Forums > MaxMSP

Fade in PICT with transparency over a Quicktime movie

Apr 29 2011 | 6:32 pm

hi, I’ve got an PICT image with a transparent background that I’d like to fade up and down over a movie. I’ve been playing with jit.alpablend and it shows that my PICT does have a transparent background but when I try to route it to jit.xfade the transparent part becomes white. Any thoughts?

Apr 29 2011 | 10:57 pm

Maybe this will help:

— Pasted Max Patch, click to expand. —
Apr 30 2011 | 3:26 pm

I had to make a tiff with a black background, unpack the jit.matrix @planemap and swap the alpha with the red to make it work (black becomes transparent). The other jit.matrix on the left seemed not to give a transparent element but was possibly due to my not being sure of the tiff settings from photoshop. Anyway it now works wonderfully, thanks again.


Apr 30 2011 | 8:43 pm

Don’t mention it, glad it worked for you.

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Forums > MaxMSP