Move a mask using coordinates of a Tracker?

Camera on a tripod, position, set a man with a hat walking right to left, facing a wall. I am able to follow the man's head, no problem, with the help of the bandwagon, turn. On a second layer (same video), I add a mask, top hat of the man. This hides all but one part of the wall, slightly larger than the hat of the man.

Challenge:

I want to animate the mask, and position it just above the head of man, to give the impression that the man has no hat - to remove the hat. The wall is unevenly lit, so I want the mask to move as close as possible man.

(This is just an example, I want to know how to move a mask by using data from a Tracker)

I watched many video tutorials, some of them seem to do what I want, but they are so complex that I fall off the wagon before I understand how they do it, as I'm new to After Effects.

ingvarai

Ingvarai;

Currently, there is not directly (or at least a top) how to apply the movement of the track to the position of the mask data. A user did write a script that allows you to apply data to the individual vertices mask.

However, what a lot of users do is: apply the mask to a layer of soild, apply tracking to the position of the layer data, and then set the solid as a cache alpha of the layer you want to hide.

Once said, keep in mind that after effects help on the web has not only all of the content of this manual, but it's also an incredible resource oriented community that points to a large number of tutorials, forum posts and many other useful bits. If you do a search for 'follow-up masks', you will be delighted with the amount of information you will find

Tags: After Effects

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