How to play multiple gstreamer udpsink streams in a Qt app?

[hobbesc7]

Mandeep Sandhu wrote
> Have a look at this doc:
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/qt-gstreamer/html/qtvideosink_overview.html
> 
> From the doc: "When drawing on QWidgets, it is recommended to embed
> the platform's hardware accelerated sink, such as xvimagesink on X11,
> and if this is not possible, use qwidgetvideosink."
> 
> I think the choppy-ness mught be due to software based drawing that is
> happening into the QWidget. I have tried the QtGStreamer player
> example on my PC (Ubuntu 12.10, intel corei7, 8GB RAM, Nvidia GTX
> 460M) and it seems to play local files fine.
> 
> I think the internal video sink being used by "playbin2" _might_ be a
> software based sink like qtvideosink or qwidgetvideosink.
> 
> You can try specifying xvimagesink (if you're on X) to see if fixes
> the choppy-ness problem, though then the problem is that the video
> will be displayed in a separate X window and not inside your QWidget.
> 
> It would've been good if we could precisely place the video output of
> xvimagesink into a QWidget by specifying height/width and most
> importantly - position. I can see that we can set h/w in xvimagesink
> but not the position.

I'm a little confused as to how to embed qtglvideosink in my
QGst::Ui::VideoWidget.

The example in the link you post gives the following code:

 QGst::Element videoSink = QGst::ElementFactory::make("qtglvideosink");
 glwidget->makeCurrent();
 videoSink->setProperty("glcontext", (void*) QGLContext::currentContext());
 glwidget->doneCurrent();

but QGst::Ui::VideoWidget doesn't have a makeCurrent() method.  And do I
still create a pipeline and watch it with
QGst::Ui::VideoWidget->watchPipeline() ?



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