You should set caps property on udpsrc element at receiver side. <div class="gmail_quote">On Wed, Jun 10, 2009 at 7:26 PM, Zelalem Sintayehu <<a href="mailto:zelalems@hotmail.com">zelalems@hotmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div> Hi all, I was trying to record audio and video over the network. I wanted to check that separately and succeeded with the video recording, but i couldn't record the audio part. BTW, I want to record into avi file and I used h263p for the video and wanted to use either amr or gsm for the audio. I hope this is possible. The following is my code both from teh sender and reciever side. Sender: gst-launch-0.10 -v alsasrc ! queue ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! audioconvert ! gsmenc ! rtpgsmpay ! queue ! udpsink port=5002 Receiver: gst-launch-0.10 -v udpsrc port=5002 ! queue ! rtpgsmdepay ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! avimux ! filesink location=audio.avi sync=false and I got the following error and it terminates. "WARNING: erroneous pipeline: could not link rtpgsmdepay0 to avimux0. By the way, when i store both the video later, should i still put "sync=false" (the last statement in the reciever code)? Please help me. Thank you. - Zelalem S. <hr>Windows Live™: Keep your life in sync. <a href="http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t1_allup_explore_012009" target="_blank">Check it out!</a></div> ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. <a href="http://p.sf.net/sfu/businessobjects" target="_blank">http://p.sf.net/sfu/businessobjects</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div>