https://bugs.freedesktop.org/show_bug.cgi?id=97504
--- Comment #4 from Luke A. Guest laguest@archeia.com --- (In reply to Shawn Starr from comment #3)
Revert this patch to fix VDPAU corruption:
"radeonsi: increase performance for DRI PRIME offloading if 2nd GPU is CIK or VI" 5ee3cac1380fec6971e9d25267589a586da0ecd8.
I reverted this, rebuilt mesa, ran the ffmpeg command, played it back, the first 4 seconds is corrupt in the same way as before, then it's fine.
Rebuilt obs-studio, the window now shows an uncorrupted screen! REbuilt ffmpeg and no corruption.