Apple Final Cut Express HD - Manual (Page 816)

816 Part IX Effects
Example: Using the Chroma Keyer Filter
The following example illustrates a typical use of the Chroma Keyer filter.
1 Edit the green screen clip you want to key into the Timeline.
If you wish, you can use a superimpose edit to place the green screen clip over a clip
you want to use as the background.
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Tip: If you edit the clip into track V2 of the Timeline, you’ll have room to insert another
clip as the new composited background.
2 Apply the Chroma Keyer filter to the green screen clip you just edited in.
For more information, see “ Applying a Filter to a Clip ” on page 664.
3 In the Timeline, double-click the green screen clip to open it in the Viewer; then, in the
Viewer, click the Chroma Keyer tab.
Note: In this example, you won’t use the numeric controls that appear in the Filters tab.
4 Click the Select Color button to pick a color in the clip to key, move the pointer to the
Canvas (it turns into an eyedropper), then click the desired key color. Choose a color
that’s fairly close to the edge of your foreground subject, so that the area near the
subject is the first area of color you key out.
The color range you select with the eyedropper becomes transparent in the clip.
After selecting the first key color (not
all of the green is keyed out) Before clicking with the
eyedropper tool