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 71
The following example demonstrates how to offset the trackers without affecting the
foreground image.
To track reference points that are offset from the foreground image:
1 Use one of the workflows above to set up a four-corner pin using the Match Move
behavior.
2 Choose Mimic Source from the Transform pop-up menu in the Behaviors tab of the
Inspector.
3 In the Canvas, drag the trackers to the offset reference points.
The image is not affected and remains locked to its original placement.
4 Click the Analyze button in the HUD or Behaviors tab of the Inspector.
The foreground element is “pinned” on the background element.
Using a Non-Match Move Four-Point Track for Corner-Pinning
This section discusses an additional four-corner pin workflow that references a four-
point track from an Analyze Motion behavior.
Note: You can also perform this workflow using the Stabilize behavior.