Tracking Images with Perspective, Scale, or Rotational Shifts
For images with significant change in size and angle, you can try a few different strategies.
First, try using a larger search area. You can increase Motion’s default tracking search size
using the Search Size parameter in the Behaviors Inspector. Click the track’s disclosure
triangle to display the Search Size parameter.
A second strategy is to lower the Fail Tolerance value. With a lower Fail Tolerance value,
the tracker is more likely to find a false match. With a higher value, the tracker is more
strict in finding a match. Click the track’s disclosure triangle to display the Fail Tolerance
parameter.
Another strategy is to jump to the midpoint frame of the clip and track forward to the
end frame of the clip. Then return to the midpoint frame and track backward to the
beginning of the clip.