Motion 5 - General Tracking Guidelines

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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.

• Sharpening or blurring a clip or an object with a filter, exporting the clip, importing

the clip into the same group as the original footage, tracking the filtered clip, then
using that tracking data as the source for other tracking behaviors.

Note: Other filter tricks may be helpful, such as using a filter to isolate a less-noisy color
channel of a clip or an object.

• Setting the View resolution to a lower setting, which may speed the tracking analysis.

What does not help you:

• Applying any filter to a clip or object before tracking.

• Soloing or isolating a tracked clip. This does not speed tracking analysis.

• Adding multiple Stabilize behaviors. This does not help to further stabilize an analyzed

clip, because the tracker analyzes the original source footage and not the analyzed clip
(or a filtered clip).

• Converting a track to keyframes and stabilizing again.

• Selecting a tracking reference feature that does not change perspective, scale, or

rotation. The Motion tracker handles changes in perspective, scale, and rotation very