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SMPTE ST 421

VC-1 Compressed Video Bitstream Format and Decoding Process — Amendment 2

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Organization: SMPTE
Publication Date: 30 March 2011
Status: active
Page Count: 493
scope:

This document defines the bitstream syntax and semantics for compressed video data in VC-1 format, and specifies constraints that are required for conformant bitstreams. It also describes the complete process required to decode the bitstream. The compression algorithm is not specified in this standard. The video formats supported by VC-1 include progressive and interlaced video sampled in the form of Y luma samples and Cb, Cr color-difference in 8-bit per component sample values resulting from a 4:2:0 sampling grid. The decoding process outputs 8-bit per component video samples corresponding to the original 4:2:0 sampling grid. The display rendering process by which decoded Y, Cb, Cr samples are converted to a visible image or to a video output signal in a complete decoding system or device are not specified in VC-1. A VC-1 bitstream may convey additional metadata and user data which shall be accounted for in the buffer model. Metadata included in VC-1 streams is not used by the decoding process, but is passed to the display rendering process for the identification and reconstruction of the sampled video format, sample aspect ratio, color space, etc.

Document History

SMPTE ST 421
March 30, 2011
VC-1 Compressed Video Bitstream Format and Decoding Process — Amendment 2
This document defines the bitstream syntax and semantics for compressed video data in VC-1 format, and specifies constraints that are required for conformant bitstreams. It also describes the...
March 30, 2011
VC-1 Compressed Video Bitstream Format and Decoding Process — Amendment 2
This purpose of this amendment is to correct typographical errors and provide clarifying text to support correct interpretation of the standard.
November 29, 2007
VC-1 Compressed Video Bitstream Format and Decoding Process — Amendment 1
A description is not available for this item.
February 24, 2006
VC-1 Compressed Video Bitstream Format and Decoding Process
A description is not available for this item.

References

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