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     Online Glossary of WMV HD Terms

 

   Online Glossary of WMV HD Terms

Windows Media High Definition Video (WMV HD) is the marketing name for high definition videos encoded using Microsoft Windows Media Video 9 codecs. These low-complexity codecs make it possible to watch high definition movies in 1280x720 (720p) or 1920x1080 (1080p) resolutions on many modern personal computers running Microsoft Windows XP or Windows Vista, although the hardware requirements are steep. Microsoft's Xbox 360 and Sony's Playstation 3 video game consoles can also play WMV HD.

WMV HD is not a standalone video codec nor a special modification of the WMV9 codec. As of April 2006, all existing WMV HD titles are encoded using the VC-1 compliant Windows Media Video 9 (FourCC: WMV3) codec conforming to VC-1 Main Profile @ High Level specification. It is possible that in the future Microsoft will take advantage of the new VC-1 Advanced Profile codec dubbed Windows Media Video Advanced Profile (FourCC: WVC1) to encode WMV HD videos.

A number of WMV9-encoded high definition movie titles have been made commercially available on DVD-ROM discs, either as standalone discs or supplements to the regular DVD-Video titles. The technology was considered a stepping stone to true high definition optical disc formats (HD DVD and Blu-ray Disc) and Microsoft never intended the discs to be played on anything but personal computers. Most commercially sold WMV HD titles are copy protected using Microsoft Windows Media DRM technology. The licensing terms of DRM protected titles are determined by the content providers and not Microsoft Corporation. The soundtracks are commonly encoded using the Windows Media Audio Professional codec, often featuring 5.1 or 7.1 multichannel sound. The video and audio streams are encapsulated in Advanced Systems Format files.

 

Compatibility

WMV HD has been touted for its ease of use, since functionality to convert to WMV HD has been built into Windows Movie Maker, it has allowed people to convert their home videos to WMV HD as well as commercial releases they may have received. The file system will work on a PC with the settings listed below, as well as a Xbox 360, at 1080p/1080i.

 

Futures

WMV HD is just one of many HD-raw formats. Others include NeroDigital HD, DivX_HD, and XviD as codec formats. There are also media formats that use a single or selection of files on a disc (without folders and trees) including WMV Disc, HVD and the abandoned JavaDisc format among others. All have their own fan-base and no single format has pushed out to the front.

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