移除素材的黑白背景 Remove Black or White Background in After Effects Creativedojo

移除素材的黑白背景 Remove Black or White Background in After Effects Creativedojo

creativedojo的视频教程，有的素材，像artbeats的爆炸，开花视频素材都是黑色背景，但是却没有透明通道，这个教程可以帮我们就觉这个问题。不用第三方插件，而且效果比直接改变素材的叠加模式好，同时也是个很好的抠像方法。

In this quick tip, we’ll take a look at how to remove a black or white background from our footage or images to get an alpha channel. We’ll be doing this without using any 3rd party plugins and will only be using built-in effects. This technique is very useful over blending modes in situations where you do not want to blend (either Screen, Add, or Multiple) your asset into the scene because they may be faded or blown out. This is also a nice way to “key out” the background so you can overlay the items nicely in your NLE without messing with blending modes.

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官网：http://creativedojo.net/tutorial/remove-black-white-background-effects/

PS：下载请用IDM或者Firefox＋VideoDownloadHelper/NetVideoHunter(插件)，捕捉视频下载。