Saving tracks – Apple Shake 4 User Manual
Page 739
Chapter 25
Image Tracking, Stabilization, and SmoothCam
739
In the applyScale and applyRotate parameters, enable “live” to use the mathematical
calculation of the four curves (track1X, track1Y, track2X, and track2Y)—live mode takes
the track1 and track2 expressions and creates scale or rotational curves you can view in
the Curve Editor.
To convert curves into editable data (generate keyframes), click “baked” in the
applyScale and applyRotate parameters.
Note: Two-point (or four-point) tracking is only available in the MatchMove and
Stabilize nodes (not the Tracker node).
Saving Tracks
Once a track is complete, you can save the track (in the Tracker, MatchMove, or Stabilize
node) for use by another tracking function, a paint stroke, or to a RotoShape node.
Note: Although you cannot attach a saved track file to a paint stroke or RotoShape
node, you can add a tracking node to your script, load the saved track file in the
tracking node, then apply the track to your shape or paint stroke. For more information
on attaching trackers to strokes and shapes, see “
Attaching a Tracker to a Paint Stroke
Attaching Trackers to Shapes and Points
To save a track file:
1
Create your track using the Tracker, MatchMove, or Stabilize node.
2
In the tracker Parameters tab, right-click the trackName field, then choose Save Track
File from the shortcut menu.
3
In the “Save tracking data to file window,” navigate to the directory in which you want
to save the track file, then enter the track file name.
4
Click OK.
The track file is saved.
To load a track file:
1
Add a Tracker, MatchMove, or Stabilize node.
2
In the tracker Parameters tab, right-click the trackName field, then choose Load Track
File from the shortcut menu.
3
In the “Load tracking data from file” window, navigate to the track you want to load.
4
Click OK.
The track is applied to the tracker.