ADOBE AFTER EFFECTS 7.0
User Guide
347
• If the area is partially obscured during tracking, set a tolerance value for Extrapolate Motion if Confidence Is
Below_%. You can determine the proper value by creating a trial track and then examining the confidence value
displayed in the Timeline panel for any frames with an obscured feature region. Type a value that is slightly larger
than the largest confidence value for the problem frames.
5 Click OK in the Tracker Plug-in Options dialog box, and then click OK again in the Track Options dialog box.
6 In the Tracker Controls panel, click the Analyze Forward or the Analyze Backward button.
7 Watch the tracking to make sure that it is accurate. If the tracking is not accurate, then click the button again to
stop tracking, adjust the settings, and begin again.
8 To preview tracking, press the spacebar.
9 When you are satisfied with the track, click Apply to copy keyframes to the selected layer or effect.
To rename a track (Pro only)
After Effects names tracks sequentially as you create them. When you track more than one feature, it is helpful to
give each track a descriptive name so that it is easier to identify.
1 In the Tracker Controls panel, choose the tracked layer from the Motion Source menu.
2 Choose the track that you want to rename from the Current Track menu.
3 Click Options.
4 Type the name for the track, and click OK.