After learning how to use [pix_record] (see the thread "Saving Gem output as video file on MacOSX ?") I find, as did Marius Schebella, who helped me, that it gets the colors confused. Specifically, red becomes cyan, green becomes magenta, but blue stays blue. Ideas? Pd 0.39.3-extended, MacOSX 10.4, ATI ATY RadeonX1600 -- Dudley