diff --git a/scripts/gstreamer.sh b/scripts/gstreamer.sh
index 0d07a67..2c72c0b 100644
--- a/scripts/gstreamer.sh
+++ b/scripts/gstreamer.sh
@@ -33,3 +33,9 @@ gst-launch-1.0 -vt \
 
 # side-by-side video
 gst-launch-1.0 -e v4l2src device=/dev/video0 ! image/jpeg,width=1280,height=720,framerate=30/1 ! jpegdec ! videobox left=320 right=320 ! videomixer name=mix sink_0::xpos=0 sink_1::xpos=640 ! autovideosink  videotestsrc pattern=smpte ! "video/x-raw,format=BGRx,width=1280,height=720" ! videobox left=320 right=320 ! mix.
+
+# RTP multiplexing based on ssrc
+# send:
+gst-launch-1.0 -vvtcm audiotestsrc ! rtpgstpay config-interval=1 ssrc=12345 ! udpsink host=127.0.0.1 port=5000
+# receive:
+gst-launch-1.0 -vvtcm udpsrc port=5000 caps="application/x-rtp,media=application,clock-rate=90000,encoding-name=X-GST" ! rtpssrcdemux ! rtpgstdepay ! autoaudiosink