(In reply to master.engineer from comment #36) > I have this issue since a long time, good it's worked on. I have an AMD 5700XT which is a Navi card and supports VP9 acceleration i can test your fix. Which build should i use? Not according to AMD technical page: https://www.amd.com/en/products/graphics/amd-radeon-rx-5700-xt Only H264 and H265. AFAIK, only AMD iGPU (used on laptop) have VP9 decoders. AMD used to have some kind of hybrid VP HW accelerator using OpenCL, it was very inefficient and had a few bugs. It got removed in recent drivers.
Bug 1570046 Comment 38 Edit History
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(In reply to master.engineer from comment #36) > I have this issue since a long time, good it's worked on. I have an AMD 5700XT which is a Navi card and supports VP9 acceleration i can test your fix. Which build should i use? Not according to AMD technical page: https://www.amd.com/en/products/graphics/amd-radeon-rx-5700-xt Only H264 and H265. AFAIK, only AMD iGPU (used on laptop) have VP9 decoders. AMD used to have some kind of hybrid VP HW accelerator using OpenCL, it was very inefficient and had a few bugs. It got removed in recent drivers. Edit: confirmed by AMD that all Navi based card can do VP9, though only 24fps for 8K.