[BUG] Intel QSV transcoding broken in ls211

[x5nder]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When upgrading from ls210 to ls211 on Unraid, hardware transcoding with Intel QSV is no longer working. Plex throws an error. Downgrading to ls210 immediately fixes the issue. Also reported here: https://forums.unraid.net/topic/130080-plex-hardware-transcoding-suddenly-not-working-transcoder-crashing/

Expected Behavior

No response

Steps To Reproduce

Start Plex. Start playing a 4K file. Open video settings, manually select 1080p quality. Up to ls210: file gets transcoded and plays in lower quality. On ls211: Plex throws an error.

Environment

- OS: Unraid 6.12.8
- How docker service was installed: Unraid Community Apps

CPU architecture

x86-64

Docker creation

(default Unraid settings)

Container logs

-

[github-actions]

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[homerr]

Is there nothing being logged by the container at all?

[HannesJo0139]

Edit - It was not related to this one.

[Rolodo]

Same for me some files don't transcode anymore.
I can provide stuff if you let me know what and how to get them.

Thanks

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

[factorywiz]

I have had a very similar issue with two different model Synology NAS units using QSV (one Intel Celeron J3455 and one J4125). Hardware accelerated transcoding works for 1080p source files but not 4K source files. 4K source files go into software transcoding immediately, the CPU maxes out, etc. If I downgrade my container to 1.40.2.8395-c67dce28e-ls218 or below - 4K files will transcode with the (hw) tag again. Only 4K files seem to be affected.

[Elwyr]

I have had a very similar issue with two different model Synology NAS units using QSV (one Intel Celeron J3455 and one J4125). Hardware accelerated transcoding works for 1080p source files but not 4K source files. 4K source files go into software transcoding immediately, the CPU maxes out, etc. If I downgrade my container to 1.40.2.8395-c67dce28e-ls218 or below - 4K files will transcode with the (hw) tag again. Only 4K files seem to be affected.

Same experience here on a Synology 920+, downgrading to ls218 works for now, thanks.

[QuigonJohnn]

I have had a very similar issue with two different model Synology NAS units using QSV (one Intel Celeron J3455 and one J4125). Hardware accelerated transcoding works for 1080p source files but not 4K source files. 4K source files go into software transcoding immediately, the CPU maxes out, etc. If I downgrade my container to 1.40.2.8395-c67dce28e-ls218 or below - 4K files will transcode with the (hw) tag again. Only 4K files seem to be affected.

Same experience here on a Synology 920+, downgrading to ls218 works for now, thanks.

I'm having the same issue with 4K media on the 920+, but downgrading the container doesn't solve the problem for me.

Edit: Setting my 'VERSION' variable to 'docker' does fix the problem after I downgrade the container.
This installs Plex Version 1.40.2.8395, which is not the latest public version. The logs show that it couldn't pull a different version:

Upgrade attempt failed, this could be because either plex update site is down, local network issues, or you were trying to get a version that simply doesn't exist, check over the VERSION variable thoroughly & correct it or try again later

Unfortunately this means I can't use the latest docker image with the older 1.40.2.8395 version of Plex for testing, as I get the same error. I suspect this is a bug with recent versions of Plex itself, as that has happened before.

[factorywiz]

I believe you are correct @QuigonJohnn . After making this comment I found that there was actually mention of a PLEX issue breaking it for certain generations of CPU/iGPU. Here is the link.

https://forums.plex.tv/t/hdr-tone-mapping-not-compatible-with-hw-accelerated-transcoding-anymore-ds920/880627

Multiple mentions of it affecting Apollo Lake and Gemini Lake iGPUs. Appears the container is fine except for the underlying Plex bug.

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.