Chapter 7: Formats
104
Backwards Compatibility
The QuickTime Alternate Movies feature also enables backwards compatibility. For example,
you can create a series of progressive-download alternate movies, encoded with Cinepak for
QuickTime 3 viewers and Sorenson Video for QuickTime 4 viewers, along with a set of realtime
streaming movies for delivery from a Streaming Server for QuickTime 5, 6, and 7 viewers. This
enables you to take advantage of a wide range of new features and codecs while ensuring that
all QuickTime viewers can watch at least one version.
Other Scalability Factors
QuickTime enables you to use CPU speed as a display requirement. This enables you to deliver
higher-quality streams to computers that have the power to display them properly, while also
delivering less CPU-intensive versions to viewers with slower computers.
Required Software
This section provides information on the additional software necessary for QuickTime
encoding.
Playback
To view QuickTime movies, you must have at least a minimal installation of QuickTime. If you
are a Mac OS and Windows user, you probably already have QuickTime installed due to its
popularity as both a delivery and authoring format for the Web, CD-ROMs, Enhanced CDs,
and so forth. You must have QuickTime 4 or later in order to see streams delivered with
QuickTime streaming servers. You can download the QuickTime software from the Apple
Website at
http://www.apple.com/quicktime
Delivery
Use any standard Web (HTTP) or file (FTP) server to serve progressive-streaming QuickTime.
A QuickTime Streaming Server is required for realtime streaming of QuickTime movies.
QuickTime Version Compatibility
One decision to consider when producing QuickTime movies is which version of QuickTime
will be used for playback.
Summary of Contents for 64006-051108-9001 - Discreet Cleaner - Mac
Page 1: ...from discreet November 2000 ...
Page 8: ...Contents viii ...
Page 16: ...Chapter 1 Introduction 8 ...
Page 24: ...Chapter 2 Capture 16 ...
Page 54: ...Chapter 4 Projects 46 ...
Page 68: ...Chapter 5 Settings 60 ...
Page 148: ...Chapter 7 Formats 140 ...
Page 160: ...Chapter 8 Encoding 152 ...
Page 220: ...Chapter 8 Encoding 212 ...
Page 248: ...Chapter 11 Workflow 240 ...
Page 254: ...Chapter 12 Troubleshooting 246 ...
Page 284: ...Glossary 276 ...