With the exception of the Stabilize behavior, the tracking behaviors begin their analysis at the current playhead position. The Stabilize behavior’s automatic analysis mode starts from the beginning of a clip (regardless of the playhead’s position). You can specify what portion of a clip is analyzed by setting In and Out points for the clip, or by trimming the tracking behavior in the Timeline or mini-Timeline.
You can also track a specific range of frames by adjusting the start and end points of the purple Analyze Motion bar in the Timeline or mini-Timeline.
Do one of the following:
Position the playhead at the correct frame, select the clip, then choose Mark > Mark Play Range In (or press Option-Command-I).
Adjust the start point of the purple tracking behavior bar in the Timeline or mini-Timeline
Note: If you adjust the length of the tracking behavior bar, make sure to set your tracking reference points within the range of the behavior.
Do one of the following:
Position the playhead at the correct frame, select the clip, then choose Mark > Mark Play Range Out (or press Option-Command-O).
Adjust the end point of the purple tracking behavior bar in the Timeline or mini-Timeline.
Note: If you adjust the length of the tracking behavior bar, make sure to set your tracking reference points within the range of the behavior.
Note: If you’re performing a reverse track analysis, set In and Out points for your track.