When the reference point is temporarily covered by another object, position the tracker manually.

To manually position the tracker box:

1. Click the Analyze Forward button to stop the analysis.
2. Advance the clip to the frame where the reference point becomes visible again, and reposition the tracker box over the reference point.
3. Click Analyze to restart the analysis at this frame. Since the X and Y shifts are recorded as keyframes in channels, the translation values for the frames in which the reference point was covered are calculated. The final result will be a smooth motion.