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Using keylight in after effects software#
This breakdown will work with any software keyer, but it's especially helpful to get the most out of Keylight. The three-pass method is the same principle, but it should save you from extensive hand-animating.
Keylight's Inside Mask and Outside Mask controls let you draw a mask, set it to None, and then select it as an Inside Mask or Outside Mask. This method of isolating and focusing on the edge inspired me to devise the following workflow to achieve the same in an After Effects pre-comp, with as few extra steps as possible. The Apple Shake-based implementation of Keylight adds inputs for a garbage matte and holdout matte.
Using keylight in after effects full#
We need to turn up the “Clip Black and Clip White” options to get the full effect.Figure 7 Nice edges-it's the core of this matte that needs to be a little firmer.
White shows the areas that have not been keyed out, black represents the keyed out parts.
To fully key out the shading and shapes in the video we need to go into screen matte view, which is black and white. Here is what happens when we take out the green: To key out the greenscreen we have to use Keylight. The Foundry is also well known for other high-quality plugins. The main algorithm that Keylight uses was developed by “Computer Film Company” and was ported to After Effects by The Foundry. It is an award winning blue and greenscreen keyer. It was bundled with the release of After Effects 6.0. Keylight is The Foundry’s keying software. Our goal was to take the woman and place her into this enviroment, without the greenscreen and aperatus. We had a video of a woman with a greenscreen, and a 3d animation. Many movies have used this, as it is mostly used to “edit out” greenscreens. In other words, if you key out a colour, that colour will be deleted from the scene. Keying is “ defining transparency by a particular colour value or luminance value in an image.When you key out a value, all pixels that have colours or values similar to that value become transparent“.
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