The stopgap solution I'm using now is to record the raw output of pix_background(with the background set to black) and then when I restore it I'm using an abstraction that uses the image as its own alpha mask with [pix_takealpha] (the mask image is run through a pix_gain with a gain of 5 to saturate the mask so it's basically black and white. (is there a cleaner way to turn all non-black pixels white?)
-spencer On Fri, Aug 1, 2008 at 8:25 PM, Spencer Russell <[EMAIL PROTECTED]> wrote: > I'm mixing video by background subtracting it and then setting the > background transparent (alpha = 0), then texturing each video onto > overlapping rectangles to achieve a compositing effect. > > I need to record the different videos with [pix_record] and then play > them back later while preserving the alpha somehow, so I was thinking > that I could just replace all the transparent part with bright pink or > something and store it as regular photo jpeg frames, and then later > set all the bright pink parts to transparent when I read the video > back. > > I'm having trouble with both sides of the conversion, though. Perhaps > there's a better approach entirely? > > thanks, > spencer > _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
