[Bug 98278] Corrupted videos VA-API HW encoding radeonsi

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98278

--- Comment #2 from Christoph Haag <haagch at frickel.club> ---
I'm just a user, so take this with a grain of salt, but I found that radeon
with vaapi only works with the nv12 color format and produces something broken
like this with i420.

The last time I tried it, vaapipostproc format=nv12 did not work, so I had to
do the color space conversion on the CPU with videoconvert.

Here is a pipeline that last worked for me:

gst-launch-1.0 ximagesrc display-name=:0 use-damage=0 startx=0 starty=0
endx=1919 endy=1079 ! videoconvert ! video/x-raw,framerate=60/1,format=NV12 !
vaapih264enc ! h264parse ! matroskamux ! filesink location=output.avi

Can't really test right now because it hangs my GPU, but I see it saves one
frame that has this vertically doubled image too, with correct colors though.

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