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{
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    "video_path": "videos/{video_key}/chunk-{chunk_index:03d}/file-{file_index:03d}.mp4",
    "features": {
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                "l_arm_angular.z",
                "l_hand_pinky",
                "l_hand_ring",
                "l_hand_middle",
                "l_hand_index",
                "l_hand_thumb1",
                "l_hand_thumb2",
                "r_arm_linear.x",
                "r_arm_linear.y",
                "r_arm_linear.z",
                "r_arm_angular.x",
                "r_arm_angular.y",
                "r_arm_angular.z",
                "r_hand_pinky",
                "r_hand_ring",
                "r_hand_middle",
                "r_hand_index",
                "r_hand_thumb1",
                "r_hand_thumb2",
                "base_joy.x",
                "base_joy.y"
            ]
        },
        "observation.state": {
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            "names": [
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                "l_arm_j2.pos",
                "l_arm_j3.pos",
                "l_arm_j4.pos",
                "l_arm_j5.pos",
                "l_arm_j6.pos",
                "l_arm_j7.pos",
                "l_hand_pinky.pos",
                "l_hand_ring.pos",
                "l_hand_middle.pos",
                "l_hand_index.pos",
                "l_hand_thumb1.pos",
                "l_hand_thumb2.pos",
                "r_arm_j1.pos",
                "r_arm_j2.pos",
                "r_arm_j3.pos",
                "r_arm_j4.pos",
                "r_arm_j5.pos",
                "r_arm_j6.pos",
                "r_arm_j7.pos",
                "r_hand_pinky.pos",
                "r_hand_ring.pos",
                "r_hand_middle.pos",
                "r_hand_index.pos",
                "r_hand_thumb1.pos",
                "r_hand_thumb2.pos",
                "l_arm_j1.effort",
                "l_arm_j2.effort",
                "l_arm_j3.effort",
                "l_arm_j4.effort",
                "l_arm_j5.effort",
                "l_arm_j6.effort",
                "l_arm_j7.effort",
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                "l_hand_ring.effort",
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        },
        "observation.images.user": {
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            ],
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}