thanks You for your replays.., I got what you are saying. I want to write a program for playing buffers with help of PTS values for lipsink. how can i start. thank you. -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Gstreamer-TS-tp4659674p4659698.html Sent from the GStreamer-devel mailing list archive at Nabble.com.