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Table Of Contents
Understanding Tracking Data
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2. In the first frame or field of your segment, set up a tracker for your first target area, as
described in “Preparing to Generate Tracking Data” on page 320.
3. Begin generating tracking data, as described in “Generating Tracking Data” on page 330.
4. When the target area disappears, stop tracking by pressing the space bar.
5. (Option) If necessary, step back a few frames or fields in the segment until the position
indicator is on the last frame or field with a good tracking data point.
6. Right-click in the tracker timeline and select Add New Tracker Region.
A vertical bar appears in the tracker timeline to show the beginning of the new region, and
the tracking boxes for the tracker appear in the Effect Preview monitor.
7. Drag the tracking boxes to the location of your second target area and size them as
necessary.
8. Begin tracking from the start of the new region by clicking the Tracking button.
9. (Option) If necessary, repeat steps 3 through 7 for additional target areas (or to return to
tracking the original target area when it becomes visible again).
Understanding Tracking Data
After you create tracking data, a set of tracking data points exists for each tracker enabled during
the tracking operation. You can display these points in the Effect Preview monitor. You can also
view information about the status of the tracking data in the tracker timeline display.
Tracking Data in the Effect Preview Monitor
Tracking data points display in the Effect Preview monitor.
While tracking is taking place, your Avid editing application shows the location of the current
tracking data point as a cross.
Once tracking stops, your Avid editing application displays, by default, every point created
during the tracking operation. The data point for the current frame or field displays as a flashing
cross. All other data points display as solid dots.
You can control which sets of data points display and how many of the points display. You can
also manipulate the points directly in the monitor in a variety of ways. For more information, see
“Selecting, Deleting, and Moving Tracking Data Points” on page 339.
Tracking Data in the Tracker Timelines
The tracker timeline display shows you the status of tracking data over the length of the effect.