How to add an effect to a moving object in video using motion tracker

Question

So, the context:I have a shaking video with a face. I motion-tracked the face (to add an effect to some parts of it, which are moving). After I motion-tracked it, I created a null object to use it as a moving guide for my adjustment layer to which I applied all the effects (because I can't apply effects to the null object). So it goes like:---the video (with a moving face)---null object (with the motion tracker's positions)---an adjustment layer (with the effects, connected to the null object) What I need: effect (with two and more properties) following the movement of the video in 2d.P.s I already have a first frame done but the effects aren't moving with the face Unfortunately, nothing's workingCan you please help me?

Mylenium · Accepted Answer

Your workflow does not make much sense, TBH. Bulge and Smear have an internal position control and adjustment layers don't work like you seem to think, anyway. Ergo the proper way to proceed is to apply the tracking directly to the effects's position controls on a comp sized layer.

Mylenium

RobShultz · Answer

If you're using point tracking I would create the null object before tracking. So you'd have the layer to be tracked on layer 2 and the null object on layer 1. Track the layer with the tracker panel and make sure that the motion target is set for null. Click OK after tracking. The null should follow the shaky footage. Then create your adjustment layer and apply your effects. With parenting have your adjustment layer be the child layer of the null.

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