Autodesk 495B1-05A111-1301 - 3ds Max Design 2010, User Manual

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Adjusting the Tracker Box
If the Stabilizer cannot find the reference point within the boundaries of the
tracker box during analysis, the tracker box strays from the reference point
and produces incorrect keyframes. Although you can manually correct these
keyframes, it is easier to make the tracker box large enough to accommodate
the movement of the reference point. Note that processing time increases as
the size of the tracker box increases.
To adjust the size of the tracker box:
1 Stop the analysis by clicking the Analyze Forward button.
2 Press Backspace until you reach the last good frame before the tracker
box strayed from the reference point. Adjust the size of the tracker box,
so that it is large enough to accommodate the largest frame-to-frame
movement of the reference point.
NOTE Backspacing deletes the keyframes as you go back. If you do not delete
the keyframes, they will be overwritten when you reanalyze. Backspacing in
this instance makes it easier to see the tracking path clearly.
3 Click Analyze Forward to continue the analysis.
Stabilizing
Stabilizing is a powerful process that represents one of the most common uses
of the Tracker. Stabilizing is most often used to remove unwanted camera
jitter.
The stabilizing workflow is almost identical to the tracking workflow except
the data analyzed by the tracker is inversed to negate the unwanted movement
in the footage.
In stabilizing, link the Tracker data to the Panner tool to invert the analyzed
motion and correct unwanted camera or subject motion in the X and Y
directions.
How the Stabilizer Works
To start stabilizing, select one or more reference points on your clip. Locate
the first frame containing the movement to be tracked (the reference frame).
Adjusting the Tracker Box | 783