patch for ffmpeg affects d3d11va/dxva2 hwaccels for AVC

Sample is here (I remuxed it to .mp4):

coow1212l and here is another sample

ffplay.exe -vcodec h264_cuvid hbcwasdecaw.mp4 is not affected, so is -hwaccel nvdec

Edited May 11, 2022 by Valerii Za.

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