https://bugs.freedesktop.org/show_bug.cgi?id=111236
--- Comment #6 from Julien Isorce julien.isorce@gmail.com --- Looks similar to https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/merge_requests/142
It is working fine with mesa 18.3.6 and st/va has not changed in 19.1: https://cgit.freedesktop.org/mesa/mesa/log/src/gallium/state_trackers/va?h=1...
So the issues could be due to the recent changes in drivers/radeon, drivers/radeonsi or winsys/amdgpu, i.e. :
https://cgit.freedesktop.org/mesa/mesa/log/src/gallium/drivers/radeon?h=19.1
https://cgit.freedesktop.org/mesa/mesa/log/src/gallium/drivers/radeonsi?h=19...
https://cgit.freedesktop.org/mesa/mesa/log/src/gallium/winsys/amdgpu?h=19.1