Using the color key effect

1. Load 16-3.prproj.
2. Scrub the Timeline to see the background you are using for the greenscreen clip.
3. Drag green screen shot.avi to Video 2. Play the Timeline to see the woman walking in front of a greenscreen. Leave the current-time indicator in the middle of the clip where the woman is in full view.
4. Choose Video Effects > Keying and apply a color key to the clip in Video 2.
5. Drag the eyedropper from the Key Color parameter into the clip in the program Monitor and click the green area on the left side of the woman.
6. Adjust the Color Tolerance slider until as much of the green disappears without any of the woman's skin of clothing becoming transparent.
7. Drag a second color key filter to the green screen shot.avi clip.
8. Drag the eyedropper from the Color parameter into the clip in the Program Monitor and click the green that is on the right side of the woman.
9. Adjust the Color Tolerance slider until as much of the green disappears as possible.
10. You may have a portion of greenscreen still showing in the upper left of the frame. If so, drag a third color key filter to the clip and repeat the procedure, sampling the green that is left.
11. Press Enter to render and play the sequence.

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