I get:<div>(lt-test-launch:21084): GStreamer-CRITICAL **: gst_poll_set_flushing: assertion `set != NULL' failed </div><div>Morris</div><div> <div class="gmail_quote">On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio <<a href="mailto:gibrovacco@gmail.com">gibrovacco@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi, <div class="im"> On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford <<a href="mailto:morrishford@gmail.com">morrishford@gmail.com</a>> wrote: > Thanks a lot for your help. That was the key to getting it to run. I now > have a working rtsp-server pipe thus: > ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp, > media=\(string\)video, clock-rate=\(int\)90000, > encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661, > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay > ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay > name=pay0 pt=96 sync=false )" > Problem now is that there is a 3 - 4 second latency when playing using that > pipeline and playing the resulting video through vlc or quicktime. > My question: How do I find what is causing the delay and what can I do to > reduce the delay? </div>what if you don't explicitly set clock-base and seqnum-base? Regards <div><div></div><div class="h5"> > Thanks > Morris > > On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <<a href="mailto:gibrovacco@gmail.com">gibrovacco@gmail.com</a>> > wrote: >> >> Hi, >> >> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <<a href="mailto:morrishford@gmail.com">morrishford@gmail.com</a>> >> wrote: >> > I am working on receiving an udpsrc stream and publishing it as an rtsp >> > stream. This gst-launch string works just fine to receive the stream: >> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp, >> > media=\(string\)video, clock-rate=\(int\)90000, >> > encoding-name=\(string\)H264, payload=\(int\)96, >> > ssrc=\(guint\)2396357661, >> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! >> > rtph264depay ! >> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false >> > but when I try to take that pipeline and put it into a test-launch, I >> > get >> > complaints about not being able to set the caps on udpsrc to >> > application/x-rtp. >> > Like this: >> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp, >> > media=\(string\)video, clock-rate=\(int\)90000, >> >> It's just about bash syntax. The way you're using the " make bash >> thinking you're passing test-launch a first argument like this: >> >> ( udpsrc port=5000 caps= >> >> concatenated to: >> >> application/x-rtp, >> >> and a second argument like: >> >> media=\(string\)video, >> >> useless to say this is not what you should pass to the test-launch >> command. I suggest you to try replacing the outmost pair of " with ' >> or the innermost ones with \" >> >> Regards >> >> > encoding-name=\(string\)H264, payload=\(int\)96, >> > ssrc=\(guint\)2396357661, >> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! >> > rtph264depay ! >> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay >> > name-pay0 >> > pt=96 )" >> > ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax (( >> > udpsrc port=5000 caps=application/x-rtp,): could not set property "caps" >> > in >> > element "udpsrc0" to "application/x-rtp," >> > ** (lt-test-launch:20772): CRITICAL **: could not create element >> > I could not find any examples of udpsrc in a test-launch line or udpsrc >> > in a >> > gst-rtsp-server 'c' program so I am not at all sure if what I am trying >> > to >> > do is valid. >> > Morris >> > _______________________________________________ >> > 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> >> > >> > >> _______________________________________________ >> 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> > > > _______________________________________________ > 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> > > _______________________________________________ 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> </div></div></blockquote></div> </div>