 No need to preserve colors when pulling a key | ||||||
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Sometimes it’s hard to key out a background without messing up the colors of the foreground subject that you’re trying to isolate.
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After Effects 7 Pro Keying How to Views: 743 Permalink | ||||
Rather than trying to get everything keyed out and looking good on a single layer, try this: Duplicate the layer (Command-D [PC: Ctrl-D]), apply the keying effect to the top layer, and use the top layer as a track matte for the underlying layer. (Note: To apply a track matte, click the Toggle Switches/Modes button at the very bottom of the Timeline until you see the TrkMat column, and then select one of the transparency options from the drop-down menu.) You can use the Levels effect (Effect>Color Correction>Levels) to exaggerate color differences in the top layer before applying the keying effect.
By Michael Coleman (Min. Version: After Effects 7 Pro, Category: Keying, Type: How to) 
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posted by MicGyver on Jul 12, 2009
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Lightwrap in After Effects | |||
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This brief tutorial covers the compositing technique of light wrapping.
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After Effects CS4 Keying Video-/Tutorials Views: 453 Permalink | |
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posted by jamie on Jan 13, 2012
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Lightwrap Preset | |||
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This is a preset that you can use on green screen footage or just general compositing.
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After Effects CS5 Keying Presets (ffx) Views: 340 Permalink | |
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posted by jamie on Jan 13, 2012
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