Playback of a video stream is slow under GTK

[pisymbol .]

On Wed, Jul 31, 2019 at 8:09 AM Nicolas Dufresne <nicolas at ndufresne.ca>
wrote:

> Le mardi 30 juillet 2019 à 09:45 -0400, pisymbol . a écrit :
> >
> >
> > On Mon, Jul 29, 2019 at 8:00 PM Nicolas Dufresne <nicolas at ndufresne.ca>
> wrote:
> > >
> > > Le lun. 29 juill. 2019 19 h 56, pisymbol . <pisymbol at gmail.com> a
> écrit :
> > > >
> > > > On Mon, Jul 29, 2019 at 5:51 PM Mathieu Duponchelle <
> mathieu at centricular.com> wrote:
> > > > > I've never seen that, but a test case would probably be helpful :)
> > > > >
> > > >
> > > > Not sure what exactly to share:
> > > >
> > > > Here is the gist of the code:
> > > >
> > > > class GstPlayerWdiget(Gtk.Box):
> > > > ....
> > > >        self.play_pipeline = Gst.Pipeline()
> > > >        factory = self.play_pipeline.get_factory()
> > > >        gtksink = Gst.ElementFactory.make('gtksink', None)
> > > >        gtksink.set_property("sync", False)
> > >
> > > By disabling the sync, you ask GStreamer to play all frames, even when
> real-time isn't possible due to cpu limitation. So slow motion on this
> entirely software pipeline is what you have asked GStreamer.
> > >
> > > If you have multiple cores, consider configuring videoconvert to use
> more then one thread, or add queues at well chosen places (e.g. between
> decoder and converter).
> > >
> >
> > Nicholas, pardon my ignorance, but how does configuring videoconvert use
> more than one thread?
>
> There is a property called n-threads, 0 mean as many as there is CPU,
> and then any other value will try and use that specific amount of
> threads. In python that would be:
>
>   converter.props.n_threads = N
> or
>   converter.set_property("n-threads", N)
>

Is this on newer releases? I ask because now I see it in the online doc but
not using `gst-inspect-1.0 videoconvert` as an element property?

-aps
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20190731/eb70d207/attachment.html>