zebdaag

I'm working on an video where i put one movie and several image on top of each other and i use alphablend to show them. I use black and white images only and it works okay but it makes my max projec very very slow....is there a way to add black and white images and substract the black and show the white without usening the alpha blend that is making my project slow. Using one alpha blend isn't the problem but i used 8 now..??

jit-alphablend

If you're using B and W images, you only need 1 plane matrices for

starters. I'm not sure how jit.alphablend handles 1-plane

matrices,but you can try it. If not, use jit.op. Multiply in2 by the

alphachannel and in1 by 255-alpha. Then add them together.

> I'm working on an video where i put one movie and several image on top of each other and i use alphablend to show them. I use black and white images only and it works okay but it makes my max projec very very slow....is there a way to add black and white images and substract the black and show the white without usening the alpha blend that is making my project slow. Using one alpha blend isn't the problem but i used 8 now..??

If you're using B and W images, you only need 1 plane matrices for
starters.  I'm not sure how jit.alphablend handles 1-plane
matrices,but you can try it.  If not, use jit.op.  Multiply in2 by the
alphachannel and in1 by 255-alpha.  Then add them together.

On 11/21/06, Joost  wrote:
>
> Hi,
>
> I'm working on an video where i put one movie and several image on top of each other and i use alphablend to show them. I use black and white images only and it works okay but it makes my max projec very very slow....is there a way to add black and white images and substract the black and show the white without usening the alpha blend that is making my project slow. Using one alpha blend isn't the problem but i used 8 now..??
>
> Hope someone can help me out here..
> Zeb
>
