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Compression for Great Video and Audio, 2nd Edition by Ben Waggoner

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CHAPTER 24 Phones and Devices

Introduction

This chapter is about making content that plays back on non-PC, non–optical disc devices. That may sound more defined by what it’s not than by what it is, but the categories are pretty well-defined in practice.

While there are a lot of terms of art, the world of devices breaks down into basically two families: stuff that mainly runs off batteries, and stuff that mainly runs off AC power.

Phones and Portable Media Players

Your portable battery-powered devices include media-capable phones, iPods, Zunes, and similar small-screen devices suitable for use on the go. They’re designed for long battery life and hence low-watt operation. They’re generally going to have smaller screens than SD, although we’re ...

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