SMPTE 421, [2] informally known as VC-1, is a video coding format. Most of it was initially developed as Microsoft's proprietary video format Windows Media Video 9 in 2003. With some enhancements including the development of a new Advanced Profile, it was officially approved as an SMPTE standard on April 3, 2006.

H.264 and VC-1 are popular video compression standards gaining use in the industry as of 2007.

(Video Codec-1) An SMPTE standard for compressing digital video, introduced in 2006. Officially known as SMPTE 421M, Blu-ray, HD DVD, Xbox 360 and Windows Vista were the first products to...

2006年11月19日 · VC-1 Agorithm allows for variable size and shape of DCT encoding block size making encoding potentially much more efficient based upon source. VC-1 Decoding is much less processor intensive than h.264 on general purpose processors.

2024年11月30日 · VC-1, formally known as SMPTE 421M, is a video coding format that was initially developed by Microsoft. It evolved from Microsoft’s earlier video codecs to become a standardized format for encoding digital video, holding its ground alongside other well-known codecs like H.264 and MPEG-4.

SMPTE 421, informally known as VC-1, is a video coding format. Most of it was initially developed as Microsoft's proprietary video format Windows Media Video 9 ...

process used in the VC-1 video decoder. It defines the bitstream syntax, semantics and constraints for compressed video bitstreams and describes the complete process required to decode them. VC-1, as defined in this document, consists of three profiles: Simple, Main, and Advanced. Simple and Main

2013年1月1日 · VC-1 is an evolution of the conventional DCT-based video codec design also found in H.261 [S4], H.263 [S6], MPEG-1 [S2], MPEG-2 [S3] and MPEG-4 [S10]. It is widely characterized as an alternative to the latest ITU-T and MPEG video codec standard known as H.264/MPEG-4 AVC [S10].

2007年10月22日 · VC-1 is one of the three video compression algorithms standardized for high definition DVD. With high definition DVD players expecting to support MPEG-2, H.264, and VC-1, end users do not have to be concerned about the coding formats.

VC-1 is a state-of-the-art video compression format that provides highly competitive video quality, from very low through very high bit rates, at reasonable computational complexity.