Re: Hardware acceleration with gstreamer1-vaapi and html5 video

[Gianvito Cavasoli <gianvito gmx it>]

Il giorno mer, 14/12/2016 alle 14.59 +0100, Gianvito Cavasoli ha
scritto:
> Il giorno mar, 13/12/2016 alle 15.15 +0100, Víctor M. Jáquez L. ha
> scritto:
> > Hi,
> >
> > On 12/13/16 at 12:32pm, Gianvito Cavasoli wrote:
> > > Hello,
> > > I'm using Epiphany with gstreamer1-vaapi and radeon driver
> > > (r600).
> >
> > Which version of gstreamer-vaapi?
>
> 1.10.0, included in Fedora 25.
>
> > We have changed a lot gstreamer-vaapi recently in particular when
> > downloading
> > the images from GPU to CPU. I recommend you to use the release
> > 1.10.2. But
> > still there are rough edges.
> >
> > > If I set the environment variable "export
> > > LIBVA_DRIVER_NAME=radeonsi"
> > > Epiphany don't play the html5 video (youtube, etc.),
> >
> > The first question would be why do you have to export this
> > variable?
> > libva
> > should be able to detect the first available driver.
>
> libva chooses radeonsi by default, but with this the html5 videos
> dont'
> start, I've to export vdpau to see the videos.
>
> > The second question is what do you mean with "don't play"? nothing
> > is
> > shown?
> > is shown badly?
>
> The videos load but don't start with a error (ex. on youtube):
>
> https://s30.postimg.org/fgvgsarox/Schermata_da_2016_12_14_12_11_49.pn
> g
>
>
> $ export LIBVA_DRIVER_NAME=radeonsi && epiphany
> Error scanning plugin
> /usr/lib64/mozilla/plugins/libevbrowserplugin.so,
> /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess returned 256 exit
> status
> libva info: VA-API version 0.39.4
> libva info: va_getDriverName() returns 0
> libva info: User requested driver 'radeonsi'
> libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
> libva info: Found init function __vaDriverInit_0_39
> libva info: va_openDriver() returns 0
> libva info: VA-API version 0.39.4
> libva info: va_getDriverName() returns 0
> libva info: User requested driver 'radeonsi'
> libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
> libva info: Found init function __vaDriverInit_0_39
> libva info: va_openDriver() returns 0
> libva info: VA-API version 0.39.4
> libva info: va_getDriverName() returns 0
> libva info: User requested driver 'radeonsi'
> libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
> libva info: Found init function __vaDriverInit_0_39
> libva info: va_openDriver() returns 0
>
> Sometimes, very rarely, the video plays but stutters (also with
> Totem).
>
> With vdpau:
> $ export LIBVA_DRIVER_NAME=vdpau && epiphany
> libva info: VA-API version 0.39.4
> libva info: va_getDriverName() returns 0
> libva info: User requested driver 'vdpau'
> libva info: Trying to open /usr/lib64/dri/vdpau_drv_video.so
> libva info: Found init function __vaDriverInit_0_38
> libva info: va_openDriver() returns 0
> Error scanning plugin
> /usr/lib64/mozilla/plugins/libevbrowserplugin.so,
> /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess returned 256 exit
> status
>
>
> > > but if I use "export LIBVA_DRIVER_NAME=vdpau" the video are
> > > played
> > > normally
> > > but use a lot of CPU camparison to "radeonsi" variable
> >
> > In the release 1.10 we added a whitelist to block, precisely, the
> > vdpau-va
> > bridge backend which is undermaintained, and buggy. So, if you are
> > using this
> > release, the vdpau driver is bailed out and the software decoders
> > are
> > used as
> > fallback.
> >
> > > (I've tested this
> > > with Totem and a movie in full HD). It's a problem of Epiphany,
> > > WebkitGTK or
> > > gstreamer1-vaapi?  Thanks
> >
> > Most probably, gstreamer-vaapi in this case.
> >
> > vmjl
> > _______________________________________________
>
> Thanks :)

A small update: in Wayland session "radeonsi" works well. The issue
remains with Xorg session :)

However, there is a small problem with Wayland, if i dont use the
environment variable "LIBVA_DRIVER_NAME=radeonsi" driver "gallium" is
loaded, but this is an error, with Mesa 13 Gallium has been replaced
with radeonsi.

Maybe i've to report this to gstreamer-vaapi bugzilla?

Regards

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