[Cin] Tested vaapi hwaccel presets

[Andrea paz]

> Your gpu has av1 10-bit encoding capability?
> Possibly try to comment out profile=main

You are right; my graphics card (VCN 2.0) is not capable of AV1
hardware encoding at 8-10bit.
I propose to add a note to the presets similar to:

# The GPU must be capable of 8-10bit hardware encoding.


> Try to comment out profile=0  or edit it to profile=2

No; I have the same errors.