Anyone done this? Got a set of repeatable instructions? My understanding is that the root docker image needs to switch from alpine to ubuntu and that hasn't happened yet.
I don't have exact instructions off the top of my head but you need to install the nvidia container runtime and set the container's runtime to nvidia. I can't think of a reason why radarr would need nvenc though; jellyfin, plex or tdarr sure.
For conversion of videos after download. I don't use tdarr. Doing what you suggest works for Sonarr, but not radar because of different base images. Two different groups maintaining those projects I guess.
Edit: this is the issue I'm speaking about in particular: