Hi I am trying sending real-time video from sender to receiver. I would also like to send RTCP packets between sender and receiver. I am using the example scripts in gst-plugins-good, which look like * sender gst-launch -v gstrtpbin name=rtpbin v4l2src ! video/x-raw-yuv,width=352,height=288,framerate=15/1 ! timeoverlay ! ffenc_h263p ! rtph263ppay ! rtpbin.send_rtp_sink_0 rtpbin.send_rtp_src_0 ! udpsink port=5000 host=127.0.0.1 ts-offset=0 name=vrtpsink rtpbin.send_rtcp_src_0 ! udpsink port=5001 host=127.0.0.1 sync=false async=false name=vrtcpsink udpsrc port=5007 name=vrtcpsrc ! rtpbin.recv_rtcp_sink_0 * receiver gst-launch -v gstrtpbin name=rtpbin latency=100 udpsrc caps="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H263-1998" port=5000 ! rtpbin.recv_rtp_sink_0 rtpbin. ! rtph263pdepay ! ffdec_h263 ! ffmpegcolorspace ! xvimagesink udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0 rtpbin.send_rtcp_src_0 ! udpsink host=127.0.0.1 port=5007 sync=false async=false From the output, it looks to me that receiver got RTCP packets from sender. But sender didn't get any RTCP packets from receiver (even no GstUDPSrc was created). Anyone knows what's wrong here? Thanks in advance! Regards, Qin