Image Processing Reference
In-Depth Information
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Introduction to Video
Compression
1.1
Starting Our Journey
We (that is, you and I) are going to explore video compression together. It is a journey of
discovery and surprise. Compression might seem daunting at this point, but like the old
Chinese proverb says, “Even the longest journey starts with a single step.” Let's head into
that unknown territory together, taking it carefully, one step at a time until we reach our
destination.
1.2
Video Compression Is Like . . .
It really is like trying to get a grand piano through a mailbox slot or an elephant through
the eye of a needle. In fact, we thought the elephant was such an appropriate description,
my friend Russell Merryman created a cartoon to illustrate the concept:
Video compression is all about trade-offs. Ask yourself what constitutes the best
video experience for your customers. That is what determines where you are going to
compromise. Which of these are the dominant factors for you?
Image quality
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Sound quality
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Frame rate
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Saving disk space
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Moving content around our network more quickly
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Saving bandwidth
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Reducing the playback overhead for older processors
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Portability across platforms
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Portability across players
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Open standards
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Licensing costs for the tools
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Licensing costs for use of content
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