hi, i am having limited success achieving color keying using 2 stream of video. Have tried using the [pix_alpha] method and can achieve color keying using to picture sources or using video as the background and an image as the keyed foreground, but replacing the foreground image with a movie does not work. tried converting the foreground movie using [pix_rgba] but no use, it just screws up the color. using [pix_hsv2rgb] results in some sort of keying but not through the pix_alpha method just as a result of shifting the color fields around. i was wondering if a) what i am trying to do is just wrong b) some crucial step is missing c) GEM implementation on OS X is lacking
cheers, tim