Apple Motion 4 - Manual (Page 1271)

To track reference points that are offset from the foreground image
1 Use one of the workflows above ( Four-Corner Pinning with Match Move ) to set up a
four-corner pin using the Match Move behavior.
2 Choose Mimic Source from the Transform pop-up menu in the Behaviors tab of the
Inspector.
3 In the Canvas, drag the trackers to the tracking markers.
The image is not affected and remains locked to its original placement.
4 Click the Analyze button in the HUD or Behaviors tab of the Inspector.
The foreground element is “pinned” on the background element.
Using a Non-Match Move Four-Point Track for Corner-Pinning
This section provides an additional four-corner pin workflow that references a four-point
track from an Analyze Motion behavior. The four-point tracking data collected from the
Analyze Motion behavior is loaded into a Match Move behavior in order to corner-pin a
foreground element.
Note: You can also perform this workflow using the Stabilize behavior.
To record four-point tracking using Analyze Motion and apply the tracking data to a
Match Move behavior
1 Go to the frame where you want to start the track and apply an Analyze Motion behavior
to the background element.
By default, a single tracker appears in the Canvas.
1271 Chapter 19 Motion Tracking