Thanks, I have discovered that my PC needs for VLC to use hardware decoding when playing 4K HEVC streams, but that VLC won't support VA-API again until VLC 4 is released.
As an aside, one of these 4K HEVC streams correctly uses VDPAU if I use: $ mpv --vo=gpu --hwdec=vdpau --hwdec-image-format=yuv420p but uses software decoding if I remove the '--hwdec-image-format=yuv420p' parameter because: [vd] Opening decoder hevc [vd] Looking at hwdec hevc-vdpau... [vd] Trying hardware decoding via hevc-vdpau. [vd] Selected codec: hevc (HEVC (High Efficiency Video Coding)) [vd] Pixel formats supported by decoder: vaapi vdpau cuda yuv420p10le [vd] Codec profile: Main 10 (0x2) [ffmpeg] AVHWFramesContext: Unsupported sw format: yuv420p10le Failed to allocate hw frames. [vd] Requesting pixfmt 'yuv420p10le' from decoder. [vd] Attempting next decoding method after failure of hevc-vdpau. [vd] Skipping previously attempted hwdec: hevc-vdpau [vd] Using software decoding. Does this look like another Mesa / VDPAU bug (i.e. should I raise a new issue for it?), or is it actually a problem with mpv? Cheers, Chris On Thu, 15 Feb 2024 at 16:01, Liu, Leo <leo....@amd.com> wrote: > > [AMD Official Use Only - General] > > This is being looked. > > > -----Original Message----- > > From: mesa-dev <mesa-dev-boun...@lists.freedesktop.org> On Behalf Of > > Chris Rankin > > Sent: Thursday, February 15, 2024 10:38 AM > > To: mesa-dev@lists.freedesktop.org > > Subject: [BUG][AMD][VDPAU] RX6600 GPU locks up when decoding HEVC > > > > I have discovered that my RX6600 cannot use VDPAU to decode HEVC, although > > VA-API works OK. Unfortunately, VLC 3.x only supports VDPAU these days for > > hardware decoding. > > > > I have raised this issue: > > https://gitlab.freedesktop.org/mesa/mesa/-/issues/10599 > > > > Mesa 23.3.5 just used to fail, but both Mesa 24.0.1 and 24.1.0-devel > > actually > > lock up the GPU and force me to reboot my PC. > > > > According to vdpauinfo: > > > > name level macbs width height > > ---------------------------------------------------- > > ... > > HEVC_MAIN 186 139264 8192 4352 > > HEVC_MAIN_10 186 139264 8192 4352 > > HEVC_MAIN_STILL --- not supported --- > > HEVC_MAIN_12 --- not supported --- > > HEVC_MAIN_444 --- not supported --- > > HEVC_MAIN_444_10 --- not supported --- > > HEVC_MAIN_444_12 --- not supported --- > > ... > > > > Cheers, > > Chris
