3
Table Of Contents
- Motion 3 Supplemental Documentation
- Contents
- 3D Compositing
- Motion Tracking
- About Motion Tracking
- How a Tracker Works
- Motion Tracking Behaviors
- Shape Track Points Behavior
- Track Parameter Behavior
- Motion Tracking Workflows
- Adjusting the Onscreen Trackers
- Strategies for Better Tracking
- Finding a Good Reference Pattern
- Manually Coaxing Your Track
- Manually Modifying Tracks
- Converting Tracks to Keyframes
- When Good Tracks Go Bad
- Smoothing Tracking Keyframe Curves
- Preserving Image Quality
- Asking Motion for a Hint
- Giving Motion a Hint
- Tracking Images with Perspective, Scale, or Rotational Shifts
- Tracking Obscured or Off-Frame Points
- Tracking Retimed Footage
- Troubleshooting Stabilizing Effects
- Removing Black Borders Introduced by Stabilizing
- Some General Guidelines
- Tracking and Groups
- Saving Tracks
- Motion Tracking Behavior Parameters
Chapter 2 Motion Tracking 53
 You can quickly apply the animation data of an object, such as animation created
by behaviors or keyframes, to another element in the project without analyzing
the source object. Drag the animated source object to the Source well in the
behavior’s HUD or Inspector to apply its movement to the destination object.
Note: The Match Move behavior can be applied to nearly any object type.
 Stabilize: This behavior removes unwanted motion in a clip, such as camera jitter.
The stabilization can be applied to the horizontal or vertical movement in the clip, or
to a combination of horizontal and vertical movement. This effect can be achieved in
one of three ways:
 Motion can analyze and automatically stabilize a clip without the use of any
trackers. In this case, the Stabilize behavior evaluates the entire frame of a clip using
motion analysis to record the movement of the camera. This behavior offers two
ways to use this recorded data: clip smoothing, which eliminates unwanted jitter
while maintaining the general motion of the camera; and clip locking, which
stabilizes a subject. This behavior can analyze and affect position, scale, and rotation.
 In addition to full-frame motion analysis, you have the option to manually add
trackers for one-point (position) tracking or two-point (position, scaling, or
rotation) tracking. You can also add as many trackers as you like. When you add
manual trackers to the Stabilize behavior, Motion stabilizes the clip using data from
the trackers rather than from an automatic motion analysis. When using this
method, the tracker moves the entire frame so that the track point falls in the same
spot in each subsequent frame.
 You can load in tracks recorded in another Stabilize behavior. To load another track,
choose a track from the tracking behaviors pop-up menu, located in the tracking
behavior HUD or Inspector.
Note: The Stabilize behavior can only be applied to footage (a QuickTime movie or
an image sequence).
 Unstabilize: This behavior does not perform any tracking. Instead, the Unstabilize
behavior applies the movement recorded by another tracking behavior, such as
Stabilize, to a clip or object. This allows you to match the camera shake in a clip to
foreground elements added in post-production. To load the tracking data, choose a
track from the tracking behaviors pop-up menu, located in the tracking behavior
HUD or Inspector.
Note: The Unstabilize behavior can be applied to nearly any object type.