Changing Filter Timing

Filters appear as a bar in the Timeline and like other duration bars, can be trimmed or moved (slipped) in time.

When you apply a filter to an object, the duration of the filter defaults to the length of the object to which it is applied. This can be seen in the Timeline.

Figure. Timeline tab showing that the filter bar matches the duration of the object to which it is applied.

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.

    Figure. Timeline tab showing a filter being resized.

    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
  • 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).

    Figure. Timeline tab showing a filter bar being slipped.