I’ve been successfully using Jellyfin and Sonarr/Radarr for over 2 years now, and one of those things I find really annoying when it happens is incorrect audio tracks playing or subtitles showing. It happens rarely enough that I forget to do anything about it (until now) but it’s something I’d like to never have to think about again.

I’d ideally like my setup to abide by the following rules

For subtitles:

1. Display English[Forced] subtitles by default if applicable (the kind that show up if characters suddenly start speaking another language as part of the media in question)
2. Otherwise have subtitles off by default
3. Have English subtitles available as an option in case I want them
4. Completey remove all other subtitle options from the media entirely

For audio tracks:

1. English by default if available
2. Otherwise the native language of the media as the default (bonus points if English subtitles can be enabled automatically if this case arrises)
3. The native language of the media available as an option if applicable (even if an English audio track is available)
4. All other audio track options removed from the media entirely.

Does anyone know of any tools or post-processing options I can use to accomplish what I want?