[hevc_qsv @ 0x11a2180] Error during QSV decoding.: unknown error (-21)

[shiremail 4]

I run emby in a docker on my unRAID server. I have activated hardware transcoding for my iGPU. This works fine with VAAPI. When I also activate QS I get a lot of errors in the log file. Hardware transcoding is then deactivated and software transcoding activated.

 

ffmpeg-transcode-2e398257-4735-4172-a755-570184a7fd27_1.txt hardware_detection-63900745727.txt

Edited December 7, 2025 by shiremail

[shiremail 4]

Kernel issue in unRAID

[Luke 42077]

4 minutes ago, shiremail said:

Kernel issue in unRAID

HI, thanks for following up. How did you determine this?

[shiremail 4]

2 hours ago, Luke said:

HI, thanks for following up. How did you determine this?

Reply to a post in the unRAID support forum.