{
  "schema_version": "1.1.0",
  "capture_id": "brush-panel-channels",
  "asset_id": "fbeaf25b4865abad",
  "embodiment": "human_egocentric",
  "dataset_type": "observational_demonstration",
  "capture_mode": "rgb_only",
  "instruction": "Hold the detached front panel and brush along its narrow channels.",
  "instruction_source": "curator_supplied",
  "session_group": "maintenance-session-001",
  "split": "sample",
  "modalities": {
    "rgb": true,
    "audio": false,
    "depth": false,
    "camera_intrinsics": false,
    "camera_pose": false,
    "imu": false,
    "robot_actions": false
  },
  "robot_actions": "absent",
  "robot_state": "absent",
  "annotation_accuracy": "not_independently_evaluated",
  "privacy_review": "automated_full_frame_scan_and_assistant_storyboard_review",
  "annotation_review": "assistant_visual_review_with_disclosed_estimation_limits",
  "pose_sample_fps": 10.0,
  "rights": {
    "status": "owner_attested",
    "training_use": true,
    "public_sample_preparation": true,
    "evidence": "The user identified these recordings as iPhone chest-camera captures and authorized curating and publishing the maintenance sample to Diffraction. The existing chosen public sample license is CC BY 4.0. This is a record of user authorization, not an independent signed release."
  },
  "source": {
    "codec": "hevc",
    "width": 1920,
    "height": 1080,
    "pixel_format": "yuv420p10le",
    "color_transfer": "arib-std-b67",
    "color_primaries": "bt2020",
    "color_space": "bt2020nc",
    "rotation_deg": 0,
    "audio_present": true,
    "device_model": "iPhone 15 Pro",
    "device_software": "26.3.1",
    "capture_date": "2026-05-20",
    "source_filename": "IMG_6498.MOV",
    "source_sha256": "ec85fd841efcb0bec77aa857a940a5eee33e551d8f2273fba3fea40c0924fc9b",
    "source_frame_semantics": "zero_based_displayed_source_video_frame",
    "source_time_base": [
      1,
      600
    ],
    "selection": {
      "requested_start_s": 22.0,
      "requested_end_s": 52.0,
      "first_source_frame": 660,
      "last_source_frame": 1559
    },
    "transform": {
      "hdr_to_sdr": true,
      "tone_mapper": "hable",
      "npl": 100,
      "geometry": "display_rotation_applied; no_crop_or_resize",
      "encoding": "H264 CRF16 8bit yuv420p",
      "audio": "omitted",
      "metadata": "source metadata stripped from derivative; selected fields retained here",
      "frame_mapping": "one_to_one_source_display_frames; original_PTS_spacing"
    }
  },
  "license": "cc-by-4.0",
  "capture_mount": "chest (owner-described)",
  "review_method": {
    "reviewer": "assistant_visual_review",
    "method": "RGB storyboard approximately every 2 seconds plus final frame; estimated overlays sampled at start, middle and end",
    "boundary_precision_s": 2.0,
    "independent_human_validation": false,
    "finding": "No visible faces or identifying private text in inspected frames. Full-frame automated face scan returned zero detections. Audio is omitted. This is not an exhaustive manual frame-by-frame privacy audit."
  }
}