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About this book

Digital Video Concepts, Methods, and Metrics: Quality, Compression, Performance, and Power Trade-off Analysis is a concise reference for professionals in a wide range of applications and vocations. It focuses on giving the reader mastery over the concepts, methods and metrics of digital video coding, so that readers have sufficient understanding to choose and tune coding parameters for optimum results that would suit their particular needs for quality, compression, speed and power.

The practical aspects are many: Uploading video to the Internet is only the beginning of a trend where a consumer controls video quality and speed by trading off various other factors. Open source and proprietary applications such as video e-mail, private party content generation, editing and archiving, and cloud asset management would give further control to the end-user.

Digital video is frequently compressed and coded for easier storage and transmission. This process involves visual quality loss due to typical data compression techniques and requires use of high performance computing systems. A careful balance between the amount of compression, the visual quality loss and the coding speed is necessary to keep the total system cost down, while delivering a good user experience for various video applications. At the same time, power consumption optimizations are also essential to get the job done on inexpensive consumer platforms.

Trade-offs can be made among these factors, and relevant considerations are particularly important in resource-constrained low power devices. To better understand the trade-offs this book discusses a comprehensive set of engineering principles, strategies, methods and metrics. It also exposes readers to approaches on how to differentiate and rank video coding solutions.

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Table of Contents

Frontmatter

Open Access

Chapter 1. Introduction

Abstract
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Shahriar Akramullah

Open Access

Chapter 2. Digital Video Compression Techniques

Abstract
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Shahriar Akramullah

Open Access

Chapter 3. Video Coding Standards

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

Open Access

Chapter 4. Video Quality Metrics

Abstract
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.
Shahriar Akramullah

Open Access

Chapter 5. Video Coding Performance

Abstract
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Shahriar Akramullah

Open Access

Chapter 6. Power Consumption by Video Applications

Abstract
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.
Shahriar Akramullah

Open Access

Chapter 7. Video Application Power Consumption on Low-Power Platforms

Abstract
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Shahriar Akramullah

Open Access

Chapter 8. Performance, Power, and Quality Tradeoff Analysis

Abstract
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Shahriar Akramullah

Open Access

Chapter 9. Conclusion

Abstract
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Shahriar Akramullah

Open Access

Appendix A. Appendix

Abstract
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Shahriar Akramullah

Backmatter

Additional information