I looked at what sort of data was being pushed about. I got an mpv/vaapi setup running and tested some videos on that setup just to get comfortable. Radeonsi has a gallium vaapi driver, that talks to firmware driver encoder on the hardware, surely copying what it is programming can't be that hard. I've been loosely following the Vulkan video group inside of Khronos, but I can't say I've understood it or been useful. I'm pretty vague on video processing hardware, I really have no understanding of H264 or any of the standards. This made me question my skills in this area. A few weeks ago I watched Victor's excellent talk on Vulkan Video.
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