The final concat-demux + encode step erred with:
[mp4] Could not find tag for codec prores in stream #0,
codec not currently supported in container
[out#0/mp4] Could not write header (incorrect codec parameters ?)
ProRes and DNxHR live in QuickTime (.mov), not MP4. The output path,
S3 key, and asset-row filename were all hardcoded to .mp4.
Pick the container from the codec:
prores / prores_hq / prores_4444 / dnxhr_hq → mov
h264 / h265 / anything else → mp4
outputExt is computed once at the top of the worker (before tmpfile
creation) and reused for the temp output, the S3 key
(jobs/<id>/conformed.<ext>), and the assets row's filename column.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
446a563647