We’ve all been through this. Creating channel separation effect by hand is a pain. You have to duplicate the layers and use channel mixer and blend modes to get what you want. Not anymore. Now with new After Effects CS4 we Tea Cups With Lids Amber Rings Wholesale Tea Trays Toddler Sleeping Bags can script a simple Pixel Bender to do just that.
Finally I got my hands on this amazing new tool from Adobe called Pixel Bender Toolkit. It allows you to script very powerful effects in a very simple way. What’s best is that scripts you create may be used as plugins and shaders in Photoshop, Flash, and After Effects.
Unfortunatelly I haven’t found a nice way to create user friendly interfaces for After Effects users. All Pixel Bender allows you to create as a parameter is a slider. But hey – I’m just starting. And besides – it’s still the first official release. I think there are many great things to come from Pixel Bender technology in the near future.
After writing your code and adding parameters you can simply put the PBK file into your plugins folder in After Effects CS4 and open the application. Your newly created shader will be available under the PixelBender group in the Effects & Presets pallette.
I’m currently working on a CustomEffect as a wrapper for the Pixel Bender code for your convinience. Here is the preview of the interface that I’m working on. I hope you’ll find this useful.
In the meanwhile grab the Pixel Bender plugin that will help you with simple RGB channel separation.