Weird problem with subtitles on 4k movies

[TheDreadPirate]

I don't think you were supposed to reinstall and re-run the subtitle extract plugin.  Re-do the steps, but don't use the subtitle extract plugin.  Let Jellyfin extract it on the fly (make sure that is enabled).

   

It's also possible that this "SRT" subtitle track isn't actually SRT.

Can you find the original video and extract the subtitles?

Code:

ffmpeg -i "D:\path\to\video.mlv" -vn -an -c:s copy -map 0:s:# subtitle.srt

Replace "#" with the subtitle track number.  0 would the first subtitle track.