DH2300 HW Transcoding Jellyfin

I have a DH2300 with Jellyfin setup in Docker, all working fine and on current version (10.11.8). Docker image is the jellyfin/jellyfin standard one.

Does anyone have any config info for the hardware transcoding please ? Alternatively how do I work out which model rockchip I have in the device (I found a jellyfin config page for various models of the rockchip gpu).

I know it has the rockchip to select in jellyfin, but I'm getting variable results when I turn it on. So rather than trial and error I thought I'd ask to see if anyone was able to advise which formats it supported (I can't seem to google it, my failing I guess).

Ie which of the following should I activate

H264 HEVC MPEG1 MPEG2 MPEG4 VP8 VP9 AV1 HEVC 10bit VP9 10bit

And do I

"Allow encoding in HEVC format Allow encoding in AV1 format"

The jellyfin image definitely has ffmpeg installed (the service/daemon uses cpu which shows up in docker)