Adobe After Effects User Manual
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Analyze/Cancel
Shot Type
Horizontal Angle of View
Show Track Points
Render Track Points
Note:
Track Point Size
Create Camera
Advanced controls
Effects controls for the 3D camera tracker
The effect has the following controls and settings:
Starts or stops the background analysis of the footage. During analysis, status appears as a banner on the footage and next to
the Cancel button.
Specifies whether the footage was captured with a fixed horizontal angle of view, variable zoom, or a specific horizontal angle of view.
Changing this setting requires a resolve.
Specifies the horizontal angle of view the solver uses. Enabled only when Shot Type is set to Specify Angle of View.
Identifies detected features as 3D points with perspective hinting (3D Solved) or 2D points captured by the feature track (2D
Source).
Controls if the track points are rendered as part of the effect.
When the effect is selected, track points are always shown, even if Render Track Points is not selected. When enabled, the points are
displayed into the image allowing them to be seen during RAM preview.
Changes the displayed size of the track points.
Creates the 3D camera. A camera is automatically added when you create a text, solid, or null layer from the context menu.
Advanced controls for the 3D camera tracker effect:
Solve Method: Provides hints about the scene to help in solving the camera. Solve the camera by trying the following:
Auto Detect: Automatically detects the scene type.
Typical: Specifies the scene as that which are not purely rotational, or mostly flat.
Mostly Flat Scene: Specifies the scene as mostly flat, or planar.
Tripod Pan: Specifies the scene as purely rotational.
Method Used: When Solve Method is set to Auto Detect, this displays the actual solve method used.
Average Error: Displays the average distance (in pixels) between the original 2D source points and a reprojection of the 3D solved points
onto the 2D plane of the source footage. If a track/solve was perfect, this error would be 0 and there would be no visible difference if you
toggled between 2D Source and 3D Solved track points. You can use this value to tell if deleting points, changing the solve method, or
making other changes is lowering this value, and thus improving the track.
Detailed Analysis: When checked, makes the next analysis phase do extra work to find elements to track. The resulting data (stored in the
project as part of the effect) is much larger and slower with this option enabled.
Auto-delete Points Across Time: (After Effects CC only) With the new Auto-delete Track Points Across Time option, when you delete
track points in the Composition panel, corresponding track points (i.e., track points on the same feature/object) are deleted at other times on
the layer. You don’t need to delete the track points frame by frame to improve the quality of the track. For example, you can delete track
points on a person running through the scene, whose motion should not be considered for the determination of how the camera was moving
in the shot.
Hide Warning Banner: Use when you don't want to reanalyze footage even though there is a warning banner indicating that it be
reanalyzed.
Ground plane and origin in 3D Camera Tracker effect | CC
In After Effects CC, you can define a ground plane (reference plane) and origin, for example, the (0,0,0) point of the coordinate system within the
3D Camera Tracker effect.
1. Analyze the scene using the 3D Camera Tracker effect
2. Select a set of tracking points. This action causes the bullseye target to appear, showing the plane defined by the selected tracking points.
3. Optionally drag the target by its center to reposition it along the plane, and place the center is where you want the origin to be.
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