Jellyfin, rffmpeg and confusing error messages
Confusing error messages sent me on a debugging spree because of an interesting Jellyifn quirk.
TL;DR: if you have configured an alternative ffmpeg path in Jellyfin, make sure there's an ffprobe binary in the same location with the same file extension. In my case, this was solved by running:
ln -s `which ffprobe` /usr/local/bin/ffprobe.py