![]() ![]() Microsoft claims that WMV 9 provides a compression ratio that is two times better than MPEG-4, and three times better than MPEG-2 Microsoft also claims that WMV 9 is 15–50% better than WMV 8 in terms of compression efficiency One test report published in January 2005, however, showed that WMV 9 had worse compression efficiency than WMV 8. WMV can be stored in an AVI file when using the WMV 9 Video Compression Manager (VCM) codec implementation. ![]() WMV typically describes ASF files that use Windows Media Video codecs.Īlthough WMV is generally packed into the ASF container format, it can also be put into the AVI or Matroska container format. A WMV file is in most circumstances encapsulated in the Advanced Systems Format (ASF) container format. Windows Media Video ( WMV) is a compressed video file format for several proprietary codecs developed by Microsoft.
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