H.264 and MPEG-4 Video Compression
Video Coding for Next-generation Multimedia
Chapter One
Introduction
1.1 THE SCENE
Scene 1: Your avatar (a realistic 3D model with your appearance and voice) walks through
a sophisticated virtual world populated by other avatars, product advertisements and video
walls. On one virtual video screen is a news broadcast from your favourite channel; you want
to see more about the current financial situation and so you interact with the broadcast and
pull up the latest stock market figures. On another screen you call up a videoconference link
with three friends. The video images of the other participants, neatly segmented from their
backgrounds, are presented against yet another virtual backdrop.
Scene 2: Your new 3G vidphone rings; you flip the lid open and answer the call. The face
of your friend appears on the screen and you greet each other. Each sees a small, clear image
of the other on the phone's screen, without any of the obvious 'blockiness' of older-model
video phones. After the call has ended, you call up a live video fee ... read full excerpt from H.264 and MPEG-4 Video Compression: Video Coding for Next-generation Multimedia ebook