This morning I cranked up my test and I was seeing about 10 second latency. After rebooting all the systems involved I am still seeing about 7 - 8 second latency. This is really strange. <div><br></div><div>Any insight?</div> <div><br></div><div>Morris<br><br><div class="gmail_quote">On Tue, Mar 1, 2011 at 8:24 AM, Morris Ford <span dir="ltr"><<a href="mailto:morrishford@gmail.com">morrishford@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> I get:<div>(lt-test-launch:21084): GStreamer-CRITICAL **: gst_poll_set_flushing: assertion `set != NULL' failed<br><br></div><div>Morris</div><div><div></div><div class="h5"><div><br><div class="gmail_quote">On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio <span dir="ltr"><<a href="mailto:gibrovacco@gmail.com" target="_blank">gibrovacco@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br> <div><br> On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford <<a href="mailto:morrishford@gmail.com" target="_blank">morrishford@gmail.com</a>> wrote:<br> > Thanks a lot for your help. That was the key to getting it to run. I now<br> > have a working rtsp-server pipe thus:<br> > ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp,<br> > media=\(string\)video, clock-rate=\(int\)90000,<br> > encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,<br> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay<br> > ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay<br> > name=pay0 pt=96 sync=false )"<br> > Problem now is that there is a 3 - 4 second latency when playing using that<br> > pipeline and playing the resulting video through vlc or quicktime.<br> > My question: How do I find what is causing the delay and what can I do to<br> > reduce the delay?<br> <br> </div>what if you don't explicitly set clock-base and seqnum-base?<br> <br> Regards<br> <div><div></div><div><br> > Thanks<br> > Morris<br> ><br> > On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <<a href="mailto:gibrovacco@gmail.com" target="_blank">gibrovacco@gmail.com</a>><br> > wrote:<br> >><br> >> Hi,<br> >><br> >> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <<a href="mailto:morrishford@gmail.com" target="_blank">morrishford@gmail.com</a>><br> >> wrote:<br> >> > I am working on receiving an udpsrc stream and publishing it as an rtsp<br> >> > stream. This gst-launch string works just fine to receive the stream:<br> >> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,<br> >> > media=\(string\)video, clock-rate=\(int\)90000,<br> >> > encoding-name=\(string\)H264, payload=\(int\)96,<br> >> > ssrc=\(guint\)2396357661,<br> >> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !<br> >> > rtph264depay !<br> >> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false<br> >> > but when I try to take that pipeline and put it into a test-launch, I<br> >> > get<br> >> > complaints about not being able to set the caps on udpsrc to<br> >> > application/x-rtp.<br> >> > Like this:<br> >> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,<br> >> > media=\(string\)video, clock-rate=\(int\)90000,<br> >><br> >> It's just about bash syntax. The way you're using the " make bash<br> >> thinking you're passing test-launch a first argument like this:<br> >><br> >> ( udpsrc port=5000 caps=<br> >><br> >> concatenated to:<br> >><br> >> application/x-rtp,<br> >><br> >> and a second argument like:<br> >><br> >> media=\(string\)video,<br> >><br> >> useless to say this is not what you should pass to the test-launch<br> >> command. I suggest you to try replacing the outmost pair of " with '<br> >> or the innermost ones with \"<br> >><br> >> Regards<br> >><br> >> > encoding-name=\(string\)H264, payload=\(int\)96,<br> >> > ssrc=\(guint\)2396357661,<br> >> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !<br> >> > rtph264depay !<br> >> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay<br> >> > name-pay0<br> >> > pt=96 )"<br> >> > ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax ((<br> >> > udpsrc port=5000 caps=application/x-rtp,): could not set property "caps"<br> >> > in<br> >> > element "udpsrc0" to "application/x-rtp,"<br> >> > ** (lt-test-launch:20772): CRITICAL **: could not create element<br> >> > I could not find any examples of udpsrc in a test-launch line or udpsrc<br> >> > in a<br> >> > gst-rtsp-server 'c' program so I am not at all sure if what I am trying<br> >> > to<br> >> > do is valid.<br> >> > Morris<br> >> > _______________________________________________<br> >> > gstreamer-devel mailing list<br> >> > <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a><br> >> > <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> >> ><br> >> ><br> >> _______________________________________________<br> >> gstreamer-devel mailing list<br> >> <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a><br> >> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> ><br> ><br> > _______________________________________________<br> > gstreamer-devel mailing list<br> > <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a><br> > <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> ><br> ><br> _______________________________________________<br> gstreamer-devel mailing list<br> <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> </div></div></blockquote></div><br></div> </div></div></blockquote></div><br></div>