Hi all, I have written applications for Multicast server and client using RTP. The server sends the RTP payloaded packets on the UDP and the client depayloads, decode and re-encode the RTP packets and write to a file. The file I am streaming contains H.264 video and AAC audio. ISSUE: ------ - The saved file doesn't support -ve playback. Where as the original file streamed supports -ve playback. - What data am I missing? Below are the pipelines: (For video) Server: ------- gst-launch gstrtpbin name=rtpbin filesrc location=~/Desktop/h264-aac/jurassic.mp4 ! qtdemux name=d d. ! rtph264pay ! rtpbin.send_rtp_sink_0 rtpbin.send_rtp_src_0 ! udpsink port=5002 host=224.0.0.1 rtpbin.send_rtcp_src_0 ! udpsink port=5003 host=224.0.0.1 sync=false async=false udpsrc port=5007 ! rtpbin.recv_rtcp_sink_0 -v Client: ------- gst-launch gstrtpbin name=rtpbin udpsrc caps="application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, profile-level-id=(string)4d400d, sprop-parameter-sets=(string)\"Z01ADZJSAoP2AiAAAAMDACAAAAeR4oVJ\\,aO4Cssg\\=\", ssrc=(guint)2605181711, payload=(int)96, clock-base=(guint)735690826, seqnum-base=(guint)36067" uri=udp://<a href="http://224.0.0.1:5002">224.0.0.1:5002</a> port=5002 ! rtpbin.recv_rtp_sink_0 rtpbin. ! rtph264depay ! ffdec_h264 ! x264enc ! ffmux_mp4 ! filesink location=~/Desktop/test-pipeline.mp4 -e Thanks for any suggestions.