-
track matte
Hi there,
I am having a problem trying to figure something out with regards to a luma matte I have set up in AFX. For example, say I have a shape as my movie layer and a stream of smoke floating upwards as my matte. As the smoke rises (and thickens) it will obviously reveal my shape, which is all good, but as the smoke fades so will my shape. How can I set it up so that my movie layer stays “revealed” (in the areas touched by the smoke) even once the smoke has floated over it? I.e.: As the shape is exposed the smoke these areas become visible, how can I make them stay visible? Even though the smoke has moved away or faded out.
Sorry if I have explained this poorly. If anyone can help, it would be greatly appreciated. I have browsed through some of the other forums here, but failed to find anything related to my problem.
Regards,
Jonathan
-
3 Replies
-
Hm. Maybe make a movie of the smoke with the time>echo effect applied, and use that as the matte? Maybe fake it by adding the transition>linear wipe to the footage to wipe it upwards?
-
You could use a mask to reveal the shape. Start out with the mask roughly the shape of the smoke, but with the opacity turned down to zero. As the smoke begins to fade, turn up the opacity of the mask. The mask shape could also be animated to spread out and up over time. You probably will need to feather the mask so that it blends better with the smoke.
I’m a rookie and I don’t know how a mask will interact with a matte situation. I don’t know if the mask would need its own layer or if you could apply it to the matte. Anyway, just a thought.
Nate
-
How about if you animate the brightness of the smoke layer right up to maximum after it reveals the text? So the layer gradually becomes completely white?
Simon
Reply to this Discussion! Login or Sign Up