That was the problem. I left those single quotes around the caps, after removing them it worked! Thanks for your help. Gary! ----- Jeff Lancaster -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/v4l2src-on-rtsp-server-tp4660894p4660971.html Sent from the GStreamer-devel mailing list archive at Nabble.com.