Apple Final Cut Pro X (10.0.9) - Manual (Page 335)

Chapter 12 Keying and compositing 335
For the following examples, this woman will be keyed over a street scene. The light stands will be
handled in
Finalize the key on page 348.
Apply the chroma key effect
1 In the Timeline, add the foreground clip (the chroma key clip with the color you want to remove)
to the primary storyline.
2 Drag the background clip (the clip you want to superimpose the chroma key clip over) so that it
is connected below the foreground clip in the primary storyline.
Foreground
Background
attached as a
connected clip
For more information about connected clips, see Connect clips to add cutaway shots, titles, and
synchronized sound effects on page 103.
3 Select the foreground clip in the Timeline, and click the Effects button in the toolbar.
Tip: For best results, also position the playhead at a point within the foreground clip that shows
the maximum amount of the color to be keyed.
4 In the Effects Browser, select the Keyer effect.
Tip: Type “keyer” in the Effects Browser’s search field to quickly find the Keyer effect.