[gst-devel] rtp transmit occur an error of gstreamer

[Wim Taymans]

On Mon, 2010-11-08 at 22:25 -0800, guodecn wrote:
> I have some troubles of rtp transmit of gstreamer. I test the rtp transmit,
> server and client are all in local host, so my example as below:
> server:
> gst-launch-0.10 -v videotestsrc ! x264enc ! rtph264pay ! udpsink
> host=127.0.0.1 port=40000 sync=false
> 
> client:
> gst-launch-0.10 -v udpsrc caps="
> application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H264,payload=(int)96,ssrc=(uint)237526004,clock-base=(uint)1584170994,seqnum-base=(uint)42626"
> port=40000 ! rtph264depay ! decodebin ! xvimagesink
> 
Put ffmpegcolorspace ! videoscale between decodebin and xvimagesink

Wim

> the client caps is copied from the server's udpsrc caps. But still occur an
> error, error message as below:
> 
> ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: Internal data
> flow error.
> Additional debug info:
> gstbasesrc.c(2550): gst_base_src_loop ():
> /GstPipeline:pipeline0/GstUDPSrc:udpsrc0:
> streaming task paused, reason not-negotiated (-4)
> Execution ended after 623154883 ns.
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> 
> I have test the rtp example in the tree of
> gst-plugin-good/tests/example/rtp, occur the same error. I also have read
> the document:
> http://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/gst/rtp/README#n251,
> and follow it , still occur the same error. Who can help me? Thanks very
> much.