Adobe 25520388 User Guide - Page 392

USING ADOBE PREMIERE PRO 387 Effects and transitions Remove Matte effect The Remove Matte effect removes color fringes from clips that are premultiplied with a color. It is useful when combining alpha channels with fill textures from separate files. If you import footage with a premultiplied alpha channel, or if you create alpha channels with After Effects, you may need to remove halos from an image. Halos are caused by a large contrast between the image's color and the background, or matte, color. Removing or changing the color of the matte can remove the halos. Use Background Color to specify the new background color when you want to change the color of a matte. 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. More Help topics "Modify keyframe values" on page 420 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. Last updated 1/16/2012