Unfortunately, I can't open your test composition (Patch with name
"SpookyReceivePatch" is missing"), but I'm wondering if your movie is
being rendered on a billboard instead of a sprite?
In my experience, billboards always render transparent areas as black.
Best Regards,
Ron Aldrich
Software Architects, Inc.
On Dec 14, 2008, at 8:10 PM, James Sheridan wrote:
Hi All,
I have a composition where I'm trying to frame some videos (So they
don't have square edges) and move them around. I'm placing a mask
image with a black border and transparent center just in front of
the movie (pic in attached example) which works great.
The thing I can't figure out though is how to mask around the edges
of the video properly so that when they move over each other I can't
see the mask image - see attached composition for a demo with
pictures instead of movies.
Would there be some way to use a pixel shader to not render any of
the black pixels? I know at first this seems to look like it would
just remove the mask image (exposing the video again) but I was
thinking I could render the video and frame in a "render in image"
patch first? that way if the black pixels (the frame) are not
rendered then I can see any other movie objects behind the current.
Cheers - James
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