Hey guys, so I have blue screen footage that was shot on mini dv. The problem is, when I try to pull a key in adobe after effects the matte has jagged edges. So I wanted to fix this problem by blurring some of the channels to get a cleaner composite. So, I followed this tutorial- http://wiki.blender.org/index.php/Image:Green_screen_08.jpg. In Blender I created a separate YCbCr node and attached that to a image node but it didn’t separate the footage into different channels. Can someone please explain how to do this to me?