By Ben Waggoner
Tips on how to compress video and audio with optimum caliber and minimum hassles. well known specialist Ben Waggoner teaches you to enhance the standard of your ultimate content material and boost powerful workflows. comprehend the elemental ideas of imaginative and prescient and listening to, observe that wisdom within the context of compression, then movement onto useful, appropriate info for growing, modifying, and compressing the easiest video and audio, even if you're supplying for the net, DVD, Blu-ray, telephones, or beyond.
Clear examples of the way to make the easiest offerings in real-world projects
Covers Mac and home windows items for a whole examine today's compression applied sciences: the entire various instruments, formats, and codecs for other kinds of deliverables are defined, targeting find out how to choose the perfect concepts for specific initiatives, avid gamers, and sources
Flash FLV and F4V
MPEG-4 and H.264
Ogg Vorbis and Theora
Silverlight and tender Streaming
iPod and iPhone
DVD and Blu-ray
Read Online or Download Compression for Great Video and Audio: Master Tips and Common Sense (2nd Edition) PDF
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Additional info for Compression for Great Video and Audio: Master Tips and Common Sense (2nd Edition)
There are clearly a lot of elements in what we see that can trigger our perception of space. These include relative size, overlapping, perspective, light and shading, blue shading in faraway objects, and seeing different angles of the object as you move your head relative to the object. 8) for how a combination of cues can. You don’t need to worry about elements that contribute to our depth perception too much for compression, except when compression artifacts degrade an element so much that the depth cues are lost.
Such quality problems can sometimes be seen when thumbnail-sized pictures seem unnaturally sharp and blocky. There’s a lot more on this topic in the preprocessing chapter. Quantization You’ve learned that sampling converts analog sounds and images into discrete points of measurement. The process of assigning discrete numeric values to the theoretically inﬁnite possible values of each sample is called quantization. We speak of quantization that has a broader range of values available as being ﬁner, and of that with a smaller range of values available as being coarser.
For most projects, the sound really is half the total experience, even if it’s only a small fraction of the bits. What Sound Is Physically, sound is a small but rapid variation in pressure. That’s it. Sound is typically heard through the air, but can also be heard through water, Jell-O, mud, or anything elastic enough to vibrate and transmit those vibrations to your ear. ” Of course, we can’t hear all vibrations. We perceive vibrations as sound only when air pressure raises and falls many times a second.