信息技术.MPEG视频技术.第7部分:编码视频比特流的通用补充增强信息报文

[中文适用范围]： 本文件规范视频可用性信息（VUI）参数和补充增强信息（SEI）消息的语义和句法规则。本文件中定义的VUI参数和SEI消息旨在通过符合视频编码规范的已编码视频比特流进行传送，或以使用此类已编码视频比特流的系统规范所确定的其他方式传送。本文件特别适用于根据ITU-T H.266 | ISO/IEC 23090-3推荐的编解码器指定的已编码视频比特流，尽管它是以通用格式起草的，以便也可以与其他类型的已编码视频比特流一起使用。VUI参数和SEI消息有助于与解码、显示或其他用途相关的流程。除非在引用规范中另有规定，否则对本文件中指定的VUI参数和SEI消息的解释和使用不是视频解码器或接收视频系统的必备功能。尽管为VUI参数和SEI消息指定了语义，但解码器和接收视频系统可以忽略VUI参数和SEI消息的内容，或者以与本文件中所规定的方式有所不同地使用它们。 [外文原描述]： This document specifies the syntax and semantics of video usability information (VUI) parameters and supplemental enhancement information (SEI) messages. The VUI parameters and SEI messages defined in this document are designed to be conveyed within coded video bitstreams in a manner specified in a video coding specification or to be conveyed by other means determined by the specifications for systems that make use of such coded video bitstreams. This document is particularly intended for use with coded video bitstreams as specified by Rec. ITU-T H.266 | ISO/IEC 23090-3, although it is drafted in a manner intended to be sufficiently generic that it can also be used with other types of coded video bitstreams. VUI parameters and SEI messages can assist in processes related to decoding, display or other purposes. However, unless otherwise specified in a referencing specification, the interpretation and use of the VUI parameters and SEI messages specified in this document is not a required functionality of a video decoder or receiving video system. Although semantics are specified for the VUI parameters and SEI messages, decoders and receiving video systems can simply ignore the content of the VUI parameters and SEI messages or can use them in a manner that somewhat differs from what is specified in this document.