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Adjust or animate clip anchor points
By default, a clip anchor point is
set at the exact center of a clip. You can change the position of
a clip in relation to its frame or motion path, however, by moving the
clip anchor point. Further, you can change the location of the clip
anchor point over time, allowing the clip to move in relation to
its frame or motion path. Animating the clip anchor point can be
used, for example, to create an image-panning effect.
- In a Timeline panel, place the current-time indicator
at the beginning of a clip.
- Click on the clip in the Program Monitor.
The clip anchor point becomes visible at the center
of the clip.  The clip anchor point in the Program Monitor
- Select the Effect Controls tab, and, if necessary, click
the triangle next to the Motion heading to open the Motion controls.
- Drag the anchor point horizontal control to the left
(decreasing the number value) to offset the anchor point to the
left of the clip, or drag it to the right (increasing the number
value) to offset it to the right.
- Drag the anchor point vertical control to the left (decreasing
the number value) to offset the anchor point toward the top of the
clip, or to the right (increasing the number value) to offset it
toward the bottom.
- Click the Add/Remove Keyframe button
 to
set the keyframe.
- (Optional) To change the location of the clip anchor
point over time, move the current-time indicator in the Effect Controls
panel or in a Timeline panel to a different point in time. Change
the horizontal and vertical anchor controls to new values.
Another keyframe marks the location of the clip anchor
point at the selected frame.
- (Optional) To set the rate of the change in the anchor
point location, drag the handles in the anchor point Velocity graph.
 Dragging a Velocity handle to ease in the change in location
of a clip anchor point
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