Strategies for better tracking, General tracking guidelines, 980 strategies for better tracking 980 – Apple Motion 5.1.1 User Manual
Page 980
Chapter 22
Motion tracking
980
Move multiple trackers at the same time
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Drag to select or Shift-select the trackers in the Canvas, then drag them to a new position.
A selected tracker appears yellow.
Note: Because you risk moving onscreen trackers when Shift-selecting, dragging to select may
be a better option.
Turn off onscreen trackers
Do one of the following:
m
Control-click a tracker in the Canvas, then choose Hide Selected Tracker from the shortcut menu.
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Deselect the relevant Track checkbox in the Behaviors Inspector.
When the tracker is turned off, it is not used in the analysis.
Turn on onscreen trackers
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Select the relevant Track checkbox in the Behaviors Inspector.
Change the color of the onscreen tracker
1
Select the tracker and open the Behaviors Inspector.
2
Click the track’s disclosure triangle and use the Color controls to change the color of the tracker.
Color well
Strategies for better tracking
General tracking guidelines
The Motion tracker uses the source image for its tracking analysis. This means that the tracker
uses the best search area, the best color, the best contrast, subpixel accuracy, and so on in the
clip to generate the best possible tracking data. Common tracking strategies, such as using filter
tricks, manually resizing a tracking box or search area, or specifying a subpixel sampling amount
are not required.
This does not mean that you do not need work to achieve a perfect track. Use the following
guidelines to help you decide what may assist you in your tracking analysis.
What will help you
•
Removing interlacing (fields) from the footage before tracking. To remove the fields from
footage, select the footage in the Media list of the Project pane, click the Media list, then
choose an option from the Field Order pop-up menu.
Note: Interlacing can be present in clips stabilized using the automatic analysis mode in the
Stabilize behavior.
•
Stabilizing a clip, exporting the clip, importing the clip, then stabilizing the clip again.
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