[
  "ffmpeg",
  "-nostdin",
  "-hide_banner",
  "-loglevel",
  "error",
  "-n",
  "-f",
  "concat",
  "-safe",
  "0",
  "-i",
  "/data/codex-artifacts/contextra/action-model-eval/2026/2026-10-28_contextra-self-filming-original01-review_r01/concat.txt",
  "-map",
  "0:v:0",
  "-an",
  "-c:v",
  "copy",
  "-map_metadata",
  "-1",
  "-video_track_timescale",
  "1000000",
  "/data/codex-artifacts/contextra/action-model-eval/2026/2026-10-28_contextra-self-filming-original01-review_r01/clean_joined.mp4"
]