CHAPTER 8
272
Superimposing and Compositing with Transparency
Areas of white in the matte create opaque areas in the superimposed clip, preventing under-
lying clips from showing through. Black areas in the matte create transparent areas, and gray
areas make partially transparent areas. To retain the original colors in your superimposed clip,
use a grayscale image for the matte. Any color in the matte removes the same level of color from
the superimposed clip.
You can create mattes in a few different ways:
•
Use the Title window to create text or shapes (grayscale only), save the title, and then
import the file as your matte.
•
Create a matte from any clip using the Chroma, RGB Difference, Difference Matte, Blue
Screen, Green Screen, or Non-Red key. Then select the Mask Only option.
•
Use Adobe Illustrator or Photoshop to create a grayscale image, import it into Premiere,
and (optionally) apply motion settings to the image.
•
Add motion to any still image with the Motion settings in Premiere. For information on
applying motion to still images, see Chapter 9, “Animating a Clip.”
To apply the Track Matte:
1
In the Video 1 track, place the clip that will play in the background.
2
In the first superimpose track, Video 2, place the clip that will be superimposed on the
clip in the Video 1 track.
3
If the Timeline window already contains a second superimpose track, go on to step 4.
If not, choose Track Options from the Timeline window menu. Click Add, enter 1 for
the Video track and 0 for the Audio track, and click OK. Click OK again.
4
In the second superimpose track, Video 3, place the clip or image you want to use as
the matte.
5
Select the clip in the Video 2 track and choose Video > Clip > Transparency. For Key
Type, choose Track Matte. Then click OK.
c00.book for PS Page 272 Tuesday, March 31, 1998 1:28 PM
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