Re: Alpha channel as matte

[Andi Loor <andiloor(at)algonet.se>]

The easiest thing to do is: crreate a composite container with two 
layers and three tracks. Put background on bottom layer (and one track), 
put fill on top layer (and one track) and put the graphic on the third 
track. Now drag the track icon (very left of track) from the track 
carrying the graphic and place it on the alpha picture icon of the top 
layer. The graphic will be added as alpha on the top layer. By 
rightclicking on the picture icon of the graphic (very right alpha on 
top layer) you can choose to use the rgb or alpha information. 
Rightclicking on the alpha or between the alphas (on the same layer) 
will give you different operations and possebilities.
Good luck
Andi

Martin Balk wrote:

> Try using "key combine".
> Martin
> ----- Original Message ----- 
> From: "kennitris" <kennitris(at)glueedit.com>
> To: <DS(at)Softimage.COM>; <DS(at)Softimage.COM>
> Sent: Tuesday, October 18, 2005 8:45 AM
> Subject: Alpha channel as matte
>
>
>  
>
> > Nitris V7.5
> >
> > I need some guidance making this happen.  I have an animated graphic
> >    
> (text)
>  
>
> > thatwas created in AE with a Premultiplied Alpha.  I need to use this
> >    
> alpha
>  
>
> > as a hole cutter so when the text animates in, the hole is filled with the
> > video layer underneath it ( I don't want to use the fill that is built in
> > with the graphic.  I tried putting the shot(new fill) in a container and
> > with a composite node, used the animated graphic as a mask and selected
> > Alpha as mask source.  I wasn't really getting the right results.
> >
> > Any help is muchoa appreciated.
> >
> > TIA
> >
> > KEN
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--
Andi Loor
www.andiloor.se

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