Steps to replicate the issue (include links if applicable):
What happens?:
These files are not properly playable, and fail to be transcoded. However once they fail, their entries in the transcode table are not registered as failing. This causes them to be 'in progress' forever and ever.
What should have happened instead?:
The files should have a proper duration
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):