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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36
Cutting Out the Noise
36.1 Can’t See the Forest for the Trees?
Removing noise from your content is akin to film restoration; whether it is worthwhile depends on the value of the footage. Removing the noise will help reduce the work the compressor has to do to attain a low bit rate.
36.1.1 Weird Artifacts and Problems
There are a few nasty “gotchas” that may present themselves when you are processing source footage ready for compression. They have been known and identified for years. Most of them are inherited from the analog domain that older footage is derived from. I will enumerate them here and describe what causes them and whether anything can be done to alleviate them.
36.1.2 Vision Problems and Imaginary Artifacts
Some visual artifacts ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.