1
Multimedia
Chapter 7
7.1 Introduction to multimedia
7.2 Multimedia files
7.3 Video compression
7.4 Multimedia process scheduling
7.5 Multimedia file system paradigms
7.6 File placement
7.7 Caching
7.8 Disk scheduling for multimedia
2
Introduction to Multimedia (1)
Video On Demand: (a) ADSL vs. (b) cable
3
Introduction to Multimedia (2)
•Some data rates
–multimedia, high performance I/O devices
•Note: 1 Mbps = 106 bits/sec but 1 GB = 230 bytes
4
Multimedia Files
A movie may consist of several files
5
Audio Encoding (1)
•Audio Waves Converted to Digital
–electrical voltage input
–binary number as output
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