First it is very helpful if you mention the version of gstreamer and the OS that you are using. Second, you have rtpbin.send_rtp_sink_0 twice in the first part of the pipeline. Is that intentional? It can't be good. Third, from my experience, *EVERY* time that you get an error about a link without a source it is because of branching some how and using improper syntax. I also wonder if your pipeline would work better if you specified caps? Good luck. Please post more. <div class="gmail_quote">On Sat, Feb 16, 2013 at 1:11 PM, jhall1468 <<a href="mailto:jhall1468@gmail.com" target="_blank">jhall1468@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I'm attempting to stream an mpeg-ts file source with mp2 video and ac3 audio. My goal, demux the ts container and stream the mpeg2 video and ac3 audio on separate udp ports. Here's my current pipeline: gst-launch -v gstrtpbin name=rtpbin filesrc location=video.mpg ! mpegtsdemux name=demux \ demux. ! queue ! rtpmp2tpay ! rtpbin.send_rtp_sink_0 \ rtpbin.send_rtp_src_0 ! udpsink port=5000 ts-offset=0 \ rtpbin.send_rtcp_src_0 ! udpsink port=5001 sync=false async=false udpsrc port=5003 ! \ rtpbin.recv_rtcp_sink_0 \ demux. ! queue ! rtpac3pay ! rtpbin.send_rtp_sink_1 \ rtpbin.send_rtp_src_1 ! udpsink port=5004 ! \ rtpbin.send_rtcp_src_1 ! udpsink port=5005 sync=false async=false udpsrc port=5006 ! \ rtpbin.recv_rtcp_sink_1 I get an error about a link without a source element (which appears to be stemming from my second demux. not getting the source from the mpegtsdemux). However, even if I pull out the audio and do the video only, it will launch, however VLC can't play it. gst-inspect is complaining about rtpbin.recv_rtcp_sink not existing (_1 if I run both audio and video, _0 if I only run video). I'm guessing there's some major issue with my pipeline, but I've spent a couple of days on this without success. I'm relatively new to gstreamer so that could be the issue. Any suggestions? -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/RTP-streaming-from-an-TS-MPEG2-AC3-file-source-tp4658567.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/RTP-streaming-from-an-TS-MPEG2-AC3-file-source-tp4658567.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>