Ola ShilVin! I tried here and I had this error.. *WARNING: erroneous pipeline: could not parse caps "video/x raw,format=BGRA,framerate=30/1"* our task is to write a QuickTime movie frame by frame from memory (app data) with RGB + A. Thanks Tom -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/