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mask problems, I'm confused...

Posted: Wed, 1st Jul 2009, 10:54am

Post 1 of 3

Kris Kind

Force: 800 | Joined: 19th Feb 2009 | Posts: 12

CompositeLab Pro User EffectsLab Pro User

Gold Member

Hi! I have a shot with something in the foreground of my picture. Behind that thing there must be an explosion. When I bring up my original footage on top of all layers there are still all effects visable... why?
If my original footage is on top of all other layers the other layers must be invisible...
Do I have to draw a mask in every effect layer to make it disappear behind my thing in the foreground?
Is there a way to draw just one mask that all effects will disappear in that area of my footage? I'm confused... Did masks many times but can't figure out a way right now...
Please help
Posted: Wed, 1st Jul 2009, 1:51pm

Post 2 of 3

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

If you have multiple effects, and want them all to appear to be behind something, then you will have to add a mask to each effect. You should be able to copy and paste the mask from one layer to another, so it won't take too long.

I'm not entirely understanding your explanation, but it also sounds as if you are duplicating the footage layer, and perhaps the top footage layer is somewhat transparent? This is normal, as EffectsLab isn't designed for video compositing, other than being optimized for working with certain types of stock footage. A proper compositing program will make your job much easier.

Alternatively, if your shot is locked off, and the foreground object is stationary, then you could take a single frame into an image editor, create an alpha channel around the object, then import the image into EffectsLab and lay it over the top of everything else, and other masking wouldn't be required. Any effects behind it would be completely obscured.
Posted: Wed, 1st Jul 2009, 4:24pm

Post 3 of 3

Kris Kind

Force: 800 | Joined: 19th Feb 2009 | Posts: 12

CompositeLab Pro User EffectsLab Pro User

Gold Member

you helped me much! You did understand my problem very well. So if I wanna use my effects (muzzle flashes) in the composite lab to finally composite them into my footage, how do I transfer them the right way?