Vc-1

VC-1

SMPTE 421M, informally known as VC-1, which was initially developed as a proprietary video format by Microsoft, was released as a SMPTE video codec standard on April 3, 2006. It is today a supported standard found in Blu-ray Discs, Windows Media, Microsoft's Silverlight framework, Slingbox, and the now-discontinued HD DVD.