Apple Shake 4 - Manual (Page 740)

740 Chapter 25 Image Tracking, Stabilization, and SmoothCam
Tracking File Format
The following is a sample saved track file for use with the Save Track File or Load Track
File command (right-click in the track name text field to access the shortcut menu).
TrackName track1
Note: The Save Track File or Load Track File command is different from the Load
Expression command. The Load Expression command is available in the shortcut menu
of any node’s value field and looks for formatted Shake expressions. For example, to
load the above information into a Move2D node, you must load two files, one for the
xPan parameter and one for the yPan parameter. Their formats are similar to the
following:
Linear(0,0462@1, 405@2, ....)
and
Linear(0,210@1, 192@2, ...)
Tracking Nodes
The following section includes the tracking functions located in the Transform Tool tab.
For information on other Transform functions, see Chapter 26, “
Transformations, Motion
Blur, and AutoAlign ,” on page 763.
MatchMove
The MatchMove node is a dedicated tracking node to match a foreground element to a
background element using one-point (panning), two-point (panning, scaling, or
rotation), or four-point (corner pinning) tracking. Unlike the Tracker or Stabilize node,
MatchMove can perform the compositing operation, or you can pass the transformed
foreground out for further modifications (blur, color corrections, and so on) before you
do a composite.
The MatchMove node can generate up to four tracking points, or you can load in other
tracks (created in Shake or on disk). To load another track, right-click in a trackName
text field, then choose Load Track from the shortcut menu.
Frame X Y Correlation
1.00 462.000 210.000 1.000
2.00 405.000 192.000 1.000
etc...