CGTalk - question about using multiple keyers/mattes

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nemirc

01-24-2009, 11:25 PM

Hello :)

I'm working on a comp right now, and I need to get rid of some "garbage" left by my luma keyer. the thing is that if I add a second mask to my layer, everything that is "transparent" becomes black on the node's output.

Is there a way to aviod this? :-/

thanks

Jayk2k

01-27-2009, 04:36 PM

Set up your second keyer in a separate branch of the source material. Then use a matte control or channel boolean tool to combine the 2 mattes as required using either the math included in those tools or in combination with an effects mask applied to limit to the desired region.

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