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Table Of Contents
Chapter 12 Keyingandcompositing 401
Finalize the key
Quite often your foreground image will have objects that you don’t want to appear in
the composited output. These could be production items like microphone booms and
light stands or the edges of the chroma key backdrop. Additionally, you might need to
resize or reposition the foreground object to better t with the background. As a nal
step, you can use the color corrector to adjust the foreground so that it matches the
look of the background.
Final Cut Pro includes eects that you can use for these purposes.
Use the Mask eect
1 In the Timeline, move the playhead to the point in the background clip (the clip you
want to superimpose the chroma key clip over) where you want the key to start.
2 In the Event Browser, select the part of the foreground clip (the chroma key clip with
the color you want to remove) you want to key over the background, and choose
Edit > Connect to Primary Storyline (or press Q).
Foreground
Background attached
as a connected clip
For details about connecting clips in this way, see “Connect clips to add cutaway shots,
titles, and synchronized
sound eects on page 11 3 .