VAAPI doesn't work with Intel UHD P630; libplacebo dmabuf_interop doesn't initialize
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os:linux
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Description
system information
- mpv version 0.35.1
- xorg 21.1.7
- mesa 22.2.5
- libva 2.16.0
- intel-media-driver 22.5.4
- libplacebo 5.229.2
Running on Gentoo, all these built from ebuilds
GPU: Intel UHD Graphics P630 (integrated Xeon E-2226G)
I also have an NVIDIA Tesla installed in this machine, so MPV finds a cuvid/nvdec hardware device, and the nvdec-copy hardware decoder works fine. But VAAPI should too. The Intel GPU supports it, and I would prefer not to have to copy the video frames between GPUs.
debugging output
$ mpv --frames=0 --ao=null --msg-level=all=status,cplayer=v,vd=trace,vo=v --hwdec=vaapi /tmp/video.mp4
[cplayer] Command line options: '--frames=0' '--ao=null' '--msg-level=all=status,cplayer=v,vd=trace,vo=v' '--hwdec=vaapi' '/tmp/video.mp4'
[cplayer] mpv 0.35.1 Copyright © 2000-2023 mpv/MPlayer/mplayer2 projects
[cplayer] built on UNKNOWN
[cplayer] FFmpeg library versions:
[cplayer] libavutil 56.70.100
[cplayer] libavcodec 58.134.100
[cplayer] libavformat 58.76.100
[cplayer] libswscale 5.9.100
[cplayer] libavfilter 7.110.100
[cplayer] libswresample 3.9.100
[cplayer] FFmpeg version: 4.4.3
[cplayer]
[cplayer] Configuration: meson configure build -Dprefix=/usr -Dbuildtype=plain -Doptimization=plain
[cplayer] List of enabled features: alsa cdda cplayer cplugins dmabuf-interop-pl dvdnav egl egl-helpers egl-x11 ffmpeg ffnvcodec gl glibc-thread-name glob glob-posix gpl html-build iconv jpeg lcms2 libass libavdevice libdl libm libmpv-shared libplacebo libplacebo-next librt linux-fstatfs manpage-build noexecstack plain-gl posix rubberband rubberband-3 shaderc stdatomic threads uchardet vaapi vaapi-egl vaapi-libplacebo vaapi-x-egl vaapi-x11 vector vt.h vulkan x11 zlib
[cplayer] Built with NDEBUG.
[cplayer] Reading config file /etc/mpv/encoding-profiles.conf
[cplayer] Applying profile 'default'...
[cplayer] Reading config file /etc/mpv/mpv.conf
[cplayer] Applying profile 'default'...
[cplayer] Setting option 'msg-level' = 'all=fatal,cplayer=status,statusline=status,display-tags=status' (flags = 4)
[cplayer] Setting option 'hwdec' = 'vaapi' (flags = 4)
[cplayer] Setting option 'profile' = 'gpu-hq' (flags = 4)
[cplayer] Applying profile 'gpu-hq'...
[cplayer] Setting option 'scale' = 'spline36' (flags = 4)
[cplayer] Setting option 'cscale' = 'spline36' (flags = 4)
[cplayer] Setting option 'dscale' = 'mitchell' (flags = 4)
[cplayer] Setting option 'dither-depth' = 'auto' (flags = 4)
[cplayer] Setting option 'correct-downscaling' = 'yes' (flags = 4)
[cplayer] Setting option 'linear-downscaling' = 'yes' (flags = 4)
[cplayer] Setting option 'sigmoid-upscaling' = 'yes' (flags = 4)
[cplayer] Setting option 'deband' = 'yes' (flags = 4)
[cplayer] Setting option 'audio-display' = 'no' (flags = 4)
[cplayer] Setting option 'sub-color' = '1.0/1.0/0.95/0.8' (flags = 4)
[cplayer] Reading config file /home/stharward/.config/mpv/mpv.conf
[cplayer] Applying profile 'default'...
[cplayer] Setting option 'replaygain' = 'album' (flags = 4)
[cplayer] Setting option 'osd-font' = 'Droid Sans' (flags = 4)
[cplayer] Setting option 'osd-font-size' = '24' (flags = 4)
[cplayer] Setting option 'sub-font' = 'Franklin Gothic Medium' (flags = 4)
[cplayer] Setting option 'sub-font-size' = '36' (flags = 4)
[cplayer] Setting option 'sub-ass-override' = 'scale' (flags = 4)
[cplayer] Setting option 'af' = 'pan="stereo|FL < FC+0.7*FL+0.3*BL|FR < FC+0.7*FR+0.3*BR"' (flags = 4)
[cplayer] Setting option 'frames' = '0' (flags = 8)
[cplayer] Setting option 'ao' = 'null' (flags = 8)
[cplayer] Setting option 'msg-level' = 'all=status,cplayer=v,vd=trace,vo=v' (flags = 8)
[cplayer] Setting option 'hwdec' = 'vaapi' (flags = 8)
Auto-loading profile 'extension.mp4'
[cplayer] Applying profile 'extension.mp4'...
[cplayer] Setting option 'volume' = '98' (flags = 52)
[cplayer] Opening done: /tmp/video.mp4
(+) Video --vid=1 (*) (h264 1280x544 23.976fps)
(+) Audio --aid=1 (*) (aac 2ch 48000Hz)
[vo/gpu] Probing for best GPU context.
[vo/gpu/opengl] Initializing GPU context 'x11egl'
[vo/gpu/x11] X11 opening display: :0
[vo/gpu/x11] Assuming DPI scale 2 for prescaling. This can be disabled with --hidpi-window-scale=no.
[vo/gpu/x11] Display 0 (DP-2): [0, 0, 3840, 2160] @ 59.996625 FPS
[vo/gpu/x11] Display 1 (DP-3): [3840, 0, 7680, 2160] @ 59.996625 FPS
[vo/gpu/x11] Current display FPS: 59.996625
[vo/gpu/opengl] EGL_VERSION=1.5
[vo/gpu/opengl] EGL_VENDOR=Mesa Project
[vo/gpu/opengl] EGL_CLIENT_APIS=OpenGL OpenGL_ES
[vo/gpu/opengl] Trying to create Desktop OpenGL context.
[vo/gpu/opengl] Choosing visual EGL config 0x15, visual ID 0x21
[vo/gpu/x11] The XPresent extension was found.
[vo/gpu/x11] XPresent disabled.
[vo/gpu/opengl] GL_VERSION='4.6 (Core Profile) Mesa 22.2.5'
[vo/gpu/opengl] Detected desktop OpenGL 4.6.
[vo/gpu/opengl] GL_VENDOR='Intel'
[vo/gpu/opengl] GL_RENDERER='Mesa Intel(R) UHD Graphics P630 (CFL GT2)'
[vo/gpu/opengl] GL_SHADING_LANGUAGE_VERSION='4.60'
[vo/gpu/opengl] Loaded extension GL_KHR_debug.
[vo/gpu] Testing FBO format rgba16f
[vo/gpu] Using FBO format rgba16f.
[vo/gpu] Assuming 59.996625 FPS for display sync.
[vd] Container reported FPS: 23.976024
[vd] Codec list:
[vd] h264 - H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
[vd] h264_v4l2m2m (h264) - V4L2 mem2mem H.264 decoder wrapper
[vd] h264_cuvid (h264) - Nvidia CUVID H264 decoder
[vd] Opening decoder h264
[vd] Looking at hwdec h264-vaapi...
[vo/gpu] Loading hwdec drivers for format: 'vaapi'
[vo/gpu] Loading hwdec driver 'vaapi'
[vo/gpu/vaapi] VAAPI hwdec only works with OpenGL or Vulkan backends.
[vo/gpu] Loading failed.
[vd] Could not create device.
[vd] No hardware decoding available for this codec.
[vd] Using software decoding.
[vd] Detected 6 logical cores.
[vd] Requesting 7 threads for decoding.
[vd] Selected codec: h264 (H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10)
[cplayer] Starting playback...
[vd] Uninit decoder.
[cplayer] finished playback, success (reason 2)
Exiting... (End of file)
$ vainfo
Trying display: x11
libva info: VA-API version 1.16.0
libva info: Trying to open /usr/lib64/va/drivers/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_16
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.16 (libva 2.16.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 22.5.4 ()
vainfo: Supported profile and entrypoints
VAProfileNone : VAEntrypointVideoProc
VAProfileNone : VAEntrypointStats
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Simple : VAEntrypointEncSlice
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointFEI
VAProfileH264Main : VAEntrypointEncSliceLP
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointFEI
VAProfileH264High : VAEntrypointEncSliceLP
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264ConstrainedBaseline: VAEntrypointFEI
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
VAProfileVP8Version0_3 : VAEntrypointVLD
VAProfileVP8Version0_3 : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointFEI
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointEncSlice
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileVP9Profile2 : VAEntrypointVLD
So VAAPI is working, but mpv doesn't recognize it. dmabuf_interop_pl_init returns false at dmabuf_interop_pl.c:123. I've tried rebuilding mpv without libplacebo, and with/without vulkan, and the VAAPI-backend connection always fails. It never even tries to fall back to EGL.
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the command with --hwdec=vaapi and inspect the VAAPI hwdec loading path, especially where libplacebo dmabuf interop initialization is attempted. Trace the OpenGL/VAAPI setup on the Intel UHD P630; done means VAAPI initializes successfully and hardware decoding is used instead of software decoding.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- backend, desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100