Rasbperry pi 4 performance issues

[TheDreadPirate]

Yes, Tdarr is a standalone app. No, Jellyfin cannot integrate with it automatically, AFAIK.

The point of pre-transcoding is so that the server doesn't have to do real-time transcoding. Keeping the videos at 1080P ensures client compatibility. Some older devices cannot decode higher resolution files.

If you want to keep 4K versions of your movies, what you could do is create separate libraries. One with your original 4K files for playback on clients you KNOW can direct play them. And then a 1080P library with your pre-transcoded versions.