Okay, I haven’t tried using docker, so I can’t help directly, but I set up my Plex server with help from Jellyfin documentation. You could probably find something in there about setting up hardware acceleration on docker, if you haven’t already. They should work with Plex, as well.
Both are docker containers. It can detect the card, but ffmpeg crashes with an error and that’s as far as I got.
I haven’t given up, life just got busy for a bit as often happens.
Okay, I haven’t tried using docker, so I can’t help directly, but I set up my Plex server with help from Jellyfin documentation. You could probably find something in there about setting up hardware acceleration on docker, if you haven’t already. They should work with Plex, as well.
Oh, HW works on Plex just fine.
Oh wait, I guess I completely misread what you said lol