System information
Item 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 video object 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.
Saving or recalling a keyframe preset
Keyframe presets save the settings of the selected keyframe row at the cursor position.
Notes:
n Presets for the Position, 2D Shadow, and 2D Glow keyframe rows are saved separately.
n Presets for 2D and 3D track motion are saved separately: presets you create in this window will
not be available in the 3D Track Motion window. For more information, see "3D Compositing"
on page 391.
ANIMATING VIDEO EVENTS AND TRACKS293