O'Reilly logo

After Effects for Flash | Flash for After Effects: Dynamic Animation and Video with Adobe® After Effects® CS4 and Adobe® Flash® CS4 Professional by Marcus Geduld, Richard Harrington

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 4. Creating Transparent Video with After Effects

Transparency plays a key role in the success of animation and interactivity. By embedding transparency into graphic elements, you can composite together different elements created at different times, allowing for true flexibility.

The alpha channel is the technology behind transparency in computer graphics. It first evolved in the late 1970s at the New York Institute of Technology and then continued to be refined at Lucasfilm and at Pixar. When you employ alpha channels embedded into footage layers, transparency data can travel seamlessly between After Effects and Flash.

Creating Transparent Video with After Effects

The original footage ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required