Set Matte doesn’t follow when used on a Precomp

[Guest]

Hello everyone,

One more question about the Set Matte effect. But this one doesn’t simply solve by “precomp + activate Continusly Rasterize”, I promise.

I’ve created a sample AE file if you want to take a look. It will be much easier to understand.

https://www.dropbox.com/s/pt3v3eouu8b7p9p/Motion%20A.aep?dl=0

To summarize, I’m able to use the Set Matte inside a Precomp, but when I use the Precomp inside the main Composition, I can’t change the size or the position of the Precomp because the Set Matte doesn’t reflect the changes.

More precision :

- I’ve used a Set Matte in a Precomp.

- Then I’ve used this Precomp in my main Composition.

- Now, I need to zoom on the Precomp (in the final project, it will be a zoom on a map).

If I don’t activate the “Continuously Rasterize” on my Precomp, I can zoom, but the quality of the Precomp will be altered and will “pixelate” the more I zoom.

If I activate the “Continusly Rasterize” on my Precomp, the Set Matte effect stop working when I begin to zoom on the Precomp. The reason is probably because of the AE render order (Effect first, Transformation after).

=> Is it possible to activate the “Continuously Rasterize” on my Precomp (to keep the quality high), AND keep the Set Matte working when I change the size/zoom of the Precomp ?

PRECOMP WITH SET MATTE

COMPOSITION WITHOUT "Continuously Rasterize" (Set Matte don't follow)

COMPOSITION WITH "Continuously Rasterize" (Set Matte works, but zoom pixelate)

Thank you for your help

Wish you all the best !

Jybe

[Roei Tzoref · Accepted solution]

you can't use CR in the setup you mention. you can either parent your layers to a null instead a precomp. and you will keep sharp edges and have set matte and scale your comp. otherwise you can make your comp big enough and pre-compose so you won't need CR.

of if you want to use CR, use alpha matte instead of set matte.

here are both solutions to your problem:

TrackMatte_AlphaMatte.aep - Google Drive

[Guest]

Hi Roei,

I was secretly hoping you would take a look at my problem because I see your name all around when I find “Set Matte feedback”

I guess it will be the max we can push the Set Matte effect. I was hoping being able to use Precomp (and avoid Track Matte) to help me keep my project organization clean.

Thank you for your answer and file. It helps !

P.S.  For the readers, CR = Continuously Rasterize.

[Roei Tzoref]

Hi Jybe I see what you mean. yes I guess set matte has it's limitations.... if only we could decide the render order of layers in after effects...