Catálogo de publicaciones - libros

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The ubiquity of video has been possible owing to the establishment of a common representation of video signals through , with the goal of achieving common formats and interoperability of products from different vendors.

Quality generally indicates excellence, and the universal societal norm is to strive for the highest achievable quality in most fields. However, in case of digital video, a measured, careful approach is taken to allow some deficit in quality that is not always discernible by typical viewers. Such concessions in perceivable visual quality make room for a valuable accomplishment in terms of compression.

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After discussing video compression, quality, and performance aspects in the previous chapters, in this chapter we turn our attention to another dimension of video application tuning: power consumption. Power consumption needs to be considered together with those other dimensions; tradeoffs are often made in favor of tuning one of these dimensions, based on the needs of the application and with a view toward providing the best user experience. Therefore, we first introduce the concept of power consumption and view its limits on typical modern devices, then we follow with a discussion of common media workloads and usages on consumer platforms. After that, we briefly introduce various criteria for power-aware platform designs.

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