"Track Matte" feature for the "Set Matte" Effect.
CC composite is great for compositing its own layer over itself again, the track mattes is good for tracking an alpha/luma of a layer above itself.
However, many times I'd like to composite, say an icon, over a circle shape - then animate each one independently (perhaps the circle scales up and the icon slides down to the centre of the circle), then, have the icon track the circles alpha channel so you only ever see the icon inside the circle.
Set matte doesnt often work as you are manipulating transform properties, and set matte seems to only work when both layers are the same dimensions or their default transform properties otherwise the matte is out of alignment.
The track matte works but you have to duplicate the circle layer and put it above the icon, then alterations to the circle animation would have to be replicated (barring fiddly pick whipping).
So, the feature would be like a track matte for any layer, essentially (could remove the track matte switch).
I think it could be a setting or check box in the "Set matte" effect, simply "track matte" which would track any layers matte/luma etc, as it appears in the composition, like it has been pre-composed but without having to pre-compose.
I hope this makes sense.
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4 comments
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John Hughes
commented
Dropping this link here. This feature was requested by Sander Van Dijk nearly 4 years ago. I would vote on his original posting too. Realllyyyy hope they can add this feature someday.
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Steve Skazenski
commented
A hacky workaround is to use the Transform effect instead of standard layer transform, and make sure Effects & Masks is selected instead of Source. Unfortunately you can lose quality (e.g. Transform effect scaling up on a shape layer will treat it as a bitmap instead of vector/continually rasterized), but can work OK with position or scaling less than 100%.
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the dudes
commented
"Set Matte" desperately needs an overhaul.
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Bruno Quintin
commented
I think it has already been asked several times: the Track Matte should be able to target any layer of the compositon with a link system like for the parents.
I see another improvement that would be great : add a fourth choice in the effects dropdown menu that uses another layer of the composition as Set Matte : after "Source", "Masks", "Effects & Masks" add "Trasnform" (or All)