KEYLIGHT 1.2 PDF

Under these conditions, you may need to use rotoscoping—the manual drawing or painting on individual frames to isolate a foreground object from its background. See Rotoscoping introduction and resources. Keying is defining transparency by a particular color value or luminance value in an image. When you key out a value, all pixels that have colors or luminance values similar to that value become transparent. Keying makes it easy to replace a background, which is especially useful when you work with objects too complex to mask easily.

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Andrew also shows an option for a paid-for plug-in for After Effects that can achieve the same thing natively inside of After Effects and could be very useful for those who do a great deal of mask creation. Tutorial, Video Tutorial Andrew Devis. In this tutorial, Andrew shows how to select the areas with problems while still maintaining a good over all matte through the use of other layers.

Sometimes when you pull a key you have problems with light spill that cannot be resolved with a single key. In this tutorial, Andrew shows how to start to create multiple keys and layer them on top of each other for excellent results. Andrew then goes on to show how to pull a basic key and then modify that key to ensure that you don't over-smooth your end results, finally viewing the keyed footage with a bright image behind to test the key.

Tutorial, Video Tutorial Lester Lauritzen. The possibilities are endless. Tutorial, Video Tutorial Aharon Rabinowitz. Sometimes you may have a very bright background or be keying from a DV camera, which nearly always results in imperfections because of the choke or screen blur effects that are necessary to achieve good edges. Light wrap, or light spill, is a very handy in these situations.

In this tutorial, John Starr Dewar demonstrates an easy way to achieve light spill with a little bit of pre-composing. Tutorial John Starr Dewar.

You'll need the Production Bundle for this one. Tutorial Alan Hamill. Adobe After Effects Procedural Matte Creation Barend Onneweer explains Procedural matte creation by combining multiple keying types into a single matte for extensive control over the final matte. This is essential for pulling those difficult mattes from badly lit greenscreens. Tutorial Barend Onneweer. Creating an Invisible Man Alan Hamill demonstrates using some keying techniques and the Displacement Map Effect to simulate a transparent, yet textured dancing man.

Procedural Matte Creation Barend Onneweer explains Procedural matte creation by combining multiple keying types into a single matte for extensive control over the final matte.

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Making Motion Graphics in After Effects

Great green screen work is more about lighting than anything else. Place your green screen footage over your background footage in an After Effects composition. Simply draw a shape around your subject and close the mask by selecting the first mask point. In the effects browser, search for the Keylight effect. Simply drag the effect to your footage in the composition timeline. Select the eyedropper button in the Keylight effect and select a green portion of your green screen. This will allow you to better see your color key.

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Adobe After Effects Keying Tutorials

Andrew also shows an option for a paid-for plug-in for After Effects that can achieve the same thing natively inside of After Effects and could be very useful for those who do a great deal of mask creation. Tutorial, Video Tutorial Andrew Devis. In this tutorial, Andrew shows how to select the areas with problems while still maintaining a good over all matte through the use of other layers. Sometimes when you pull a key you have problems with light spill that cannot be resolved with a single key. In this tutorial, Andrew shows how to start to create multiple keys and layer them on top of each other for excellent results. Andrew then goes on to show how to pull a basic key and then modify that key to ensure that you don't over-smooth your end results, finally viewing the keyed footage with a bright image behind to test the key. Tutorial, Video Tutorial Lester Lauritzen.

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Adobe After Effects

For Video Production, green screen is an important part of producing media, it is used in video interviews and films. Understanding the basics of keying in after effects is a must for any digital media producer. To follow along with the article, you must have experience with layers and masks. I do not go into detail on how each setting works, just guide you on getting a good result.

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