is used.
-HW_ENCODERS = [
+HW_VIDEO_CODECS = [
     "h264_videotoolbox",  # macOS
     "hevc_videotoolbox",  # macOS
     "h264_nvenc",  # NVIDIA GPU
@@ -56,7 +56,7 @@ HW_ENCODERS = [
     "h264_qsv",  # Intel Quick Sync
 ]
 
-VALID_VIDEO_CODECS = {"h264", "hevc", "libsvtav1", "auto"} | set(HW_ENCODERS)
+VALID_VIDEO_CODECS = {"h264", "hevc", "libsvtav1", "auto"} | set(HW_VIDEO_CODECS)
 
 LIBSVTAV1_DEFAULT_PRESET: int = 12
 
@@ -126,8 +126,8 @@ class VideoEncoderConfig:
         if self.vcodec not in VALID_VIDEO_CODECS:
             raise ValueError(f"Invalid vcodec '{self.vcodec}'. Must be one of: {sorted(VALID_VIDEO_CODECS)}")
         if self.vcodec == "auto":
-            available = self.detect_available_encoders(HW_ENCODERS)
-            for encoder in HW_ENCODERS:
+            available = self.detect_available_encoders(HW_VIDEO_CODECS)
+            for encoder in HW_VIDEO_CODECS:
                 if encoder in available:
                     logger.info(f"Auto-selected video codec: {encoder}")
                     self.vcodec = encoder
@@ -137,13 +137,12 @@ class VideoEncoderConfig:
 
         if self.detect_available_encoders(self.vcodec):
             logger.info(f"Using video codec: {self.vcodec}")
-            self.vcodec = self.vcodec
             return
         raise ValueError(f"Unsupported video codec: {self.vcodec} with video backend {self.video_backend}")
 
     def get_codec_options(
         self, encoder_threads: int | None = None, as_strings: bool = False
-    ) -> dict[str, str]:
+    ) -> dict[str, Any]:
         """Translate the tuning fields to codec-specific FFmpeg options.
 
         ``VideoEncoderConfig.extra_options`` are merged last but never override a structured field.

tests/datasets/test_video_encoding.py

@@ -298,7 +298,7 @@ class TestEncoderDetection:
 
     @require_videotoolbox
     def test_auto_picks_videotoolbox_when_available(self):
-        """``h264_videotoolbox`` sits at the top of ``HW_ENCODERS`` so it wins when present."""
+        """``h264_videotoolbox`` sits at the top of ``HW_VIDEO_CODECS`` so it wins when present."""
         cfg = VideoEncoderConfig(vcodec="auto")
         assert cfg.vcodec == "h264_videotoolbox"