Hi, Can you try the following commands. gst-launch mpegtsdemux gst-launch tsdemux Hope you will get the reason after this. JasonP ----- Jason p -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/mpegtsdemux-correct-usage-tp4660485p4660490.html Sent from the GStreamer-devel mailing list archive at Nabble.com.