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Compositing Animations with Alpha Matte

Posted: Fri, 31st Jul 2009, 3:43am

Post 1 of 4

BigNoseKid6000

Force: 825 | Joined: 5th Apr 2009 | Posts: 2

CompositeLab Pro User EffectsLab Pro User

Gold Member

I've been trying for about four hours to composite an animation scene consisting of a landscape forground and alpha matte animation with a background animation (all rendered from Vue 6 Infinite)and a Poser animation with alpha channel. It's easy enough to layer the Poser animation over the background animation, but can't seem to work the forground animation with alpha matte in to the total composite. This is a simple process in After Effects. Perhaps I'm missing something but I can't find anything about alpha mattes in any of the tutorials or postings. Can anyone help out there.
Posted: Fri, 31st Jul 2009, 3:47am

Post 2 of 4

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

Any images or clips with embedded alpha channels should automatically composite when you add them to the timeline. The alpha channel will be automatically detected and applied. What happens when you try to do this? What format is the troublesome file in?
Posted: Fri, 31st Jul 2009, 4:07am

Post 3 of 4

BigNoseKid6000

Force: 825 | Joined: 5th Apr 2009 | Posts: 2

CompositeLab Pro User EffectsLab Pro User

Gold Member

The alpha channel is not embedded. It is a seperate black and white alpha movie that Vue outputs in addition to the full color movie.
Posted: Fri, 31st Jul 2009, 4:49am

Post 4 of 4

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

Ah, then you just need to use an Object Mask in CompositeLab. Apply the mask to the footage, then in the Object Mask controls, select your alpha movie as the alpha source.