Apple Final Cut Pro X (10.0.9) - Manual (Page 254)

Chapter 10 Add transitions, titles, effects, and generators 254
2 Drag the fade handle to the point in the clip where you want the fade to begin or end.
Fade handles from the beginning of a clip create a fade-in, while fade handles at the end of a clip
create a fade-out.
Fade-in Fade-out
Change an effect using keyframes
m Click the disclosure button to expand the effect in the Video Animation Editor, and do either of
the following:
Disclosure button
Note: If an effect doesn’t have a disclosure button, you can’t move keyframes up or down.
•
To add a keyframe: Option-click (or press Option-K) at a point on the effect control where you
want to add the keyframe.
Tip: To add a keyframe and change the effect’s parameter value at the same time, Option-click
while dragging the effect control up or down.
•
To change the effect’s parameter value at a particular keyframe: Select a keyframe and drag it up
or down.