H.264, also known as MPEG-4 Part 10, also known as Advanced Video Coding, is the New Hotness when it comes to video codecs. What's it offer? Lower bit rate (and file size) than anything else out there, while looking better. Or higher resolution, also looking better, at the same bit rate and file size. Scalability from third-generation cell phones to high-definition audio. For example, a typical 320x240 multiplexed MPEG plays back at roughly 1.1 to 1.8 megabits of data per second; a QuickTime movie using H.264 video and AAC audio can do just as well in one half to one third the space (meaning faster downloads) - or at 1.1 to 1.8 megabits per second, can deliver two to three times the resolution. Suddenly, a "high-definition" version of something takes only as long to download as one the size of a postage stamp used to. And that "something" could be a music video, a television show, a Hollywood movie, or other content - the kind that drove sales of