I'm having issues with plex hardware transcoding using quick sync (vaapi).
Whenever I try to play in Firefox (which will force transcode) the playback doesn't start and I get an error saying:
"Conversion failed. The transcoder exited due to an error." and I get ERRORs in the logs like:
[..]
Oct 24, 2022 15:14:18.698 [0x14c5111ebb38] ERROR - [Req#22d/Transcode/4ys37jjtozcvkexa7d6uxf2t/e654f665-1c3c-4929-92cb-ab2b49716fa1] [AVHWDeviceContext @ 0x14a076afc680] Failed to initialise VAAPI connection: -1 (unknown libva error).
Oct 24, 2022 15:14:18.698 [0x14c517153b38] ERROR - [Req#22f/Transcode/4ys37jjtozcvkexa7d6uxf2t/e654f665-1c3c-4929-92cb-ab2b49716fa1] Device creation failed: -5.
Oct 24, 2022 15:14:18.698 [0x14c5111ebb38] ERROR - [Req#230/Transcode/4ys37jjtozcvkexa7d6uxf2t/e654f665-1c3c-4929-92cb-ab2b49716fa1] Failed to set value 'vaapi=vaapi:/dev/dri/renderD129' for option 'init_hw_device': I/O error
Oct 24, 2022 15:14:18.699 [0x14c517153b38] ERROR - [Req#231/Transcode/4ys37jjtozcvkexa7d6uxf2t/e654f665-1c3c-4929-92cb-ab2b49716fa1] Error parsing global options: I/O error
[..]
Relevant information below
CPU: Intel Core i7-6700
GPU: The server has also a NVIDIA GPU but it's _not_ used from Plex. It's used from a different docker container.
Versions:
Unraid: 6.11.1
Plex docker: 1.29.1.6316
Plex Transcode settings:
Enable HDR tone mapping OFF
Use hardware acceleration when available ON
Use hardware-accelerated video encoding ON
Docker command:
Appreciate any input / assistance in debugging this.