SOLVED: Playback error on 10-bit h264

[TheDreadPirate]

That is a good idea. You can use ffmpeg to repackage the file without re-encoding.

Code:

/usr/lib/jellyfin-ffmpeg/ffmpeg -i "/path/to/video.mkv" -map 0:v -map 0:a -map 0:s -map_chapters 0 -c:v copy -c:a copy -c:s copy outputFile.mp4