{
  "clip_id": "0012",
  "source_episode": "episode_010",
  "source_camera": "exterior2",
  "source_video": "/mnt/pfs/share/shentingrui/dataset/droid-100/episode_010/exterior2.mp4",
  "start_time_s": 7.0,
  "end_time_s": 19.0,
  "start_frame": 105,
  "end_frame_exclusive": 285,
  "duration_s": 12.0,
  "object_name": "green block",
  "action_label": "pick_and_place",
  "description": "The robot arm moves to a green block on the table, grasps it, lifts it up, and places it on top of a stack of other blocks.",
  "evidence": "The gripper is visible at the adjusted start (hovering over the green block) and end (releasing the block on the stack). Only the green block is manipulated. The action is a complete pick-and-place sequence.",
  "quality": {
    "gripper_visible_start": true,
    "gripper_visible_end": true,
    "motion_smooth": true,
    "single_object_only": true,
    "object_clear": true,
    "meaningful_successful_action": true
  },
  "vlm": {
    "provider": "qwen",
    "verification_confidence": 0.95
  }
}