SMPTE releases VC-1 Standard document

The Society of Motion Picture and Television Engineers has announced the release of its much anticipated Standard for Compressed Video Bitstreams.
Release of the VC-1 document, along with supporting Recommended Practices, will guide companies in building interoperable solutions using advanced compression technology.
“Standardization of VC-1 represents over two years of work by more that 120 individuals representing over 75 media and entertainment companies,” said Ingo Höntsch, Chair of SMPTE’s Video Compression Technology Committee, which oversaw development of the VC-1 standard. “And many companies throughout the industry have been promoting VC-1 integration for some time now.”
Peter Symes, who as SMPTE Engineering Vice President oversaw the development of the Standard, added: “Formal standardization of VC-1 provides stability for manufacturers and allows for a high level of confidence that users can interchange bitstreams between products from different manufacturers. The work was contentious at times, and initially some people thought that SMPTE would just ‘rubber stamp’ the Microsoft document. In fact, many individuals and organizations contributed to the final documents over the two-year development period. Significantly, SMPTE has now been chosen as the organization to standardise two new compression systems.”
Formal standardisation was proposed by Microsoft Corporation, who contributed decoder source code and other resources towards development of the process.
Mike Dolan of Television Broadcast Technology (TBT), who chaired the main ad hoc committee, said: “The SMPTE VC-1 standard went through a very rigorous and formal open due process procedure involving committee members from all segments of the Media, Entertainment and Computer industries.
”This process has resulted in a clear, comprehensive and completely open standard for development of compressed video bitstreams.”
SMPTE’s Compression Technology Committee has also formed a new Working Group dedicated to providing maintenance of the test materials and documents, as well as the administration of a bitstream exchange program. Microsoft has contributed source code for an example encoder that is available to committee members participating in this programme.
The VC-1 documents are SMPTE 421M-2006, “VC-1 Compressed Video Bitstream Format and Decoding Process” - the Standard itself, as well as two supporting Recommended Practices, SMPTE RP227-2006 “VC-1 Bitstream Transport Encodings” and SMPTE RP228-2006 “VC-1 Decoder and Bitstream Conformance”.
All three documents can be purchased on the SMPTE website at www.smpte.org.
(GB)