Jellyfin crashing on Fire Stick app

[TheDreadPirate]

Jellyfin should have no problem playing that.

1) Make sure your Firestick OS is fully up-to-date.
2) What are your audio settings in the Jellyfin client? Click on the gear in the top right > Playback, about halfway down will be some audio settings. Is it down mixing? Do you have Dolby/DTS audio passthrough enabled? Does your output device support playing those?
3) We can trying repackaging the files. Sometimes a poorly created MKV file can cause issues with the player.

Code:

/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags genpts -i "/media/library/Media/Movies/The Hobbit An Unexpected Journey (2012).mkv" -map 0:v -map 0:a -map 0:s -map_chapters 0 -c:v copy -c:a copy -c:s copy outputFile.mkv

This command WILL NOT reencode the file. It is just taking the video/audio/subtitle streams and putting them in a new MKV container.