September 2012
Beginner to intermediate
328 pages
8h 9m
English
Content preview from Understanding MPEG 4Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 4
Technology Beyond the Standard
In order to better understand the implications of some of the items in the standard, this chapter will provide a bit of additional technical background. The material presented here cannot be considered to be complete, however. The selection of topics is based on many discussions and conversations about MPEG-4 with business-oriented professionals throughout recent years.
4.1. Why Do We Need Compression to Begin With?
Digitizing analog video signals expands physical bandwidth requirements. Physical transmission bandwidth or storage capacity is a natural resource that is scarce and thus expensive. This is where compression of digital data comes into play—to make transmission and storage of digital data economically ...
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