{
  "prompt_type": "sft_combinatory.event",
  "length_requirement": "first/new-scene segment about 60+ words; later content segments normally 30+ words",
  "video_attachment_path": "/minimax-dialogue/workspace/users/jinnan/data/caption_diverse_v1/runs/full_sourcing_60k_6bucket_20260730_v2/sourcing_demo/vela_gpt56_prompt10_20260804/mp4_attachments_33mb_zero_based_final_20260806/caption_demo_008.mp4",
  "video_attachment_timestamp_mode": "zero_based_clip",
  "video_timestamp_offset_s": 3529.6,
  "video_timestamp_formula": "absolute_frame_ts = frame_ts + video_timestamp_offset_s",
  "source_video_path": "/oss/crawler-data-storage/Youtube-New-QM/video/2026-01-01-17/2dqgKuifWgc.mp4",
  "source_clip_start_s": 3529.6,
  "source_clip_end_s": 3589.1
}