Streaming Media - Building and Implementing a Complete Streaming System - Gregory C. Demetriades.pdf

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Streaming Media
Building and Implementing a
Complete Streaming System
Gregory C. Demetriades
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Executive Publisher: Bob Ipsen
Executive Editor: Carol A. Long
Editorial Manager: Kathryn A. Malm
Developmental Editor: Alex Miloradovich
Managing Editor: Vincent Kunkemueller
New Media Editor: Brian Snapp
Text Design & Composition: Wiley Composition Services
This book is printed on acid-free paper.
∞
Copyright
2003 by Gregory C. Demetriades. All rights reserved.
Published by Wiley Publishing, Inc., Indianapolis, Indiana
Published simultaneously in Canada
No part of this publication may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or
otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright
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Library of Congress Cataloging-in-Publication Data:
ISBN: 0-471-20950-3
Printed in the United States of America
10 9 8 7 6 5 4 3 2 1
CONTENTS
Acknowledgments
xiii
About the Author
xv
Introduction
xvii
Part One Exploring and Understanding the Medium
1
Chapter 1 Getting Started
3
The Many Uses of Streaming
3
The Role of Streaming in the Digital Media Revolution
5
Broadband Internet
5
Digital Music
5
Consumer Electronics
6
Business
6
E-Commerce
6
The Cost of Streaming
7
Planning Your Streaming System
7
Taking the Next Step
10
Chapter 2 Understanding the Image Capture Process
11
Video Recorder Basics
11
Exposure
12
The Camera Lens
13
Focus
14
Depth of Field
15
Making Images with Visual Impact
16
Shooting without a Tripod
16
Composing for Nose Room
18
Thinking about Color
18
Creating the Illusion of Dimension
19
Adjusting the Point of View
20
Choosing the Best Background
20
Creating Your Own Aspect Ratios
21
Capturing Your Audience with Images
21
Taking the Next Step
23
iii
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iv
Contents
Chapter 3 Editing Movies with an iMac and a Digital Camera
25
Editing with Plug and Play
25
Starting with FireWire
26
Determining Your Type of Port
26
Working with iMovie
27
Taking the iMovie Tutorial
28
Starting a Project
29
Importing and Editing Video
30
Cropping a Video Clip
31
Adding Transitions
31
Adding Titles
33
Adding Sound and Music
33
Adding VideoEffects
33
Taking the Next Step
35
Part Two Choosing the Tools of the Trade
37
Chapter 4 Video Cameras and Recorders:
The First Component of Quality 39
Video Streaming Conferencing Cameras 39
Portable Videoconferencing with the Intel Pro PC Camera 40
Autotracking Cameras with Motion Detection 41
The Sony EVI-D30 Pan/Tilt/Zoom Color NTSC Camera 42
The Sony EVI-D30C Color PTZ Camera 42
The Sony EVI-D30L Color PTZ Camera 43
Videotape Recorders and Remote Control 43
Finding a High-Quality Videotape Recorder 43
Sony BVW22 Betacam SP Player 44
Sony BVMW55 Portable Betacam SP Editing Recorder/Player 45
Sony BVWD75 Betacam SP Studio Recorder/Player
46
Remote Control of Videotape Recorders
47
Taking the Next Step
48
Chapter 5 Audio/Video Capture Devices:
The Second Component of Quality
49
Laying the Foundations of Quality
49
Capture Device Interfaces
50
Basic Capture Cards
52
Professional Capture Cards
52
Digital Video Basics
54
Digitization: Sampling and Quantization
54
Human Vision and Subsampling
55
Pixel Component Values
56
The Technology and Types of Subsampling
56
Temporal Frame Rate and Interlacing
58
Square versus CCIR-601 Aspect Ratios
60
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