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Windows Media Video
Windows Media Video (WMV) is a file type which can contain video in one of several video compression formats developed by Microsoft. The original video compression format used in the file, also known as ''WMV'', was originally designed for Internet streaming applications, as a competitor to RealVideo. The other compression formats, such as ''WMV Screen'' and ''WMV Image'', cater for specialized content. After standardization by the Society of Motion Picture and Television Engineers (SMPTE),〔(SMPTE VC-1 Receiving Industrywide Support )〕〔(Microsoft VC-1 Codec Now a Standard )〕 WMV 9 was adopted for physical-delivery formats such as HD DVD and Blu-ray Disc.〔(Blu-ray Disc BD-ROM Specification Adds Microsoft's VC-1 Advanced Video Codec )〕〔(Microsoft Technology Brings HD DVD to the Mainstream )〕
==History==
In 2003, Microsoft drafted a video compression specification based on its WMV 9 format and submitted it to SMPTE for standardization. The standard was officially approved in March 2006 as SMPTE 421M, better known as VC-1, thus making the WMV 9 format an open standard. VC-1 became one of the three video formats for the Blu-ray video disc, along with H.262/MPEG-2 Part 2 and H.264/MPEG-4 AVC.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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