[
  "ffprobe",
  "-v",
  "error",
  "-select_streams",
  "v:0",
  "-show_packets",
  "-show_data_hash",
  "sha256",
  "-show_entries",
  "packet=pts_time,duration_time,flags,data_hash",
  "-of",
  "json",
  "/data/codex-artifacts/contextra/action-model-eval/2026/2026-10-28_contextra-self-filming-original01-review_r01/clean_joined.mp4"
]