lucazanett/wiping_03_reencoded

This dataset was created using LeRobot.

This is lucazanett/wiping_03 with the videos re-encoded at a GOP of 2 (keyframe every 2 frames). The original was encoded by h264_nvenc with FFmpeg's default GOP of 250, which made random-access frame reads during training decode a whole GOP per sample. Frame count, timestamps, fps, codec and all parquet metadata are unchanged; only the keyframe density differs. Measured dataloader throughput went from 51.5 to 313.3 samples/s (6.1x). Re-encode PSNR vs. the original is ~49-51 dB.

Dataset Structure

meta/info.json:

{
    "codebase_version": "v3.0",
    "robot_type": "custom_manipulator",
    "total_episodes": 50,
    "total_frames": 24372,
    "total_tasks": 1,
    "chunks_size": 1000,
    "data_files_size_in_mb": 100,
    "video_files_size_in_mb": 200,
    "fps": 30,
    "splits": {
        "train": "0:50"
    },
    "data_path": "data/chunk-{chunk_index:03d}/file-{file_index:03d}.parquet",
    "video_path": "videos/{video_key}/chunk-{chunk_index:03d}/file-{file_index:03d}.mp4",
    "features": {
        "action": {
            "dtype": "float32",
            "names": [
                "position.x",
                "position.y",
                "position.z",
                "orientation.x",
                "orientation.y",
                "orientation.z",
                "stiffness.tx",
                "stiffness.ty",
                "stiffness.tz",
                "stiffness.rx",
                "stiffness.ry",
                "stiffness.rz",
                "gripper"
            ],
            "shape": [
                13
            ]
        },
        "observation.state": {
            "dtype": "float32",
            "names": [
                "position.x",
                "position.y",
                "position.z",
                "orientation.x",
                "orientation.y",
                "orientation.z",
                "gripper",
                "gripper_force",
                "obj_detected"
            ],
            "shape": [
                9
            ]
        },
        "observation.images.wrist_rgb": {
            "dtype": "video",
            "shape": [
                480,
                640,
                3
            ],
            "names": [
                "height",
                "width",
                "channels"
            ],
            "info": {
                "video.height": 480,
                "video.width": 640,
                "video.codec": "h264",
                "video.pix_fmt": "yuv420p",
                "video.is_depth_map": false,
                "video.fps": 30,
                "video.channels": 3,
                "has_audio": false
            }
        },
        "observation.images.behind_rgb": {
            "dtype": "video",
            "shape": [
                480,
                640,
                3
            ],
            "names": [
                "height",
                "width",
                "channels"
            ],
            "info": {
                "video.height": 480,
                "video.width": 640,
                "video.codec": "h264",
                "video.pix_fmt": "yuv420p",
                "video.is_depth_map": false,
                "video.fps": 30,
                "video.channels": 3,
                "has_audio": false
            }
        },
        "observation.environment_state": {
            "dtype": "float32",
            "names": [
                "ft_fx",
                "ft_fy",
                "ft_fz",
                "ft_tx",
                "ft_ty",
                "ft_tz"
            ],
            "shape": [
                6
            ]
        },
        "timestamp": {
            "dtype": "float32",
            "shape": [
                1
            ],
            "names": null
        },
        "frame_index": {
            "dtype": "int64",
            "shape": [
                1
            ],
            "names": null
        },
        "episode_index": {
            "dtype": "int64",
            "shape": [
                1
            ],
            "names": null
        },
        "index": {
            "dtype": "int64",
            "shape": [
                1
            ],
            "names": null
        },
        "task_index": {
            "dtype": "int64",
            "shape": [
                1
            ],
            "names": null
        }
    }
}

Citation

BibTeX:

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