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Changing Opacity Over Time

Once you know how the basic opacity settings work, you can get more complicated and vary the opacity as the video clip progresses. To do this you must add keyframes to the clip. The opacity is set separately for each keyframe and the opacity gradually changes from one keyframe to the next. This is called opacity animation.

Here is the procedure for creating opacity keyframes (illustrated with an example below):

The Effects Window with opacity keyframes

In this example we have created four keyframes. You can see that the keyframes are shown in both the Effects Controls window (above) and the Timeline window (below).

Timeline with opacity handles