I also meet this problem,and have tried pretty hard to solve it but all failed with sadness, can any guy in this list please shed some light for us? thanks in advance. <div class="gmail_quote">On Tue, Mar 15, 2011 at 2:59 PM, lujing_2897 <<a href="mailto:lujing_2897@qq.com">lujing_2897@qq.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi, I meet a problem, when I want to a rtsp media file, the playbin say this to me: ERROR: from element /GstPlayBin:playbin0/GstDecodeBin:decodebin1: A H264 video RTP depayloader plugin is required to play this stream, but not installed. And I can not find the RTP plugin, why? my pipeline is: gst-launch playbin uri="rtsp://<a href="http://124.160.192.14:554/sxtest/avater_I_see_you_200k.mp4?userid=18605765431&userip=&spid=61111&pid=8036999801&cid=9012200020090918002400&subcontentid=9012200020090918002402&contenttype=1&mimetype=video%2F3gpp&subcontentsize=4415256&timestamp=20090916205340&life=86400&preview=1&proxy=0&oma=0&chargeuserid=&enkey=434258248529c2d7ed1ffec46d70b3d9" target="_blank">124.160.192.14:554/sxtest/avater_I_see_you_200k.mp4?userid=18605765431&userip=&spid=61111&pid=8036999801&cid=9012200020090918002400&subcontentid=9012200020090918002402&contenttype=1&mimetype=video%2F3gpp&subcontentsize=4415256&timestamp=20090916205340&life=86400&preview=1&proxy=0&oma=0&chargeuserid=&enkey=434258248529c2d7ed1ffec46d70b3d9</a>" Pls help me ASAP. omego _______________________________________________ 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> -- Best Regards