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View Full Version : how to apply a video as track map in adobe after effect

bals4u2000
09-21-2003, 09:50 PM
i was going through a video tutorial of dv garage where he tells me to apply the animated map as track map in after effect iam not that familiar with this software if some one knows how to do that please help me

the link for the tutorial is www.dvgarage.com and tutorial name is Tut_02_05_08.mov
ragecgi
09-21-2003, 11:47 PM
No problem:)

What is a Track Matte?

Many images and footage items come with their own alpha channels, which determine where that image or piece of footage will be transparent. However, you can also use the alpha channel or luminance values of a second footage item to define the first one's transparency. In AE, this second image is known as a "track matte." An "alpha matte" uses the alpha channel of the second image to determine the transparency of the first, while a "luma matte" uses the second image's luminance, or gray scale values.


Check this out for more details:

http://www.editorsguild.com/Newsletter/MarApr03/tip_ae_track_mattes.html
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