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tomaso

Member

Registered: 2017-06-10

Posts: 5

[SOLVED] Hardware decoding in mpv failing

I'm having problems enabling hardware decoding in mpv. I want to use va-api as the decoder. When trying to play a video I get the following error

mpv: intel_driver.c:112: intel_driver_init: Assertion `VA_CHECK_DRM_AUTH_TYPE(ctx, VA_DRM_AUTH_DRI1) || VA_CHECK_DRM_AUTH_TYPE(ctx, VA_DRM_AUTH_DRI2) || VA_CHECK_DRM_AUTH_TYPE(ctx, VA_DRM_AUTH_CUSTOM)' failed.
Aborted (core dumped)

and

libva info: va_getDriverName() returns -1

Output of vainfo:

libva info: VA-API version 0.40.0
libva info: va_getDriverName() returns 0
libva info: User requested driver 'i965'
libva info: Trying to open /usr/lib/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_40
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.40 (libva )
vainfo: Driver version: Intel i965 driver for Intel(R) Kabylake - 1.8.2
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            :    VAEntrypointVLD
      VAProfileMPEG2Simple            :    VAEntrypointEncSlice
      VAProfileMPEG2Main              :    VAEntrypointVLD
      VAProfileMPEG2Main              :    VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline:    VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:    VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline:    VAEntrypointEncSliceLP
      VAProfileH264Main               :    VAEntrypointVLD
      VAProfileH264Main               :    VAEntrypointEncSlice
      VAProfileH264Main               :    VAEntrypointEncSliceLP
      VAProfileH264High               :    VAEntrypointVLD
      VAProfileH264High               :    VAEntrypointEncSlice
      VAProfileH264High               :    VAEntrypointEncSliceLP
      VAProfileH264MultiviewHigh      :    VAEntrypointVLD
      VAProfileH264MultiviewHigh      :    VAEntrypointEncSlice
      VAProfileH264StereoHigh         :    VAEntrypointVLD
      VAProfileH264StereoHigh         :    VAEntrypointEncSlice
      VAProfileVC1Simple              :    VAEntrypointVLD
      VAProfileVC1Main                :    VAEntrypointVLD
      VAProfileVC1Advanced            :    VAEntrypointVLD
      VAProfileNone                   :    VAEntrypointVideoProc
      VAProfileJPEGBaseline           :    VAEntrypointVLD
      VAProfileJPEGBaseline           :    VAEntrypointEncPicture
      VAProfileVP8Version0_3          :    VAEntrypointVLD
      VAProfileVP8Version0_3          :    VAEntrypointEncSlice
      VAProfileHEVCMain               :    VAEntrypointVLD
      VAProfileHEVCMain               :    VAEntrypointEncSlice
      VAProfileHEVCMain10             :    VAEntrypointVLD
      VAProfileHEVCMain10             :    VAEntrypointEncSlice
      VAProfileVP9Profile0            :    VAEntrypointVLD
      VAProfileVP9Profile0            :    VAEntrypointEncSlice
      VAProfileVP9Profile2            :    VAEntrypointVLD

I've set the environment variables

LIBVA_DRIVER_NAME=i965
VDPAU_DRIVER=va_gl

My machine is the late 2016 dell xps 13 with i5 kaby lake.

Last edited by tomaso (2017-06-11 09:34:47)

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: [SOLVED] Hardware decoding in mpv failing

Post your mpv.conf

tomaso

Member

Registered: 2017-06-10

Posts: 5

Re: [SOLVED] Hardware decoding in mpv failing

mpv configuration file:

profile=opengl-hq
hwdec=vaapi

I have the same problem also with vlc. So probably not mpv specific.

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: [SOLVED] Hardware decoding in mpv failing

Try getting rid of both the variables.

tomaso

Member

Registered: 2017-06-10

Posts: 5

Re: [SOLVED] Hardware decoding in mpv failing

Then I get

[vaapi] libva: va_getDriverName() failed with unknown libva error,driver_name=(null)
VO does not support requested hardware decoder, or loading it failed.

but vainfo still works

libva info: VA-API version 0.40.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_40
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.40 (libva )
vainfo: Driver version: Intel i965 driver for Intel(R) Kabylake - 1.8.2
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            :    VAEntrypointVLD
      VAProfileMPEG2Simple            :    VAEntrypointEncSlice
      VAProfileMPEG2Main              :    VAEntrypointVLD
      VAProfileMPEG2Main              :    VAEntrypointEncSlice

tomaso

Member

Registered: 2017-06-10

Posts: 5

Re: [SOLVED] Hardware decoding in mpv failing

Seems to be an issue with wayland, under X everything works fine.

Gusar

Member

Registered: 2009-08-25

Posts: 3,605

Re: [SOLVED] Hardware decoding in mpv failing

mpv --opengl-backend=wayland

The above should do the trick. You now need to explicitly request the wayland backend, otherwise xwayland will be used and hardware decoding doesn't work with that.

tomaso

Member

Registered: 2017-06-10

Posts: 5

Re: [SOLVED] Hardware decoding in mpv failing

Just figured it out as well. Works perfectly now. Thanks!

mrlamud

Member

Registered: 2014-09-27

Posts: 104

Re: [SOLVED] Hardware decoding in mpv failing

"hwdec=vaapi-copy"  works for me in Wayland , hardware-decoding is also working.

Gusar

Member

Registered: 2009-08-25

Posts: 3,605

Re: [SOLVED] Hardware decoding in mpv failing

"hwdec=vaapi-copy"  works for me in Wayland

Yeah, but this copies decoded frames back to system memory, only to then send them again to the GPU for display. Unless you have a *very* good reason why you need copy-back, the copying is just needless waste of resources.