ISO/IEC 14496的本部分规定了ISO/IEC 14496的交付层，允许应用程序 透明地访问和查看多媒体流，无论流的源是否位于交互式网络上 在远程终端系统中，流可以在广播媒体上使用，也可以在存储媒体上使用。 ISO/IEC 14496的本部分涵盖以下方面: DMIF通信体系结构 DMIF应用程序接口（DAI）定义 URL语义用于定位并提供多媒体流 用于远程交互场景的DMIF默认信令协议（DDSP）及其使用现有 本机网络信令协议 用于播放器访问远程交互终端系统上的流的信息流，来自广播媒体或 存储介质

This part of ISO/IEC 14496 specifies the Delivery Layer of ISO/IEC 14496, which allows applications to transparently access and view multimedia streams whether the source of the streams is located on an interactive remote end-system, the streams are available on broadcast media or they are on storage media. In this part of ISO/IEC 14496, the following aspects are covered: DMIF communication architecture DMIF-Application Interface (DAI) definition URL semantic to locate and make available the multimedia streams DMIF Default Signalling Protocol (DDSP) for remote interactive scenarios, and its related variations using existing native network signaling protocols Information flows for player access to streams on remote interactive end-systems, from broadcast media or from storage media