{
  "clip_id": "sample_09_denting_and_filing",
  "video_file": "sample_09_denting_and_filing.mp4",
  "environment": "roadside_repair_shop",
  "task": "Auto body — denting and angle-grinder filing",
  "duration_seconds": 300.491,
  "fps": 30,
  "resolution": "3840x2160",
  "codec": "hevc",
  "camera_view": "monocular_egocentric",
  "capture_device": "Samsung Galaxy S24",
  "manipulator_details": {
    "hand_used": "right_dominant",
    "left_hand_pct": 4.09,
    "right_hand_pct": 26.69,
    "two_hands_pct": 1.25,
    "object_target": "sander",
    "hands_visible_pct": 29.53
  },
  "anonymization": {
    "identifiable_faces_present": false,
    "face_blur_required": false,
    "face_blur_applied": false,
    "face_privacy_review": "manual_pass",
    "face_privacy_note": "Human review confirmed no identifiable faces in delivered frames; pixel blur not required.",
    "audio_removed": true,
    "pii_scanned": true,
    "notes": "No identifiable faces in frame during review; audio stripped from deliverable. Human review confirmed no identifiable faces in delivered frames; pixel blur not required."
  },
  "consent_signed": true,
  "consent_reference": "consent/worker_consent_summary.md",
  "annotations": {
    "action_segment_count": 24,
    "caption": "Auto-body worker sands a silver car door with a two-handheld electric sander (gadget): horizontal, vertical, and zigzag strokes to remove paint and level filler, rotates the pad for edge detail, powers off for hand scrubbing, closes doors, and repeats on a second door panel.",
    "hand_keypoints_jsonl": "sample_09_denting_and_filing_hand_keypoints.jsonl",
    "hand_keypoints_frames": 9014,
    "hand_pose_label": "estimated_2d"
  },
  "qa_flags": {
    "continuous_integration_qa_pass": true,
    "resolution_verified": true,
    "duration_alignment_verified": true,
    "schema_validated": true,
    "audio_stripped": true,
    "ptp_synchronized": "not_applicable",
    "hand_object_occlusion_logged": true
  },
  "integrity": {
    "sha256_video": "f79d40c4577f66a4fbbde8452b01d91ccf1d62f7efa21d0c784082468f3c15fa",
    "sha256_overlay": "bcc0edb5b229cabd30a91c850742ec1863c9d82d73babf74202073be68c31e5d"
  },
  "hand_object_contact": {
    "frames_sampled": 67,
    "contact_frames": 21,
    "contact_rate_pct": 31.34,
    "hand_object_occlusion_logged": true
  },
  "session": {
    "session_id": "GGN_20260620_S09",
    "capture_date": "2026-06-20",
    "timezone": "Asia/Kolkata",
    "collector_id": "WRK_290669",
    "clips_in_session": 1,
    "indoor_outdoor": "outdoor",
    "lighting": "natural",
    "mount_type": "head_mounted_via_headband_egocentric",
    "task_id": "denting_and_filing",
    "time_reference": "clip_start",
    "utc_available": true,
    "utc_note": "Wall-clock start approximated for robotics fusion (minute resolution, 12:00-17:00 IST window); not embedded in deliverable MP4. Clip-relative timestamps remain authoritative.",
    "utc_precision": "minute_approximate",
    "capture_start_ist_approx": "2026-06-20T15:30:00+05:30",
    "capture_start_utc_approx": "2026-06-20T10:00:00Z"
  },
  "task_id": "denting_and_filing"
}