HW Transcoding stopped working

Plex Media Server
1

I have installed my plex media server (1.32.5.7516) on an ubuntu 23.04 vm. I’m using unraid as a host.
I’ve got hw transcoding working fine including HDR tonemapping with my intel arc a750.

Everytime I make an update higher than 1.32.5.7516 hw transcoding stopps working when HDR Tonemapping is enabled.
I see on every changelog that hw transcoding was fixed for ubuntu machines, but apparently there is still an issue?

I’m trying every new version but have to downgrade everytime. It is getting a bit frustrating.

Server Version#: > 1.32.5.7516
Player Version#: 4.121.1

2

Bump? Does really noone have this issue?

3

We do have some issues with the unraid kernel and Plex versions and how these interact with the different CPUs / GPUs.

If you don’t mind sitting still while we get through it, It would be most stable for you.

We are currently testing 1.40.2 which has a lot of the corrections included.
(First order of business are the windows machines)

4

Just checked again with 1.40.2.8312 and HDR tone mapping is still not working on following specs:

Unraid 6.12.4 with kernel 6.1.49
Intel i5-12400
Intel Arc A750
Ubuntu 23.04 VM

I know you said that windows machines have higher prio but is there any roadmap or any new ETA on when this issue will be fixed. We have some issues where some clients seem to crash the whole PMS sometimes. I cant reproduce it until now, but I would prefer updating but without HDR tonemapping I can’t.

Rolling back to 1.32.5.7516 again

5

@Kyreus

I know there isn’t any official support for ARC or DG1 cards at this time.
This is very much, unfortunately, the same as AMD cards are without tonemapping.

We are working on the transcoder right now.

There is a lot of updating being done.

I can’t give you an ETA because most of the updates/upgrades are falling into “new development / discovery” style work.

Just as we figure one thing out we break another so we rework it and iterate on a solution. Then, as we add the next thing – guess what – :rofl: All over again.

We are getting there.
You and all will really like the end product because nobody else can do what we’re working on. :slight_smile:

6

Were they never officially supported? Was it just luck that it worked?

Now you are teasing :roll_eyes:

7

  1. AMD - We had the initial developmental support for AMD SDR HW transcoding.

  2. From that work, IF the ARC drivers were installed correctly by the user, the ARC GPU would HW transcode SDR (We did not do anything for it). They worked only because everything was using the VAAPI interface.

  3. We then had a staffing change which temporarily halted that development work.

  4. We have now resumed the work and, as part of that work, included items which have always been weaknesses when transcoding.

  5. I cannot spell out the features here (It’s considered "new feature development) until we have them working on all platforms and announce/Forum Preview.
    I CAN tell you:
    – Transcoder is getting a serious upgrade
    – Drivers are getting major updates
    – PMS is getting enhanced to use the new Transcoder + Driver combo
    – As these stabilize, the player apps will also upgrade to add the new capabilities.

I don’t have any target dates I can share because I don’t have any insight into what the player teams need to do / their schedules.

If you want to sit at 1.32.5 for now and use what does work for you – great.
It’s better you’re stable and operating

If I were to guess ??? I half-expect to have an Engineering build for one of the player platforms in a week or so. ( I will know more after the holiday and folks are back in the office)

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