I used to run Plex on a 3b+ and it couldn’t handle transcoding at a reasonable quality - jellyfin would presumably be fine as long as whatever device you are streaming from can handle your native file format (my library was x265, so I had to use the Plex desktop app because Firefox doesn’t support x265 and required transcoding)
And what about installing this plus Jellyfin or something similar?
I used to run Plex on a 3b+ and it couldn’t handle transcoding at a reasonable quality - jellyfin would presumably be fine as long as whatever device you are streaming from can handle your native file format (my library was x265, so I had to use the Plex desktop app because Firefox doesn’t support x265 and required transcoding)
Probably not. 3Bs are pretty old.