Resizing Reference and Tracker Boxes

You can resize the reference and tracker boxes using the mouse, the stylus, or the numeric controls in the Timeline.

You should make the tracker box large enough to accommodate the largest single frame-to-frame motion of the reference feature in the clip. However, consider the following:

• Creating a large tracker box increases the amount of processing time required to locate a match for the reference box.
• Creating a very small tracker box means that it cannot accommodate a large position change in the motion of the reference feature.

To resize the reference or tracker box using the mouse or stylus:

1. Click the center of a box to select it.
2. Drag the handles to resize the box. To maintain the proportions of the box, press Shift and drag a handle.

To resize the reference or tracker box using numeric controls:

1. In the Timeline, expand the layer that contains the reference feature to display the Tracker(s), then expand the Tracker object, and finally, expand the Reference folder to display the reference box width and height.
2. Double-click Width or Height, and enter the width or height in the Numeric Input dialog. Or click and drag the cursor over the property's value.