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 57
The tracking keyframes contained in the behavior appear in the Keyframe Editor.
Because the Analyze Motion behavior does not transform the source object, only the
tracking keyframes appear in the Keyframe Editor. When using a Match Move or
Stabilize behavior, the tracking keyframes appear as well as the transform curves of the
source object (for Stabilize) or destination object (for Match Move).
A “confidence” curve is also displayed in the Keyframe Editor. This curve provides a
visual indication of the tracker’s accuracy relative to its parameter settings in the
Inspector. The confidence curve is not for editing purposes.
8 To stop a track, click the Stop button in the progress window or press Escape (Esc).
∏ Tip: If it appears that the tracker loses its reference pattern, do not immediately click
the Stop button. Allow the analysis to continue for a few seconds. When the tracker
fails, the playhead jumps to the exact frame at which the track was lost.
X position
curve
Y position
curve