The Tolerance value determines how exact a match the Stabilizer requires when identifying the reference point. With a tolerance of 100%, the Stabilizer accepts anything as a match. With a tolerance of 0%, the feature being tracked must be exactly the same as the reference point. If a match is not found, a keyframe is not set, and the position of the reference point is interpolated between the previous keyframe and the next keyframe.

If the reference point is temporarily hidden by another object, you can use the Tolerance value to make the tracker ignore the reference point in parts of the clip where it is hidden, then continue tracking it normally when it reappears. This can prevent or reduce the need to manually reposition the tracker box during an analysis.

To use tolerance to track a temporarily hidden object:

1. Analyze the footage with full (100%) tolerance.
2. The tracker loses the reference point when it is hidden. Press Backspace to delete keyframes and go back to the last bad keyframe. Lower the Tolerance value until the cross hair disappears from the tracker box. The keyframe at that frame is deleted. The cross hair indicates that a frame has a keyframe.
3. Click Analyze to continue the analysis. Further analysis automatically discards the undesirable keyframes, and the position of the reference point is interpolated until the reference point reappears.