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
70 Chapter 2 Motion Tracking
Offset Four-Corner Pinning
Depending on your source footage, you may need to corner-pin an element using
reference points that are offset from the final “pinned” size of the foreground element.
You do this by offsetting the trackers using the Mimic Source option. In the simple
example below, the reference patterns to be tracked are located inside a frame, rather
than at the corners.
Because the track reference points are not flush with the inside edge of the frame, you
must offset the image from the four trackers. Otherwise, the final corner-pinned image
will appear too small.
The orange visual aid (the orange
outline) represents the resulting size
of the corner-pinned image.
The orange visual aids circle the
tracking reference points.