Apple Motion 4 - Manual (Page 1256)

A “confidence” curve is also displayed in the Keyframe Editor. This curve provides a visual
indication of the tracker’s accuracy relative to its parameter settings in the Inspector. The
confidence curve is not for editing purposes.
8 To stop a track, click the Stop button in the progress window or press Esc.
Tip: If it appears that the tracker loses its reference pattern, do not immediately click the
Stop button. Allow the analysis to continue for a few seconds. When the tracker fails, the
playhead jumps to the exact frame at which the track was lost.
The analyzed track, contained in the Analyze Motion behavior, can now be loaded into
other tracking behaviors (via a pop-up menu in the HUD or Inspector of the other tracking
behaviors).
Tracking behaviors
pop-up menu in the
Match Move HUD
Note: The Stabilize behavior can only load tracks from other Stabilize behaviors.
Loading Data into a Behavior
If the project contains any footage or animated objects when a Match Move, Stabilize,
Unstabilize, or Track Points behavior is applied, the nearest footage or animated object
below the behavior in the Layers tab is automatically applied to the behavior and appears
in the behavior’s Source well. This data is overwritten once a tracking analysis is done,
or when you choose another track from the tracking behaviors pop-up menu.
You can assign an animated object or tracking data to a tracking behavior in four ways:
• Choose another tracking behavior from the tracking behaviors pop-up menu.
• Drag a tracking behavior or footage object to the Source well in the HUD or Behaviors
tab of the Inspector.
• Drag an animated object to the Source well in the HUD or Behaviors tab of the
Inspector. The referenced animated object is applied as the source for the current
behavior. This option only applies to the Match Move and Track Points behaviors.
• Drag a tracking behavior or footage object directly to the current tracking behavior
in the Layers tab. The referenced tracking behavior or footage object is assigned as
the source for the current behavior.
Note: To clear a Source well, drag the item away from the well and release the mouse
button.
1256 Chapter 19 Motion Tracking