alpha mix
hi,
i try to mix up to 8 videos which have additional alpha channel (videocollage).
- is there a "faster" codec which supports additional alpha cannel than "animation" for jitter ?
- can i use openGL for mixing (jit.gl.slab) ?
- is it possible to mix more than 2 streams with jit.alphablend at the same time ? if not is there another way ?
many thanks in advance
Pe
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?