10.9 broke QSV VPP encoding

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Is this every video or one in particular? I'm running both an i7-13700k and an Arc A380 and have ZERO issues with QSV.

The "crucial lines" obfuscate the true cause of the issue, as a full, verbose ffmpeg log would provide more context, mediainfo would provide info on the file as well. This error, seems to happen when there is something incompatible about the ffmpeg command sent or when the file is not compatible with the decoder (e.g., issues with VC-1, Hi10p using QSV decoders). You can check a few things...

* What all is enabled in your HWA codec stack if you use QSV?
* Do you have LPE or prefer native enabled?
* Is VPP tonemapping enabled?
* Could it be related to this bug: https://github.com/jellyfin/jellyfin/issues/11380

Seems like there are kernel issues with the i915 driver. All I saw said that 6.8.4 should be fine, but if the patches applied to the driver were backported, you'd be stuck. You may see if you can run a different kernel on the VM as a test.