Plex sever (docker) not using gpu to transcode, both intel b580 and amd mi50

General Discussions
1

Both gpu has driver installed, they showed up on the dashboard, but it comes to transcode, plex just won’t use them(tested with mutiple movies, transcode from 4k to 1080p).

2

Is this a new install and it stopped working? Or a first install? Did you add the environment variable to your docker of --device=/dev/dri:/dev/dri for Intel/AMD?

3

Are you using the experimental build which includes the updated Intel Media Driver (needed for ARC gpus) ? AMD gpus are not supported at this time.

4

Yes, I do have that

5

No, not using experimental build, i’m using 1.42.2.10156 docker image: linuxserver/plex. I think at some point the amd gpu did worked, not sure tho.

6

The AMD gpu had SDR (not UHD) capability a long time ago in a FFMPEG 4 version of PMS and was also experimental.

I do not know why Engineering didn’t complete the work.

I do know that with the new FFMPEG 6 version,

  • ARC gpus do work with the new ICR and IMD
  • AMD gpus are on the To-Do list (short list)

Currently, the Intrastructure team is moving the backend of how PMS is built to a new platform.

When that move is complete, we’ll be able to build PMS again and, IIRC what Chris said, FFMPEG 6 with BattleMage gpus will be mainstream.

AFAIK, after completing the upgrades to all the FFMPEG drivers (there are quite a few), Chris will be adding the AMD suite of drivers which will finally bring AMD into the foreground ( I THINK that’s the plan but don’t know all the details or if I’m 100% accurate )

1 Like
Support hardware transcoding for Ryzen AI 9 HX 370 w/ Radeon 890M
7

FWIW - I forked the Jeff Lessard plex-vaapi-amdgpu-mod docker mod and hacked together some updates that got the public version of linuxserver/plex to work with my Ubuntu 24-based Framework Desktop (Strix Halo/gfx1151/8060s). YMMV.

8

Does this support tone mapping?

I have an 8845HS with 780M iGPU and HW transcoding works fine in SDR in my current linuxserverIO container, but tone mapping reverts to SW and kills the CPU..

9

Unfortunately no hw tone mapping, and I’ve yet to find working way to do it on the host machine much less with plex. I might spend some time reverse engineering how jellyfin accomplishes it but I suspect Plex will have to do work on their end. This basically just updates the drivers for modern GPUs.

10

Folks,
The Arc support / drivers are not yet in the package.

They were included in an experimental build (now expired / withdrawn)

Chris will be releasing builds shortly again now the build system has been
rehosted to a new platform.