Read e-book online A Practical Guide to Video and Audio Compression: From PDF

By Cliff Wootton

ISBN-10: 0240806301

ISBN-13: 9780240806303

Examine all approximately Codecs--how they paintings, in addition to layout and implementation with this finished, easy-to-use consultant to compression. After studying this booklet, it is possible for you to to arrange and distribute specialist audio and video on any platform together with streamed to the internet, broadcast on-air, saved in PVRs, Burned onto CD-ROMs or DVDs, added through broadband, or seen in Kiosk purposes, PDA units, and cellphones.

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Additional info for A Practical Guide to Video and Audio Compression: From Sprockets and Rasters to Macro Blocks

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This is particularly good for cell-animated footage. The TIFF image format uses this technique and is sometimes called LZW compression after its inventors, Lempel, Ziv, and Welch. Use of LZW coding is subject to some royalty fees if you want to implement it, because the concepts embodied in it are patented. This should be included in the purchase price of any tools you buy. The next level of spatial compression in terms of complexity is the JPEG technique, which breaks the image into macroblocks and applies the discrete cosine transform (DCT ).

A completely lossless coding format is desirable but expensive in terms of storage space. Experience shows that if content is compressed with poorly chosen coding techniques, the archives become unusable very quickly. Putting the tracking systems in place and logging the rushes as soon as they arrive from the field must be seen as a benefit and not a cost. In the long term it will save money. I will describe a very painful episode based on a true story. Only the names and places have been changed to protect the innocent.

The TIFF image format uses this technique and is sometimes called LZW compression after its inventors, Lempel, Ziv, and Welch. Use of LZW coding is subject to some royalty fees if you want to implement it, because the concepts embodied in it are patented. This should be included in the purchase price of any tools you buy. The next level of spatial compression in terms of complexity is the JPEG technique, which breaks the image into macroblocks and applies the discrete cosine transform (DCT ). This kind of compression starts to become lossy.

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A Practical Guide to Video and Audio Compression: From Sprockets and Rasters to Macro Blocks by Cliff Wootton


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