Hi, I would add a queue element just after the rtspsrc. I have a similar pipeline running on an omapl-138 and it can decode mp3, flac, ALAC , aiff and wav with no issues within the software domain. I use souphttpsrc ! queue2 ! decodebin2 ! audioconvert ! audioresample ! alsasink It works extremely well with CPU running at 372mHz. <div class="gmail_quote"><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> I am streaming mp3 audio file from host to AM1808 BOARD using gstreamer and RTP server, I am able to stream using the following command. gst-launch-0.10 -v rtspsrc location=rtsp://<a href="http://192.168.174.66:8554/mp3AudioTest" target="_blank">192.168.174.66:8554/mp3AudioTest</a> ! rtpmpadepay ! mad ! audioconvert ! alsasink & But my CPU usage time is very high. Please suggest, how do i reduce the cpu usage? How do i optimize the gstreamer? </blockquote></div> I did not have to do any optimizations to gstreamer, just play around with the queue2 settings. Stuart