AE绿幕抠像详解教程 Lynda – After Effects Guru： Keying with Keylight用AE自带的插件Keylight来完成绿幕拍摄的视频素材，讲解初步抠像处理，边缘的优化，遮罩的处理和调色处理等Keylight is a powerful keyer turned After Effects plugin. It was developed for use in features films and is now available with every copy of After Effects. In this course, Luisa Winters helps you understand what keying is, how Keylight works, and how to get the best green-screen footage from your shoot while in production. Then she demonstrates basic keying and techniques for refining mattes, using masks, and correcting color. Use these tips to create your own amazing composites in After Effects. It all starts with a great key!