![]() Solutions and services are provided by the ecosystem of partners that either use the basic components in Windows Media 9 Series (Windows Media Encoder for authoring, Windows Media Services for distribution, Windows Media DRM technology for usage rights assignment, and Windows Media Player for playback), or build their own hardware or software components using the Windows Media Acknowledgements The vision of Windows Media 9 Series is to deliver compressed digital media content to any device over any network. The standardization process is expected to take about a Summary SMPTE accepted the work item, and the group C-24 has been working on the standardization of the WMV-9 codec for several months, and recently promoted the spec to Committee Draft (CD) stage. Given the large acceptance of and interest in WMV-9 by the industry, Microsoft has decided in September 2003 to propose the decoder syntax and semantics for standardization under the aegis of SMPTE (Society of Motion Picture and Television Engineers). We then present some results from the latest independent study by the DVD Forum, which evaluated the quality of WMV-9, and of optimized implementations of H.264/AVC, MPEG-4 ASP, and MPEG-2. Next, we compare the compression efficiency of WMV-9 to that of H.264/AVC. First, we look at performance of WMV-9 compared to MPEG-2 and MPEG-4. In this section, we present a consolidated picture of the coding efficiency improvements that WMV-9 achieves over other existing video codecs and formats. This section describes, in some detail, the salient innovations in WMV-9 that are listed in Section 2.3. The Windows Media Video 9 (WMV-9) codec is the latest video codec in this suite and is based on technology that can achieve state-of-the-art compressed video quality from very low bit rates (such as 160×120 at 10 Kbps for modem applications) through very high bit rates (1280×720/1920×1080 at 4–8 Mbps for high-definition video, and even higher bit rates for Windows Media Video 9: detailed description Windows Media 9 Series includes a variety of audio and video codecs, which are key components for authoring and playback of digital media. ![]() Although the origins of Windows Media focused on streaming compressed audio and video over the Internet to personal computers, the vision moving forward is to enable effective delivery of digital media through any network to any device. ![]() Windows Media 9 Series is the latest generation of digital media technologies developed by Microsoft. Section snippets Introduction to windows media We also discuss the complexity advantages of WMV-9 over H.264/AVC. 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. This paper includes a brief introduction to Windows Media technologies and their applications, with a focus on the compression algorithms used in WMV-9. 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. 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.Īt 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. Microsoft ® Windows Media 9 Series is a set of technologies that enables rich digital media experiences across many types of networks and devices.
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