Keying: Difference between revisions
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The most common usage of this is the "green screen", where the color green (or blue) will be made transparent. This is commonly done in movies by having a green room the actors will work in; then the background is edited in. Just like in movies, this idea is applied to [[Tennis]] to either remove aspects of a video, or (when working with editors that cannot support alpha channels) key out backgrounds for [[puzzle pieces]] to be used properly. | The most common usage of this is the "green screen", where the color green (or blue) will be made transparent. This is commonly done in movies by having a green room the actors will work in; then the background is edited in. Just like in movies, this idea is applied to [[Tennis]] to either remove aspects of a video, or (when working with editors that cannot support alpha channels) key out backgrounds for [[puzzle pieces]] to be used properly. | ||
= | =Usage= | ||
All types of keying follow the same general idea: | |||
* Choose the color that you want to key. | |||
* Set the "smoothness" (how rough the keyed-out area is) and the "tolerance" (if similar colors should be keyed out as well). | |||
* The keyed out area should be now transparent. Now, if you place this footage on top of another piece of footage, the bottom layer will appear underneath! | |||
=Types of Keys= | |||
==Chroma Key== | ==Chroma Key== | ||