Re: Hardware acceleration with gstreamer1-vaapi and html5 video

[Gianvito Cavasoli <gianvito gmx it>]

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.png


$ 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 :)

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