Apple Shake 4 Tutorials - Manual (Page 222)

222 Chapter 7 Tracking and Stabilization
6 Insert a CornerPin node above the Stabilize node. CornerPin is used to position the
foreground over the background.
This technique has several advantages:
• More flexibility in your compositing
• Better control over transform concatenation of the foreground
• Better control over premultiplication of the foreground
• Accurate pass-through of upstream onscreen controls
• Intuitive control of foreground positioning
• Access to the rotation and scaling values for two-point transforms
To switch the tracking from the MatchMove node to a Stabilize node:
1 In the Node View, select AddShadow1.
2 Shift-click Transform–CornerPin.
The Shift key modifier installs CornerPin off as a new branch in the node tree.
3 Connect a Transform–Stabilize node to the CornerPin node. Normally, you attach the
Stabilize node to the bus2 node to start tracking, but you already have your tracks in
MatchMove1.
4 Connect an Over node to Stabilize1.
5 Connect bus2 to the second input of Over1.
Next, copy the tracks from MatchMove1 to Stabilize1.