Adobe Premiere Pro CS6 - Manual (Page 419)

Remove a black or white matte
If you imported a clip that contains a solid black or white matte that’s premultiplied (merged into the RGB channels instead of stored in the alpha
channel), you can remove the black or white background.
1. In a Timeline panel, select the clip containing the matte you want to remove.
2. In the Effects panel, click the triangle to expand the Video Effects bin and then click the triangle to expand the Keying bin.
3. Drag the Remove Matte effect to the clip containing the matte.
4. (Optional) If you’re animating the Remove Matte effect over time, make sure that the current-time indicator is in the position you want. Click
the Toggle Animation icon next to the Matte Type setting.
5. Choose either White or Black for the Matte Type setting.
6. (Optional) If you’re animating the Remote Matte effect, move the current-time indicator either in the Effect Controls panel or a Timeline panel
and then change the Matte Type setting in the Effect Controls panel.
A new keyframe appears in the Effect Controls timeline when you move the handles in the Program Monitor or change the settings in the
Effect Controls panel. You can also adjust the interpolation between keyframes by editing the keyframe graph. Repeat this step as needed.
Track Matte Key effect
Eran Stern shows you how to use the track matte effect in this video tutorial .
Here's a link to a tutorial on www.premierepro.net that shows advanced color grading in Premiere Pro CS5.5 using the Track Matte Key with the
Titler.
Here’s a video tutorial for those who want to use Track Matte Key Effect in premiere Pro CS5.
Steve Muratore provides a video tutorial that shows how to use the Premiere Pro Track Matte Key effect and Photoshop to create picture frame
around video.
Jeff Schell provides a video tutorial that demonstrates the use of the Track Matte Key effect to highlight a region of a video on the Digital Producer
Magazine website .
The Track Matte Key effect creates transparent areas in a clip that correspond to the luminance levels of another clip. Transparent areas reveal
the image produced by clips in lower tracks. Exclude the matte clip from the output by selecting the clip and choosing Clip > Enable.
You can use the Track Matte Key effect to blur and obscure faces, license plate numbers, or other identifying features. Television programs use
this effect to protect the identities of their subjects. Jeff Schell provides a video tutorial that demonstrates this use of the Track Matte Key effects
on the
Digital Media Net website .
Move or change the transparent area with Track Matte Key
The Track Matte Key reveals one clip (background clip) through another (superimposed clip), using a third file as a matte that creates transparent
areas in the superimposed clip. This effect requires two clips and a matte, each placed on its own track. White areas in the matte are opaque in
the superimposed clip, preventing underlying clips from showing through. Black areas in the matte are transparent, and gray areas are partially
transparent.
A matte containing motion is called a traveling matte or moving matte. This matte consists of either motion footage, such as a green-screen
silhouette, or a still image matte that has been animated. You can animate a still by applying the Motion effect to the matte. If you animate a still
image, consider making the matte frame size larger than the sequence frame size so that the edges of the matte don’t come into view when you
animate the matte.
Because you can use a video clip as a matte in the Track Matte Key, the matte can change over time.
You can create mattes in various ways:
Use the Title panel to create text or shapes (grayscale only), save the title, and then import the file as your matte.
Apply the Chroma, RGB Difference, Difference Matte, Blue Screen, or Non Red Key to any clip and then select the Mask Only option.
Use Adobe Illustrator or Adobe Photoshop to create a grayscale image and import it into Premiere Pro.
1. Add the background clip to a track in a Timeline panel.
2. Add the clip you want to superimpose to any track higher than the track containing the background clip. This is the clip revealed by the track
matte.
(Optional) If the superimposed clip is a still image, do one of the following:
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