Video with no audio is rejected for having none. A file with a video track is accepted and marked had_video; every state of its page (queued, transcribing, done, failed) says only its audio was used and the video was discarded, and a plain audio file shows no such notice. Red: the had_video column does not exist. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>