Apple Motion 4 - Manual (Page 960)

Once applied, a filter’s duration can be modified to affect the object over a different
amount of time than the object’s duration. For example, applying the Soft Focus filter to
an object results in that object being blurred for the entire object’s duration in the
Timeline. Changing In and Out points of the Soft Focus filter, however, changes when the
blur is applied to the object.
To trim a filter in the Timeline
1 Position the pointer on the In or Out point (the left or right edge) of the filter you want
to trim.
2 When the pointer changes to the trim pointer, drag the In or Out point to change the
duration of the filter.
Changing a filter’s Out point
As you drag, the new In or Out points are displayed. Also displayed is the delta value,
which represents the amount of change for the duration.
In addition to changing a filter’s duration, you can also slip its position in the Timeline
relative to the layer under which its nested. This allows you to set the frame at which a
filter begins to take effect.
To slip a filter in the Timeline
µ
Click anywhere in the middle of a filter bar in the Timeline, then drag it to the left or right
to move its In point to another frame.
The filter is moved and its duration is not affected. While you drag, the new In and Out
points are indicated, along with the amount of change (the delta).
Slipping a filter
960 Chapter 16 Using Filters