Windows Media Video (WMV) is a generic name for the set of video codec technologies developed by Microsoft. It is part of the Microsoft Windows Media framework. A codec is a device or program capable of performing encoding and decoding on a digital data stream or signal. ... Microsoft Corporation, (NASDAQ: MSFT, HKSE: 4338) is a multinational computer technology corporation with global annual revenue of US$44. ... Windows Media is a multimedia framework for media creation and distribution for Microsoft Windows. ...

Windows Media Video
File extension:	.wmv
MIME type:	video/x-ms-wmv
Uniform Type Identifier:	com.microsoft.windows-​media-wmv
Developed by:	Microsoft
Type of format:	video file format

Image File history File links No higher resolution available. ... A filename extension is a suffix to the name of a computer file applied to show its format. ... Multipurpose Internet Mail Extensions (MIME) is an Internet Standard that extends the format of e-mail to support: text in character sets other than US-ASCII; non-text attachments; multi-part message bodies; and header information in non-ASCII character sets. ... A Uniform Type Identifier (UTI) is a string that uniquely identifies the type of a class of items. ... Microsoft Corporation, (NASDAQ: MSFT, HKSE: 4338) is a multinational computer technology corporation with global annual revenue of US$44. ... A video file format is a standard for encoding digital video, audio and some auxiliary information (metadata) into a file. ...

Windows Media Video File Format

Main article: Advanced Systems Format

WMV (*.wmv) files use Microsoft's ASF container format. These files can be played by Windows Media Player and other players such as MPlayer, VLC media player or Media Player Classic. Many third-party players exist for various platforms such as Linux that use the FFmpeg implementation of the WMV codecs. Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... Windows Media Player (WMP) is a digital media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... This article is about the open source media player. ... VLC media player is a free software (GPL) media player by the VideoLAN project. ... Media Player Classic (MPC) is a compact free software media player for Microsoft Windows. ... Linux (IPA pronunciation: ) is a Unix-like computer operating system. ... FFmpeg is a collection of free software that can record, convert and stream digital audio and video. ... A codec is a device or program capable of performing encoding and decoding on a digital data stream or signal. ...

The extension .WMV typically describes ASF files that use Windows Media Video codecs. The audio codec used in conjunction with Windows Media Video is typically some version of Windows Media Audio, or in rarer cases the somewhat deprecated Sipro ACELP.net audio codec. Microsoft recommends that ASF files containing non-Windows Media codecs use the more generic .ASF file extension. Windows Media Audio (WMA) is brand name for several technically distinct proprietary compressed audio file formats developed by Microsoft. ... Algebraic Code Excited Linear Prediction or ACELP is a speech encoding algorithm where a limited set of pulses is distributed as excitation to linear prediction filter. ...

Although WMV is generally packed into an Advanced Systems Format (ASF) container format, it can also be put into AVI or Matroska containers. The resulting files will be named .AVI, or .MKV respectively. WMV can be stored in an AVI file when using the WMV 9 Video Compression Manager (VCM) codec implementation. One common way to encode WMV in AVI is to use the VirtualDub encoder. Microsoft's Windows Media Player for the Mac does not support all WMV encoded files since it supports only the ASF file container. Other files can be played with Flip4Mac and QuickTime or MPlayer for Mac OS X. Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... AVI, an acronym for Audio Video Interleave, is a multimedia container format introduced by Microsoft in November 1992, as part of the Video for Windows technology. ... The Matroska Multimedia Container is a true multimedia container that allows you to have in one single file an unlimited number of audio, video, picture or subtitle files. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... AVI, an acronym for Audio Video Interleave, is a multimedia container format introduced by Microsoft in November 1992, as part of the Video for Windows technology. ... Video for Windows was a multimedia technology developed by Microsoft that allowed Microsoft Windows to play digital video. ... VirtualDub is an open source video capture and linear processing tool for Microsoft Windows. ... Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... Flip4Mac is a trademarked brand name for Telestream, Inc. ... QuickTime is a multimedia framework developed by Apple Inc. ... This article is about the open source media player. ...

When encapsulated in ASF file format, WMV can support DRM protected content. Digital rights management (DRM) is an umbrella term referring to technologies used by publishers or copyright owners to control access to or usage of digital data or hardware, and to restrictions associated with a specific instance of a digital work or device. ...

Codecs

Windows Media Video

Windows Media Video (WMV), being a popular codec for distributing video on the Internet, competes with other codecs such as RealVideo, DivX, Xvid, and H.264. Generally speaking, common usage of the term WMV refers to this codec only. This codec supports variable bit rate, average bit rate, and constant bit rate encoding. RealVideo is a proprietary video format developed by RealNetworks. ... DivX is a brand name of products created by DivX, Inc. ... Xvid (formerly XviD) is a video codec library following the MPEG-4 standard. ... H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ... Variable bit rate (VBR) is a term used in telecommunications and computing that relates to sound or video quality. ... Average bit rate refers to the average amount of data transferred per second. ... Constant bit rate (CBR) is a term used in telecommunications, relating to the quality of service. ...

The first version of the WMV codec, WMV 7, was released in 1999. It was originally developed as a proprietary codec for low-bitrate streaming applications. It is believed that WMV 7 (FourCC: WMV1) was built upon Microsoft's own non-standard version of MPEG-4 Part 2, and has received continued proprietary development from Microsoft. The second version of the codec, WMV 8, was released in 2001 along with Windows Media Player 8. A FOURCC (literally, four character code) is a sequence of four bytes used to uniquely identify data formats. ... MPEG-4 Part 2 is a video compression technology developed by MPEG. It belongs to the MPEG-4 ISO/IEC standard (ISO/IEC 14496-2). ... Windows Media Player (WMP) is a digital media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ...

The current version of the codec, WMV 9, was released in 2003 as part of the Windows Media 9 Series launch. This version introduced interlaced video encoding and video smoothing^[1]. It has been slightly revised to improve encoding speed and quality, and fixed the issue of frame-dropping problems with ABR encoding for high-resolution video^[2]. ABR may refer to: Abercynon North railway station (National Rail code: ABR), one of two railway stations serving the village of Abercynon in the Cynon Valley, South Wales Aberdeen Regional Airport (IATA airport code: ABR), a public airport east of Aberdeen, South Dakota, USA Auditory brainstem response, an electrical signal...

WMV is a mandatory video codec for PlaysForSure-certified online stores and devices, as well as Portable Media Center devices. Many uncertified devices also support the codec, such as set-top DVD players, and the Xbox 360 gaming device. Microsoft PlaysForSure is a certification given by Microsoft to portable devices (portable media players, phones, etc. ... A Portable Media Center (PMC) is a hard drive-based portable media player device that can play digital video and audio files. ... The Xbox 360 is the successor to Microsofts Xbox video game console, developed in cooperation with IBM, ATI, Samsung and SiS. Information on the console first came through viral marketing campaigns and it was officially unveiled on MTV on May 12, 2005, with detailed launch and game information divulged...

It should be noted that the WMV 9 codec becomes Windows Media Video 9 Professional when both the following requirements are met:

• The video resolution exceeds 300,000 pixels (eg. 512 x 586)
• The video bit-rate exceeds 1000 kbit/s (eg. 1001 kbit/s)

Windows Media Video Professional

With the arrival of Windows Media 9 Series, Microsoft introduced a new brand name for the WMV 9 codec called Windows Media Video Professional (WMV Pro). It is the exact same codec as WMV 9, except that the video bit-rate and resolution both exceed 1000 kbit/s and 300,000 pixels, respectively. It is designed and optimized for encoding high-resolution video such as 720p, 1080p, and above. It competes mainly with MPEG-2 and MPEG-4 AVC/H.264. JOHN HERMAN SUCKS FAT DICK ... 1080p is the shorthand name for a category of video modes. ... MPEG-2 is a standard for the generic coding of moving pictures and associated audio information [1]. It is widely used around the world to specify the format of the digital television signals that are broadcast by terrestrial (over-the-air), cable, and direct broadcast satellite TV systems. ... H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ...

Any program that can play WMV 9 files can technically play WMV 9 Pro files. However, playback of 720p and 1080p content is CPU intensive, and frame-dropping may occur if only software decoding is available. Many video cards from leading manufacturers now offer hardware acceleration such as NVIDIA's PureVideo and ATI's Unified Video Decoder to help relieve the decoding process. In computing, hardware acceleration is the use of hardware to perform some function faster than is possible in software running on the normal (general purpose) CPU. Examples of hardware acceleration include blitting acceleration functionality in graphics processing units (GPUs) and instructions for complex operations in CPUs. ... NVIDIAs PureVideo is an MPEG-2 decoder designed to offload MPEG-2 decoding work from the CPU and software to NVIDIAs GPU series GeForce 6, GeForce 7, and enthusiast-class GeForce 8. ... The Unified Video Decoder, previously called Universal Video Decoder, or UVD in short, is the video decoding unit from ATI Technologies to support hardware decode of H.264 and VC-1 video codec standards, and being a part of AVIVO HD technology. ...

In 2004, Microsoft introduced yet another alternative name for the codec called Windows Media High Definition Video (WMV HD). WMV HD content are distributed on standard DVD discs and are playable on computers and compatible DVD players. Currently, all WMV HD DVD titles are encoded with WMA 9 Pro 5.1 surround sound tracks. Windows Media Video High Definition (WMV HD) is the marketing name for high definition videos encoded using Microsoft Windows Media Video 9 codecs. ... DVD (Digital Versatile Disc or Digital Video Disc) is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ... Multichannel audio is the name for a variety of techniques for expanding and enriching the sound of audio playback by recording additional sound channels that can be reproduced on additional speakers. ...

WMV Pro is becoming increasingly popular for online distribution of high-definition content. Websites such as Microsoft's Xbox Live, | Xbox.com and NVIDIA's GeForce demo[1] videos now feature WMV Pro content. Xbox Live is a subscription-based online gaming service for Microsofts Xbox and Xbox 360 video game consoles. ... In order to showcase the prowess of GeForce chipsets, NVIDIA creates technology demos that render in real-time on the chipsets in question (while videos are usually also made available). ...

Windows Media Video Advanced Profile

In 2003, Microsoft drafted a video codec specification based on its WMV 9 codec and submitted it to the Society of Motion Picture and Television Engineers (SMPTE) for standardization. The standard was officially approved in March 2006 as SMPTE 421M, better known as VC-1, thus making the WMV 9 codec an open but still proprietary standard. Windows Media Video Advanced Profile (WMV 9 AP) is currently Microsoft's implementation of the VC-1 codec. The Society of Motion Picture and Television Engineers or SMPTE (pronounced simptee or sometimes sumptee) is an international professional association, based in the United States of America, of engineers working in the motion imaging industries. ... VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ...

This newer codec provides new features and increased compression efficiency over WMV 9. Specifically, interlaced video content now have the same compression efficiency as progressive content with WMV 9. In addition, the codec is made transport-independent, and can be encapsulated in file formats other than WMV and ASF. Unlike WMV 9 Pro, WMV 9 AP does not have bit-rate or resolution requirements for its designation.

With the VC-1 codec being one of the three mandatory video codecs for the BD-ROM and HD DVD-ROM specifications, videos encoded with WMV 9 AP can be found in many Blu-Ray Disc and HD DVD titles. A recent firmware update to the Xbox 360 gaming device allows playback of WMV 9 AP content. In addition, WMV 9 AP is the preferred video codec for the Microsoft Silverlight platform. ... This article needs to be wikified. ... A blank rewritable Blu-ray disc (a BD-RE) A Blu-ray Disc (also called BD) is a high-density optical disc format for the storage of digital media, including high-definition video. ... HD-DVD disc HD DVD (for High Density Digital Versatile Disc) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data... The Xbox 360 is the successor to Microsofts Xbox video game console, developed in cooperation with IBM, ATI, Samsung and SiS. Information on the console first came through viral marketing campaigns and it was officially unveiled on MTV on May 12, 2005, with detailed launch and game information divulged... Microsoft Silverlight (code-named Windows Presentation Foundation/Everywhere or WPF/E) is a proprietary runtime for browser-based Rich Internet Applications, providing a subset of the animation, vector graphics, and video playback capabilities of Windows Presentation Foundation. ...

Windows Media Video Screen

Windows Media Video Screen (WMV Screen) is a screencast codec. The first version of the codec was WMV 7 Screen, the second and current version is WMV 9 Screen. The current version supports CBR and VBR encoding. The codec can capture live desktop videos, or convert AVI files created by third-party screen-capture programs into WMV 9 Screen files. It is mainly used for educational materials, such as computer step-by-step demonstration videos. A screencast is a digital recording of computer screen output, often containing audio narration. ...

Windows Media Video Image

Windows Media Video Image (WMV Image) is a new video codec introduced with Windows Media 9 Series. It is in essence a slideshow codec. The codec works by applying timing, panning and transition effects to a series of images at the decoder level during playback, in real-time. Because videos using this codec contain transformation triggers instead of full-frame videos, the codec achieves a high compression ratio and higher image quality compared to WMV 9 for still images. Slideshow is a modern concatenation of Slide Show. A slideshow is a display of a series of chosen images, which is done for artistic or instructional purposes. ... Panning, a horizontal motion in an image display or capture. ... Look up transformation in Wiktionary, the free dictionary. ...

Because the codec relies on the decoder (player) to render video "on-the-fly", decoding WMV Image files at 1024 x 768 resolution at smooth frame rates (eg. 30 frames per second) is CPU intensive, despite the moderate resolution. Frame rate, or frame frequency, is the measurement of the frequency (rate) at which an imaging device produces unique consecutive images called frames. ... Frame rate, or frame frequency, is the measurement of how quickly an imaging device can produce several consecutive images, called frames. ...

The latest version of the codec, WMV 9.1 Image, included with Photo Story 3, features additional transformation effects. It is not backward-compatible with the original WMV 9 Image codec. You may be looking for: Photo Story, a Windows XP software program by Microsoft, intended for making a slideshow. ...

Players

WMV files can be be played using Windows Media Player, PowerDVD, RealPlayer, MPlayer, VLC Media Player, Media Player Classic, and QuickTime with the relevant codecs installed. Many third-party players exist for various platforms such as Linux that use the FFmpeg implementation of the WMV codecs. Windows Media Player 7/8/9/10/11 can play all WMV formats via codec downloads. PlaysForSure-compliant devices, such as set-top DVD players, mobile phones, and portable video players, support WMV 9 files. Portable Media Centers and Microsoft's Zune portable players, can also play WMV 9 files. Windows Media Player (WMP) is a digital media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... PowerDVD is a media player software product available from CyberLink. ... RealPlayer, briefly known also as RealOne Player, is a cross-platform media player by RealNetworks that plays a number of multimedia formats including MP3, MPEG-4, QuickTime, Windows Media and multiple versions of proprietary RealAudio and RealVideo codecs. ... This article is about the open source media player. ... VLC media player is a free software (GPL) media player by the VideoLAN project. ... Media Player Classic (MPC) is a compact free software media player for Microsoft Windows. ... QuickTime is a multimedia framework developed by Apple Inc. ... Codec is a portmanteau of coder/decoder, which describes a device or program capable of performing transformations on a data stream or signal. ... Linux (IPA pronunciation: ) is a Unix-like computer operating system. ... FFmpeg is a collection of free software that can record, convert and stream digital audio and video. ... Microsoft PlaysForSure is a certification given by Microsoft to portable devices (portable media players, phones, etc. ... A Portable Media Center (PMC) is a hard drive-based portable media player device that can play digital video and audio files. ... Zune is the name of a brand of digital music services sold by Microsoft. ...

Encoders

Programs that create and encode WMV files include Windows Movie Maker and Adobe Premiere Pro. For more creative control, Windows Media Encoder offers encoding in all WMV format variants and bit-rate options, as well as pixel aspect ratio, color space, deinterlacing, and cropping adjustments. Microsoft Expression Media Encoder, another professional encoding tool, can encode VC-1 compliant content and distribute them using the Microsoft Silverlight platform. Windows Movie Maker is for gay people that is included in recent versions of Microsoft Windows. ... Adobe Premiere Pro, formerly known as Adobe Premiere, is a real-time, timeline based video editing software application. ... Windows Media Encoder is a production tool developed by Microsoft which enables content developers to convert both live and prerecorded audio, video, and computer screen images to Windows Media Format for live and on-demand delivery. ... The term pixel aspect ratio, sometimes shortened to aspect ratio, is also used in the context of computer graphics to describe the distribution of pixel in a digitized image. ... A comparison of different color spaces. ... Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Microsoft Expression Media Encoder is a program for managing digital media catalogs and assets. ... Microsoft Silverlight (code-named Windows Presentation Foundation/Everywhere or WPF/E) is a proprietary XAML-based runtime for browser-based Rich Internet Applications, providing a subset of the animation, vector graphics, and video playback capabilities of Windows Presentation Foundation. ...

Programs that encode files with the WMV Image codec include Windows Media Encoder and Photo Story. Windows Media Encoder is a production tool developed by Microsoft which enables content developers to convert both live and prerecorded audio, video, and computer screen images to Windows Media Format for live and on-demand delivery. ... You may be looking for: Photo Story, a Windows XP software program by Microsoft, intended for making a slideshow. ...

Video quality

Microsoft initially claimed that WMV 9 provided a 15 to 50 percent improvement in compression efficiency over WMV 8.1[2]. Microsoft also claims that WMV 9 AP provides a compression ratio of 3:1 compared to MPEG-2[3].

Some comparative test results include:

• German's C'T Magazine found that VC-1 outperformed H.264 and MPEG-2 in high-definition video tests [4]

VC-1

Main article: VC-1

WMV version 9 has been standardized as an independent SMPTE standard (421M, also known as VC-1). Although Windows Media Video is based on MPEG-4, since version 7, it has had consistent proprietary development and therefore it is reasonable to believe that WMV has sufficiently evolved in a different direction than MPEG-4 to be considered a unique codec in its own right. ^[3] There are currently (April 2006) 16 companies in the VC-1 patent pool. Microsoft is also one of the members of the MPEG-4 AVC/H.264 patent pool. VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ...

The video stream is often combined with an audio stream of Windows Media Audio and encapsulated in Advanced Systems Format files, carrying the .WMV or .ASF file extensions. Windows Media Audio (WMA) is brand name for several technically distinct proprietary compressed audio file formats developed by Microsoft. ... Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ...

Versions

The latest versions of the codecs, including the VC-1 compliant Advanced Profile version, are installed by Windows Media Player 11 or Windows Media Format 11 SDK on Windows XP. They are also built into Windows Vista. Some older codec versions may not be available on Windows XP SP2 and later Windows versions. The available codec versions on a system can be viewed using the Windows Media Profile Editor, which is installed with Windows Media Encoder 9 Series. A FOURCC (literally, four character code) is a sequence of four bytes used to uniquely identify data formats. ... MPEG-4 is a standard used primarily to compress audio and visual (AV) digital data. ... Video for Windows was a multimedia technology developed by Microsoft that allowed Microsoft Windows to play digital video. ... MPEG-4 is a standard used primarily to compress audio and visual (AV) digital data. ... Video for Windows was a multimedia technology developed by Microsoft that allowed Microsoft Windows to play digital video. ... MPEG-4 is a standard used primarily to compress audio and visual (AV) digital data. ... Video for Windows was a multimedia technology developed by Microsoft that allowed Microsoft Windows to play digital video. ... // Audio-Video Interleaved, known by its acronym AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows technology. ... MPEG-4 is a standard used primarily to compress audio and visual (AV) digital data. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... MPEG-4 is a standard used primarily to compress audio and visual (AV) digital data. ... MPEG-4 Part 2 is a video compression technology developed by MPEG. It belongs to the MPEG-4 ISO/IEC standard (ISO/IEC 14496-2). ... MPEG-4 is a standard used primarily to compress audio and visual (AV) digital data. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... A screencast is a digital recording of computer screen output, often containing audio narration. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... Video for Windows was a multimedia technology developed by Microsoft that allowed Microsoft Windows to play digital video. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... A screencast is a digital recording of computer screen output, often containing audio narration. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... You may be looking for: Photo Story, a Windows XP software program by Microsoft, intended for making a slideshow. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... You may be looking for: Photo Story, a Windows XP software program by Microsoft, intended for making a slideshow. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... Video for Windows was a multimedia technology developed by Microsoft that allowed Microsoft Windows to play digital video. ... VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... DirectX Media Objects (DMOs) are COM-based data-streaming components. ... VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... Windows Media Player (WMP) is a digital media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... Windows Vista is a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, Tablet PCs, and media centers. ... Windows Media Encoder is a production tool developed by Microsoft which enables content developers to convert both live and prerecorded audio, video, and computer screen images to Windows Media Format for live and on-demand delivery. ...

See also

• VC-1 - The SMPTE codec standard based on WMV 9 but expanded to support video and broadcast industry requirements.
• Windows Media Audio
• MPlayer - A third-party open source cross-platform media player capable of playing many WMV files using FFmpeg.
• FFmpeg - A third-party cross-platform free software codec library which implements WMV and VC-1 among other formats.
• HD Photo (formerly Windows Media Photo)
• WMV Player - A third-party commercial codec which allows viewing of WMV files in QuickTime for Mac OS X.
• Flip4Mac - QuickTime component to play and encode Windows Media files in QuickTime (Mac OS X)
• Windows Movie Maker - A video editing tool included with Windows XP.
• Windows Media DRM - A Digital Rights Management component of Windows Media technologies commonly associated with the WMV format that restricts the user's rights of accessing his media content.
• WMV HD - the marketing name for high definition videos encoded using Microsoft Windows Media Video 9 codecs.

VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... Windows Media Audio (WMA) is brand name for several technically distinct proprietary compressed audio file formats developed by Microsoft. ... This article is about the open source media player. ... FFmpeg is a collection of free software that can record, convert and stream digital audio and video. ... HD Photo (formerly Windows Media Photo) is a still image compression algorithm and file format for continuous tone photographic images, developed by Microsoft as a part of the Windows Media family. ... The WMV Player is one of the few commercial products that allow playback of Microsofts proprietary audio and video codecs directly in the QuickTime Player for Mac OS X. It allows playback of: Windows Media Video 7, 8, 9 SD and HD Windows Media Audio 7, 8, 9 Professional... QuickTime is a multimedia framework developed by Apple Inc. ... Mac OS X (official IPA pronunciation: ) is a line of proprietary, graphical operating systems developed, marketed, and sold by Apple Inc. ... Flip4Mac is a trademarked brand name for Telestream, Inc. ... Mac OS X (official IPA pronunciation: ) is a line of proprietary, graphical operating systems developed, marketed, and sold by Apple Inc. ... Windows Movie Maker is for gay people that is included in recent versions of Microsoft Windows. ... Windows XP is a line of operating systems developed by Microsoft for use on general-purpose computer systems, including home and business desktops, notebook computers, and media centers. ... Windows Media DRM is a Digital Rights Management service for the Windows Media platform. ... Digital rights management (DRM) is an umbrella term referring to technologies used by publishers or copyright owners to control access to or usage of digital data or hardware, and to restrictions associated with a specific instance of a digital work or device. ... Windows Media is a multimedia framework for media creation and distribution for Microsoft Windows. ... Windows Media Video (WMV) is a generic name for the set of streaming video technologies developed by Microsoft. ... Windows Media Video High Definition (WMV HD) is the marketing name for high definition videos encoded using Microsoft Windows Media Video 9 codecs. ...

References

1. ^ Microsoft Windows Media - Demos Video Quality
2. ^ streamingmedia.com Best Practices for Windows Media Encoding
3. ^ MPEG-4 makes the scene

External links

• Windows Media Homepage at Microsoft
• Description of the algorithm used for Windows Media encryption
• WMV HD Content Showcase