A Practical Guide to Video and Audio Compression: From by Cliff Wootton

By Cliff Wootton

Research all approximately Codecs--how they paintings, in addition to layout and implementation with this complete, easy-to-use advisor to compression. After interpreting this e-book, it is possible for you to to organize and distribute specialist audio and video on any platform together with streamed to the internet, broadcast on-air, kept in PVRs, Burned onto CD-ROMs or DVDs, brought by way of broadband, or considered in Kiosk purposes, PDA units, and cell phones.

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Mathematicians are bound to argue about this, and it is similar to the situation regarding audio sample rates. But that is a topic for later on. For now, note the name Harry Nyquist, who conceived the idea of digital sampling 60 years before the technology was available to realize his invention. Trading off horizontal resolution for video is preferable to losing vertical resolution due to the artifacts that vertical interpolations will introduce. If there is significant fine detail such as text, that will become illegible after severe compression.

Another scenario could involve a virtual poker game. These are often based around VR simulations of a scene, but with suitable compression a live game could be streamed Figure 2-5 Live snooker? Source: courtesy of Etiumsoft. 22 A Practical Guide to Video and Audio Compression Figure 2-6 Online casino example. Source: copyright © Diogo Salari. to anyone who wants to dial in and watch. Virtualizing a pack of cards is possible by simulating the cards on the screen, and a video-conferencing system could be used to enable observation of facial expressions of the other players in the game.

When your marketing people strike the deal with a broadband portal to deliver your site as a major broadband experience, just how are you going to re-encode all that content? ” But the situation gets worse than that. Much worse. You have important and very complicated rights issues with media. Maybe your rights to use some of the clips have expired and they ought not to be visible on your site. Rights are sometimes granted only for modem delivery and either specifically exclude broadband or omit it.

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