Hi, > 1.MPG is 640X480, and framerate is 25. > > gst-launch filesrc "location=1.MPG" ! decodebin ! video/x-raw-yuv, > > width=640,height=480,framerate=5/1 ! ... There you go then. The framerate doesn't match the one in your capsfilter. Add a videorate element between decodebin and your capsfilter. Cheers -Tim