Thank you very much! I will try that property. <div class="gmail_quote"><div dir="ltr">Sebastian Dröge <<a href="mailto:sebastian@centricular.com">sebastian@centricular.com</a>>于2015年9月21日周一 01:05写道： </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On So, 2015-09-20 at 12:18 +0000, 戚文敏 wrote: > Thank you Sebastian! > > I downloaded 1.5.91 version, compiled and installed on Ubuntu 14.04. > I changed adder into audiomixer: > > gst-launch-1.0 -vvv \ > audiotestsrc ! queue! audiomixer name=a ! autoaudiosink \ > audiotestsrc wave=6 ! queue ! a. \ > filesrc location=./a.sdp ! sdpdemux timeout=0 ! decodebin ! queue ! > a. > > When the RTP streaming paused (the 3rd stream), the first 2 streams > are not mixed. The audiomixer is blocked. Could you give me some > hints? The two streams are not live. Set is-live=true on both audiotestsrc. -- Sebastian Dröge, Centricular Ltd · <a href="http://www.centricular.com" rel="noreferrer" target="_blank">http://www.centricular.com</a> _______________________________________________ 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" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>