Steps to reproduce:
1. Upload the media.zip (of a MH 1.3 CA) via addZippedMediaPackage-REST endpoint
Download link: http://mh-admin.ltcc.tuwien.ac.at/porticus/MH-11833_file/
2. Let it process, this succeeds
3. Edit it, ie. cut it in the middle, and send it to the Publish-Workflow
4. There will be a processing failure, stating something about track.unknown
A processing failure in the prepare-av workflow step.
The processing to complete successfully just like the previous did, but with the cut version.
Workaround (if any):