Editing VC-1 (section)

===WMV3===
The Simple and Main Profiles of VC-1 remained completely faithful to the existing WMV3 implementation, making WMV3 bitstreams fully VC-1 compliant.
The WMV3 codec was designed to primarily support progressive encoding for computer displays. An interlaced encoding mode was implemented, but quickly became deprecated when Microsoft started implementing WMV Advanced Profile. Whereas WMV3 progressive encoding was implemented using the [[YUV 4:2:0]] color sampling scheme, the deprecated interlaced mode was implemented using the less common [[YUV 4:1:1]] sampling scheme.

The [[Windows Media Video]] 9 (WMV3) codec implements the Simple and Main modes of the VC-1 codec standard, providing high-quality video for streaming and downloading. "It provides support for a wide range of bit rates, from high-definition content at one-half to one-third the bit rate of MPEG-2, to low-bit-rate Internet video delivered over a dial-up modem. This codec also supports professional-quality downloadable video with two-pass and variable bit rate (VBR) encoding."<ref name=MSDN-WMC>{{cite web|title=About the Windows Media Codecs|url=http://msdn.microsoft.com/en-us/library/windows/desktop/gg153556(v=vs.85).aspx|work=Microsoft Developer Network|publisher=Microsoft|access-date=28 April 2014}}</ref>

A number of high definition movies and videos have been released commercially in a format dubbed [[WMV HD]]. These titles are encoded with WMV3 Main Profile @ High Level (MP@HL).