Slabs are definitely a good way to go for this. With slabs and jit.gl.videoplane, the alpha channel doesn't have to be contained in the same texture as the video RGB data. Here's a simple multitexturing videoplane example, but you could easily do more flexible stuff with a custom shader:

hi wesley,

thank you a lot to point me in the right direction...

it works fine with the "apply decal" funtkion for jit.gl.texture

any codecs recommends that hold a alphacannel ?

animation

and multiple-frame png and gif.

On Aug 14, 2008, at 10:58 PM, Robert Ramirez wrote:

> > animation

Hello,

I'm also doing a video collage project, however I would like to mix 1280 x 720 video with alpha channels (animation codec), AND have the ability to sample either video AND adjust the layer order.

In the patch pasted below, I used the jit.gl.texture tricks that were mentioned above, but I'm getting white pixels around the edges of the video layers. Any ideas on what I could do to get rid of these?

Also, since I am using video which already has an alpha channel, am I barred from using the uyvy colormode/shader? i.e. [jit.gl.slab blah @file cc.uyvy2rgba.jxs @dimscale 2 1]

Is there anything else I should try for optimization?