Journal ArticleDOI
Windows Media Video 9: overview and applications
Sridhar Srinivasan,Pohsiang Hsu,Tom Holcomb,Kunal Mukerjee,Shankar Regunathan,Bruce Lin,Jie Liang,Ming-Chieh Lee,Jordi Ribas-Corbera +8 more
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TLDR
Analysis, experimental results, and independent studies that demonstrate quality benefits of WMV-9 over a variety of codecs, including optimized implementations of MPEG-2, MPEG-4, and H.264/AVC are presented.Abstract:
Microsoft ® Windows Media 9 Series is a set of technologies that enables rich digital media experiences across many types of networks and devices. These technologies are widely used in the industry for media delivery over the internet and other media, and are also applied to broadcast, high definition DVDs, and digital projection in theaters. At the core of these technologies is a state-of-the-art video codec called Windows Media Video 9 (WMV-9), which provides highly competitive video quality for reasonable computational complexity. WMV-9 is currently under standardization by the Society of Motion Picture and Television Engineers (SMPTE) and the spec is at the CD (Committee Draft) stage. This paper includes a brief introduction to Windows Media technologies and their applications, with a focus on the compression algorithms used in WMV-9. We present analysis, experimental results, and independent studies that demonstrate quality benefits of WMV-9 over a variety of codecs, including optimized implementations of MPEG-2, MPEG-4, and H.264/AVC. We also discuss the complexity advantages of WMV-9 over H.264/AVC.read more
Citations
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Journal ArticleDOI
Sample Adaptive Offset in the HEVC Standard
Chih-Ming Fu,Elena Alshina,Alexander Alshin,Yu-Wen Huang,Chen Ching-Yeh,Chia-Yang Tsai,Hsu Chih-Wei,Shaw-Min Lei,Jeong-Hoon Park,Woo-Jin Han +9 more
TL;DR: This paper provides a technical overview of a newly added in-loop filtering technique, sample adaptive offset (SAO), in High Efficiency Video Coding (HEVC), to reduce sample distortion by first classifying reconstructed samples into different categories, obtaining an offset for each category, and then adding the offset to each sample of the category.
Fast fourier transform algorithms with applications
Shuhong Gao,Todd Mateer +1 more
TL;DR: This book presents an introduction to the principles of the fast Fourier transform, which covers FFTs, frequency domain filtering, and applications to video and audio signal processing.
Journal ArticleDOI
Analysis and architecture design of variable block-size motion estimation for H.264/AVC
TL;DR: Two hardware architectures are proposed that can support traditional fixed block-size motion estimation as well as VBSME with less chip area overhead compared to previous approaches and an eight-parallel SAD tree with a shared reference buffer for H.264/AVC integer motion estimation is proposed.
Journal ArticleDOI
Overview of H.264/MPEG-4 part 10
TL;DR: The performance comparisons show that H.264 can achieve a coding efficiency improvement of about 1.5 times or greater for each test sequence related to multimedia, SDTV and HDTV.
Patent
Multimedia distribution system
TL;DR: In this article, the authors describe a multimedia file and methods of generating, distributing and using the multimedia file, which can contain multiple video tracks, audio tracks, multiple subtitle tracks, a complete index that can be used to locate each data chunk in each of these tracks and an abridged index that enables the location of a subset of the data chunks in each track.
References
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Book
JPEG: Still Image Data Compression Standard
TL;DR: This chapter discusses JPEG Syntax and Data Organization, the history of JPEG, and some of the aspects of the Human Visual Systems that make up JPEG.
Journal ArticleDOI
Variable block-size transforms for H.264/AVC
TL;DR: Simulation results reveal a performance increase up to 12% overall rate savings and 0.9 dB in peak signal-to-noise ratio.
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Lapped transform via time-domain pre- and post-filtering
TL;DR: A general framework for block-based signal decomposition with a high degree of flexibility and adaptivity is developed by adding simple time-domain pre- and post-processing modules onto existing block discrete cosine transform (DCT)-based infrastructures.
Journal ArticleDOI
Optimizing motion-vector accuracy in block-based video coding
TL;DR: A theoretical framework to find the motion-vector accuracies that minimize the total encoding rate with this type of coder is presented and results suggest that the formulas are accurate and that significant bit rate savings can be achieved when the optimization procedures are used.
Journal ArticleDOI
Optimizing block size in motion-compensated video coding
TL;DR: A procedure to determine the optimal block size that minimizes the encoding rate for a typical block-based video coder is derived and this formula shows that the best block size is a function of the accuracy with which the motion vectors are encoded and several parameters related to key characteristics of the video scene.