Can you check if avmux_mp4 does the job for you? ~BO -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Help-ffmux-mov-and-mp4-Audio-Video-out-of-sync-question-tp4660899p4660900.html Sent from the GStreamer-devel mailing list archive at Nabble.com.