Hi Fabio,
Thanks for your reply. The pipeline works fine,,,,with disp-width and disp-height. The problem is when I try to scale 320x240 video to a full screen 800x600. I think there is a problem of upscaling by more than a factor of 2 on imx27. That is why i needed a 640x480 video so that i can scale it to 800x600 because my display is 800x600.
Best,
W.