SOLVED: QSV suddenly stopped working, cant transcode

[Ilajelly]

I had the exact same error when transcoding using QSV after updating from Jellyfin server 1.8.13 to 1.9.1.

Code:

[AVHWDeviceContext @ 000001d3bfdac200] Using device 8086:5917 (Intel(R) UHD Graphics 620).
[AVHWDeviceContext @ 000001d3bfe69840] Error creating a MFX session: -9.
Device creation failed: -1313558101.
Failed to set value 'qsv=qs@dx11' for option 'init_hw_device': Unknown error occurred
Error parsing global options: Unknown error occurred

I am also running Jellyfin Server on a Windows box with an old Intel Pentium G4400 CPU.

The solution for me was to update to the newest Intel HD driver for my system. For me, it is version 31.0.101.2115 for 6th-10th Gen Intel® Core™ Processor Graphics. I found it here on Intel's homepage: https://www.intel.com/content/www/us/en/...ndows.html

It is my guess that Jellyfin might use some functions in the Intel Media SDK that needs a newer driver.

Nice going!

I updated intel driver to 31.0.101.2127 (most recent on intel site) and QSV started working again.
Thanks for the tip!