Tweak the Tracker

Tweak the Tracker

There are fi ve types of track listed under the Track Type
menu in the Tracker panel.

Using Stabilize, the animated anchor point (located at the
center of the image by default) moves the layer in opposition
to Position. Increasing the anchor point’s X value
(assuming Position remains the same, which it does when
you adjust the Anchor Point value directly in the Timeline)
moves the layer to the left, just as decreasing the Position
value does.
Corner Pin tracks are very different; in After Effects these
require three or four points to be tracked, and the data is
applied to a Corner Pin plug-in to essentially distort the
perspective of the target layer. Because these tracks are
notoriously diffi cult and unreliable, the happy truth is that
MochaAE, which also generates data that can be applied to
a corner pin, more or less supersedes Corner Pin tracking.
Raw tracks generate track data only, graying out the Edit
Target button. What good is track data that isn’t applied
anywhere? It can be used to drive expressions or saved to
be applied later. It’s no different than simply never clicking
Edit Target; the raw track data is stored within the source
layer.