H Stefan, I put this func in a loop ,and then I get the right result. Thank you ! alex Aug 7 -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/How-to-get-a-video-s-raw-width-and-height-tp4655756p4655869.html Sent from the GStreamer-devel mailing list archive at Nabble.com.