I’ve just installed Jellyfin and added my first library, type Music, for testing. The directory only has one file in it, an mp3. I went to open it and there was no music there. When I tried to press Play All, it gave me the error PlaybackErrorNoCompatibleStream. I’m running Debian 9.
Did you use a docker?
Do you have your own MP3 on the Data patch you specifed when creating the docker?
Please give the exact line you used when you created the docker and where on your system do you store music - then we can help…
Update - I fixed it by reinstalling Jellyfin and installing ffmpeg, and not changing the language for the library.
And no, I didn’t use docker.