CHAPTER 5 Alpha Channels
Importing video into Flash is nothing new. Flash also supports an 8-bit alpha channel opening up more creative possibilities for Flash designers. Alpha channels can enhance the user experience in your video-based Flash applications.
What Are Alpha Channels?
An RGB image contains three color channels—red, green, and blue. When combined, these channels produce the full color image. The alpha channel is a fourth channel that contains an 8-bit grayscale image. This image determines the transparency of each pixel. Black pixels become transparent, and white pixels are opaque. Any value in-between black and white has a certain degree of transparency. A 32-bit color image contains 24-bit color information with an 8-bit alpha ...
Get Flash + After Effects, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
