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5.Use the keyframe controller at the bottom of the Track Motion window to establish distinct track motion settings throughout the duration of the track.

During playback, immediate 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, see Using keyframe animation on page 273.

Using the track motion shortcut menu

When you right-click anywhere in the Track Motion window, a shortcut menu appears:

•Restore View returns the workspace display to its original state.

•Restore Box returns the overlay to its original state (size, rotation, and position).

•Restore Rotation returns the overlay to its unrotated state.

•Restore Size returns the overlay to its original size.

•Restore Center moves the overlay to the center of the frame.

•Flip Horizontal flips the overlay backwards or left to right.

•Flip Vertical flips the overlay upside-down.

•Match Output Aspect sets the aspect ratio to the frame value.

•Make Square Aspect sets selection box to a square aspect.

Changing editing options

Use the toolbar at the top of the Track Motion window to change your editing options.

Icon Command

Description

Enable Rotation

Select this button if you want to be able to rotate, or spin, the video.

 

When the button is not selected, video is locked so you can move it horizontally or vertically, but the track

 

cannot be rotated.

Enable Snapping to Grid Select this button if you want your editing to snap to the grid.

Edit in Object Space

Select this button if you want to edit in the object's space rather than the camera's space.

 

For example, if a track is rotated, its X axis may not correspond to the X axis of the of the Video Preview

 

window. Selecting the Edit in Object Space button in conjunction with the Prevent Movement buttons allows

 

you to move the object along its own X and Y axes.

 

 

Prevent Movement (X)

Select this button if you want to prevent horizontal movement of the track.

 

 

Prevent Movement (Y)

Select this button if you want to prevent vertical movement of the track.

 

 

Lock Aspect Ratio

Select this button if you want the selection box to retain its aspect ratio during resizing.

 

When the button is not selected, the height and width can be resized independently.

 

 

Scale About Center

Select this button if you want the selection box to retain its center point when you resize the box by dragging

 

its edges.

 

When the button is not selected, the opposite side of the selection box will remain anchored when you drag the

 

edges to resize it.

 

 

Prevent Scaling (X)

Select this button if you want to lock the horizontal dimension of the selection box.

 

 

Prevent Scaling (Y)

Select this button if you want to lock the vertical dimension of the selection box.

 

 

ADDING VIDEO TRANSITIONS AND MOTION

CHP. 15