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Setting Each Roto Shape to Seperate RGBA Channels

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Tim Franklin
Setting Each Roto Shape to Seperate RGBA Channels
on Nov 12, 2014 at 3:28:29 pm

Hello all,

I need to output a set of mattes for a rotoscope project I'm involved in. Each shot has 4 shapes so I was asked to put each shape on a separate channel. Can you do this in After Effects? I know you can do it in Nuke and Silhouette but I can't figure out how to do this in AE.

Thanks for any help!

-Tim

Tim Franklin
Freelance Visual Effects Artist/ Video Editor
Media Asset Manager, CBS Sports Network
http://www.TimSFranklin.com


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Walter Soyka
Re: Setting Each Roto Shape to Seperate RGBA Channels
on Nov 12, 2014 at 7:58:37 pm

Not doable for 4 channels with Ae, as Ae will not preserve RGB values for pixels where A=0.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Tim Franklin
Re: Setting Each Roto Shape to Seperate RGBA Channels
on Nov 12, 2014 at 11:52:29 pm

Thanks for the reply! I'll just have to send an external alpha I suppose..

-Tim

Tim Franklin
Freelance Visual Effects Artist/ Video Editor
Media Asset Manager, CBS Sports Network
http://www.TimSFranklin.com


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