Thanks for attempting to reproduce! I’ve captured some DEBUG logs from both versions
and notice the following in the plexmediaserver-1.25.0.5220-de6e61df7.x86_64 logs (this is the latest version which doesn’t do hardware accelerated tone mapping on my machine):
Nov 12, 2021 16:37:11.065 [0x7f4bf1392b38] Debug — [Transcode/6scgjkgaazf8tkepou3b61x8] Asked for segment 0 from session.
Nov 12, 2021 16:37:11.103 [0x7f4bf0902b38] Error — [Transcoder] [AVHWDeviceContext @ 0x7f698813eac0] Failed to get number of OpenCL platforms: -1001.
Nov 12, 2021 16:37:11.103 [0x7f4bf0902b38] Error — [Transcoder] [AVHWDeviceContext @ 0x7f698813eac0] Failed to get number of OpenCL platforms: -1001.
Nov 12, 2021 16:37:11.103 [0x7f4bf0902b38] Error — [Transcoder] [Parsed_hwmap_2 @ 0x7f698820b040] Failed to created derived device context: -19.
Nov 12, 2021 16:37:11.103 [0x7f4bf0902b38] Error — [Transcoder] [Parsed_hwmap_2 @ 0x7f698820b040] Failed to configure output pad on Parsed_hwmap_2
Nov 12, 2021 16:37:11.105 [0x7f4bf0902b38] Error — [Transcoder] Error reinitializing filters!
Nov 12, 2021 16:37:11.105 [0x7f4bf0902b38] Error — [Transcoder] Failed to inject frame into filter network: No such device
Nov 12, 2021 16:37:11.105 [0x7f4bf0902b38] Error — [Transcoder] Error while processing the decoded data for stream #0:0
Nov 12, 2021 16:37:11.140 [0x7f4bf2162b38] Debug — Jobs: '/usr/lib/plexmediaserver/Plex Transcoder' exit code for process 1387144 is 1 (failure)
Nov 12, 2021 16:37:11.140 [0x7f4bf0327b38] Debug — Streaming Resource: Changing client to use software decoding
and then
Nov 12, 2021 16:37:12.371 [0x7f4bf0902b38] Debug — [Transcode] Transcoder: session 6scgjkgaazf8tkepou3b61x8 indicated fallback to software decoding
the logs from plexmediaserver-1.22.0.4163-d8c4875dd.x86_64 don’t show this issue and hardware tone mapping works beautifully.
Seems that others have experienced the same with other CPUs: 4K HDR HEVC HW transcoding is broken on i5-11600K (Rocket Lake) - #5 by emb531
I’m happy to provide the full logs but I’m a bit worried that they might contain sensitive info. Is it possible to send those directly to you instead of making them publicly available?
