信息技术.多媒体框架(MPEG-21).第9部分:文件格式

[中文适用范围]： 该国际标准指定了 MPEG-21 文件格式，其中 MPEG-21 XML 文档（例如数字项目声明 (DID)）及其部分或全部引用内容可以放置在单个“内容包”文件中。 这使得 MPEG-21 文档能够交换、编辑和“播放”。 [外文原描述]： ISO/IEC 21000-9:2005, the MPEG-21 File Format, defines an open framework for multimedia delivery and consumption, with both the content creator and content consumer as focal points. The vision for MPEG-21 is to define a multimedia framework to enable transparent and augmented use of multimedia resources across a wide range of networks and devices used by different communities. ISO/IEC 21000-9:2005 is designed to contain a base MPEG-21 XML document with some or all of its ancillary resources, potentially in a single package. It forms part of a family of specifications which are box-structured, and is built using tools from the ISO Base Media File Format ISO/IEC 14496-12 (technically identical to 15444-12), specifically those that provide the unified structural approach to both static meta-data (untimed meta-data) and MPEG-21 integrated document handling.