System information
6. Use the buttons at the top of the dialog to allow or prevent movement or scaling. For more
information, see "Changing editing options" on page 396.
Right-click the workspace to display a shortcut menu that displays commands to restore,
center, or flip the selection box. You can also force the box to match the source media's aspect
ratio or your project's output aspect ratio. Matching the output aspect ratio can prevent black
bars from appearing when you use source media (such as photographs) that does not match
your project's aspect ratio.
7. The 3D track motion occurs instantly, and the results are updated in the Video Preview window.
8. Use the keyframe controller at the bottom of the Track Motion window to establish distinct motion
settings throughout the duration of the tracks.
9. During playback, intermediate frames are interpolated to create smooth motion.
Expand the Keyframe interpolation heading on the left side of the window and drag the
Smoothness slider to adjust the interpolation. For more information about keyframe animation,see
"Keyframe Animation" on page 294.
Applying a stereoscopic 3D camera
The Stereoscopic 3D Camera controls allow you to add stereoscopic depth to 3D track compositing
elements.
1. Set up your project as a stereoscopic 3D project. For more information, see "Setting up your
stereoscopic 3D project" on page 201.
2. Add 2D media to the timeline.
3.
Click the Track Motion button . The Track Motion window is displayed.
4. From Compositing Mode drop-down list, choose 3D Source Alpha.
5. Click the Expand button next to the Stereoscopic 3D Camera heading on the left side of the
Track Motion window. The Lens Separation and Depth Adjust controls are displayed.
6. Use the Lens Separation and Depth Adjust controls to set the depth of your media:
Item Description
Lens Separation Type a value in the box (or click the to display a slider you can
drag) to set the distance between the lenses in your virtual
stereoscopic 3D camera.
The setting represents a percentage of the frame width. For
presentation on a 40-inch HDTV, the value typically would not
exceed 7%. For theatrical projection, the value typically would not
exceed 0.5%.
COMPOSITING VIDEO395