Black bar on right side of video when using av1_vaapi

[Cody]

When encoding av1 video using av1_vaapi, there is a bar on the right side of the resulting video.

ffmpeg -init_hw_device vaapi=foo:/dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device foo -i testinputfile -filter_hw_device foo -vf 'format=nv12|vaapi,hwupload' -compression_level 0 -c:v av1_vaapi -b:v 1M -c:a libvorbis -q:a 8 -map 0:v -map 0:a -map 0:s -c:s copy test1.mkv

ffmpeg version n6.1.1

While this appears to be related to this issue here, this patch only seems to affect hevc_vaapi. It did not seem to have any effect on av1_vaapi.

[nyanmisaka]

It's more like a limitation caused by the AMD VCN4 hardware and will be fixed in the next gen.

​https://gitlab.freedesktop.org/mesa/mesa/-/issues/9185

[Cody]

Well, that is unfortunate. I suppose I'll look into using a cpu based encoder.

I'll close this ticket, as there is nothing that can be done.

Thanks for the information! I can stop troubleshooting it now.