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
100 Chapter 2 Motion Tracking
 Reverse: When the Reverse checkbox is turned on, the clip is analyzed from the
current playhead position to the first frame of the clip (or the first frame of the
tracking behavior).
Note: You must move the playhead to the frame from which you want to begin the
reverse analysis.
Tracker: Click the Add button to add trackers to the Analyze Motion behavior. By
default, one tracker is available. New trackers are added at the center of the Canvas.
For a description of the Tracker Preview, Offset Track, Auto-Zoom, Auto-Zoom Mode,
Look Ahead Frames, and track list parameters, as well as the tracker subparameters, see
“Tracker Controls” on page 112.
For information on using the Analyze Motion behavior, see “General Motion Tracking
Workflow (with Analyze Motion)” on page 55.
Match Move Controls
The Match Move behavior can be applied to many different object types, including
groups, cameras, shapes, particle emitters, and so on.
Important: When applying the Match Move behavior to a group, make sure that the
source footage you are tracking does not reside within the group with the applied
Match Move behavior.
Parameters in the HUD
The Match Move HUD contains controls to load an animated object or tracking data
from another tracking behavior into the behavior (via the Source well or the tracking
behaviors pop-up menu), to start the motion analysis (the Analyze button), to reverse
the direction of the track (the Reverse checkbox), to offset the track (the Offset Track
checkbox), to specify whether the destination object is four-corner pinned (the Type
pop-up menu), and to choose what transform is applied to the destination object (the
Adjust parameter). The HUD parameters, which also appear in the Inspector, are
described below.
Parameters in the Inspector
Source: Drag the source object for the match move to this well. The source object can
be another tracking behavior, an animated object, or a footage object. When a Match
Move behavior is added to an object, the nearest animated object, recorded track, or
footage object beneath the behavior in the Layers list appears in this well. To clear a
Source well, drag the item away from the well and release the mouse button.
When any non-footage object (such as a shape or mask) is dropped in the Source well,
the trackers are no longer available in Match Move.
Note: When the Match Move behavior is applied to a mask, the masked object is
automatically selected as the source.