April 2005
Intermediate to advanced
800 pages
20h 52m
English
Content preview from A Practical Guide to Video and Audio CompressionBecome 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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31
Preparing to Encode Your Video
31.1 Introduction
This chapter (as do the ones that follow) covers the practicalities of encoding good-looking video. The consensus among compressionists (experienced practitioners in video compression) is that this is a mixture of art, craft, and science. The bulk of the work involves preprocessing the video before the compression begins.
31.2 The Workflow
The process follows an ordered sequence that is broken into several major sections:
• Bringing the video into the system—ingesting
• Temporal preprocessing—dealing with timing
• Spatial preprocessing—dealing with sizing
• Color correction—grading and picture quality
• Noise removal—cleaning it up
• Audio preparation
• Encoding the content
• Postprocessing ...
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