{
  "clip_id": "0031",
  "source_episode": "episode_025",
  "source_camera": "exterior2",
  "source_video": "/mnt/pfs/share/shentingrui/dataset/droid-100/episode_025/exterior2.mp4",
  "start_time_s": 0.0,
  "end_time_s": 8.0,
  "start_frame": 0,
  "end_frame_exclusive": 120,
  "duration_s": 8.0,
  "object_name": "blue block",
  "action_label": "pick_and_place",
  "description": "The robot grasps the blue block from the top of a stack of colored cubes, lifts it up into the air, and then carefully places it back onto the top of the stack.",
  "evidence": "The robot clearly interacts with only the blue block, performing a full lift and place cycle without disturbing the underlying blocks significantly.",
  "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
  }
}