hi tim!

you might send me your patch (at least the part where you try the keying) so that i can have a look... keying works fine with pix_alpha here, do not forget to add an [alpha] object to the gl-queue. what version of gem are you using?

cheers leo

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Date: Sat, 21 Jun 2003 13:35:23 +0100 From: tim cleminson si1ver@seabassmassive.com To: pd-list@iem.at Subject: [PD] color keying using pd and Gem for OSX

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