Can't get rtpbin to work AT ALL

[Sebastian Dröge]

On Wed, 2017-07-12 at 15:19 -0400, Stirling Westrup wrote:
> 
> 
> On Wed, Jul 12, 2017 at 1:51 AM, Sebastian Dröge <sebastian at centricular.com> wrote:
> > On Tue, 2017-07-11 at 16:24 -0400, Stirling Westrup wrote:
> > > I'm working on a design for a video system based on rtp. The plan is
> > > to have an rtp server with database of videos. It will support an .an
> > > rtsp connection that one can use to request videos to play, and
> > > clients to play them on.
> > >
> > > All of the chosen clients need to play the exact same video in as
> > > close synchronization as we can manage.
> > >
> > > From my reading it seems like rtpbin should form part of the
> > > solution, but I can't get it to work. So far every single example of
> > > an rtpbin use that I've been able to find, in the documentation, or
> > > in help forums, fails to run. The best that I've been able to achieve
> > > is to simply have two pipelines running, that fail to pass any data
> > > between them.
> > >
> > > Could someone please give me a pair of pipelines I can start with
> > > gst-launch to pass some sort of video data from one pipeline to the
> > > next on the same machine, and using rtpbin?
> > >
> > > Or, if for some reason that isn't possible, could someone explain WHY
> > > its not possible, and what extra functionality is needed?
> > 
> > Did you try the examples at
> >   https://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/tests/examples/rtp
> > 
> > For example client-PCMA.sh and server-alsasrc-PCMA.sh are about
> > the simplest you can do with rtpbin while including RTCP.
> 
> Okay, I just tried that one, and it worked.  
> 
> Today I was trying out gst-rtsp-server/examples/test-netclock and although I could get it to work, test-netclock-client would die (after emitting a large number of warnings) with:
> 
>  (test-netclock-client:9236): GStreamer-CRITICAL **: gst_mini_object_unref: assertion 'mini_object != NULL' failed
> ERROR: from element /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstRTSPSrc:source/GstUDPSrc:udpsrc0: Internal data stream error.
> Additional debug info:
> gstbasesrc.c(2939): gst_base_src_loop (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstRTSPSrc:source/GstUDPSrc:udpsrc0:
> streaming stopped, reason not-negotiated (-4)

Please file a bug about that, thanks!

-- 
Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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