There are different options:
(a) Use my script MochaImport (www.aescripts.com/mochaimport) to import Mocha Corner Pin Data as four AE trackpoints.
(b) Copy-and-paste the position-keyframes of your NULL to the attachpoint data of a new trackpoint such that the trackpoint moves with your NULL without the need to really track anything with it.
(c) For the local mode of Tracker2Mask create a new dummy point and copy and paste the position of your NULL or parent it to the NULL.
Best Mathias
Tracker2Mask: new tracker-assisted rotoscoping tool
Moderator: Paul Tuersley
mamoworld - tools and tutorials for After Effects
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For the rotation: This is not possible with Tracker2Mask. The best here is probably to place the mask on a rotating layer.
mamoworld - tools and tutorials for After Effects
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In principle, rotoation could be done, but it is difficult to integrate in the interface in an intuitive way: Currently Tracker2Mask works with an arbitrary number of trackpoints. Rotation works only for exactly 2 Trackpoints and it is not clear to me, around which point everything should rotate. Therefore I don't plan an extension in this way currently.
Maybe one could do something like "Layer2Mask" where you apply the translation, rotation and scale of a layer to a mask. This would allow to transfer a mask from a moving layer to a static (or differently moving) one. But I don't see many useful applications for this, do you?
Maybe one could do something like "Layer2Mask" where you apply the translation, rotation and scale of a layer to a mask. This would allow to transfer a mask from a moving layer to a static (or differently moving) one. But I don't see many useful applications for this, do you?
mamoworld - tools and tutorials for After Effects
(English and German)
(English and German)