Although I cannot complain too much since it is open source, I have to say, my experience with Jellyfin is very painful. After fiddling with it for more than 10 hours, I still cannot get .ass subtitles to work on my Android Jellyfin client. :(
(My NAS isn't strong enough to burn subtitles in real time. Even it does, I just cannot get the fonts to work. All CJK characters are displayed as squares.)
That's interesting. Jellyfin forked from Emby when the developers went closed source, so I'd be interested to learn what the Emby side has fixed that Jellyfin still lacks.
I switched from Emby to Jellyfin and I found them to be generally equally stable.
(My NAS isn't strong enough to burn subtitles in real time. Even it does, I just cannot get the fonts to work. All CJK characters are displayed as squares.)