ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

Exporting Alpha Channel

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Tim Franklin
Exporting Alpha Channel
on Aug 24, 2014 at 7:51:17 pm
Last Edited By Tim Franklin on Aug 24, 2014 at 8:09:41 pm

Hello all,

I have an RGB precomp that I want to place in the alpha channel for output to Silhouette. It's a matte layer which will be overtop of the RGB image. I can't seem to remember how to do this..

Any help would be greatly appreciated!!

Thanks,
Tim

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


Return to posts index

John Cuevas
Re: Exporting Alpha Channel
on Aug 24, 2014 at 9:17:05 pm

Change the track matte of the RGB layer to "Alpha Matte" or if it's just a black and white layer to "Luma Matte". F4 toggles between the switches and track mattes.

Johnny Cuevas, Editor
Thinkck.com

"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.


Return to posts index

Tim Franklin
Re: Exporting Alpha Channel
on Aug 24, 2014 at 10:04:43 pm
Last Edited By Tim Franklin on Aug 25, 2014 at 5:22:16 am

Hey John,

Thanks for the quick response! I was actually forgetting that I needed a straight alpha for the output.

Thanks!
-Tim

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


Return to posts index


John Cuevas
Re: Exporting Alpha Channel
on Aug 25, 2014 at 11:13:13 pm
Last Edited By John Cuevas on Aug 25, 2014 at 11:14:06 pm

Always the little things that get you with AE, glad you figured it out.

Johnny Cuevas, Editor
Thinkck.com

"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]