Significantly worse h264 VAAPI quality then with ffmpeg, should this be an issue report?

[Quackdoc]

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I'm not sure if this should be an issue report or not, however when using h264 with vaapi, I am getting significantly worse quality with sunshine then I am with ffmpeg.

This is a seperate issue from the QSV one as the issue only occurs with h264 vaapi, swencode as well as vaapi with h265 and hevc have no issue of a massive quality discrepency.

I am using this command (and many variations of it) to try and approximate the settings I found inside the code ffmpeg -init_hw_device vaapi -i /tmp/record.mp4 -r 60 -vf "scale=w=1280:h=720,format=nv12,hwupload" -c:v h264_vaapi -b:v 5M -rc_mode VBR -low_power 1 -profile:v high -quality 7 -idr_interval $IDR -async_depth 1 /tmp/out-vaapi.mp4

I can provide a full recording of the ffmpeg encode if necessary, but here are some screenshots to highlight the difference. Or if there is a more accurate cmdline I can use to replicate I can try that.

This is via moonlight set for 10mbps 60fps on the same PC as the streaming PC.

and this is via the encode

[LizardByte-bot]

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