Windows Media Video Player
I think Windows Media Video (WMV) is a generic name for the set of video codec technologies developed by Microsoft. It is part of the Windows Media framework. The codecs were originally developed as proprietary codecs for low-bitrate streaming applications. However, in 2003 Microsoft drafted a video codec specification based on its Windows Media Video version 9 codec and submitted it to SMPTE for standardization. The standard was officially approved in March 2006 as SMPTE 421M, thus making the Windows Media Video 9 codec no longer a proprietary technology. Earlier versions of the codec (7 and 8) are still considered proprietary as they fall outside the SMPTE 421M standard.
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