I tryed again. Actually I run this pipeline (the one that comes with the example): gst_rtsp_media_factory_set_launch (factory, "( " "videotestsrc ! video/x-raw-yuv,width=352,height=288,framerate=15/1 ! " "x264enc ! rtph264pay name=pay0 pt=96 " "audiotestsrc ! audio/x-raw-int,rate=8000 ! " "alawenc ! rtppcmapay name=pay1 pt=97 " ")"); In the bin folder I have a test folder, because of this: gst_rtsp_media_mapping_add_factory (mapping, "/test", factory); The result netstat -an tcp 0 0 <a href="http://0.0.0.0:8554">0.0.0.0:8554</a> 0.0.0.0:* ESCUCHAR //LISTEN VLC: same error, couldn't open. I am clueless. Thanks again, regards Rossana gst_rtsp_media_factory_set_launch (factory, "( " "videotestsrc ! video/x-raw-yuv,width=352,height=288,framerate=15/1 ! " "x264enc ! rtph264pay name=pay0 pt=96 " "audiotestsrc ! audio/x-raw-int,rate=8000 ! " "alawenc ! rtppcmapay name=pay1 pt=97 " ")"); <div class="gmail_quote">2012/4/10 Gary Thomas <<a href="mailto:gary@mlbassoc.com">gary@mlbassoc.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 2012-04-10 11:49, Rossana Guerra wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Federico, the test-video say nothing, it simply close according to debug information. I did what you suggested I run it as a root, same problem. It couldn't open. I don't even see the 8554 port listed (netstat | grep 8554) </blockquote> Did you use 'netstat -an'? If not, you might miss it as port 8554 is identified as 'rtsp-alt' Also, make sure you have all the components in the pipeline that's being used: gst_rtsp_media_factory_set_launch (factory, "( " "videotestsrc ! video/x-raw-yuv,width=352,height=288,framerate=15/1 ! " "x264enc ! rtph264pay name=pay0 pt=96 " "audiotestsrc ! audio/x-raw-int,rate=8000 ! " "alawenc ! rtppcmapay name=pay1 pt=97 " ")"); <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> I appreciate any suggestion. thanks for your tip anyway. Regards Rossana 2012/4/10 Federico Zamperini <<a href="mailto:fzamperini@tiscali.it" target="_blank">fzamperini@tiscali.it</a> <mailto:<a href="mailto:fzamperini@tiscali.it" target="_blank">fzamperini@tiscali.it</a>>> Does test-video say anything? (any error message?) My first guess is it doesn't have enough privileges to bind a listening socket; try running it as root (or sudo). </blockquote> -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">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>