标准摘要
[中文适用范围]： 本文档规定了实时分段媒体 (REaP) 的冗余编码和打包格式。本文档规定了：a) 可互换实时媒体摄取和流公告的格式；b) 生成可互换分段的格式和分段策略；c) 生成可互换媒体演示描述或播放列表的格式；d) 实时分段媒体的高效云存储访问和存档格式；e) 用于在编码器和打包器之间传递媒体描述符文件和分段媒体的协议。REaP 可实现以下功能：1) 支持故障转移并重新加入工作流中的分布式组件（参见附件 E）；2) 具有决策系统的动态广告插入 (DA1) 实时工作流；3) 具有数字版权管理 (DRM) 和内容保护的工作流；4) 混合文件和实时输入。本文档规定了对 ISO/IEC 14496-12、ISO/IEC 23009-1、ISO/IEC 23000-19 和 IETF RFC 8216 中定义的格式的附加约束。 [外文原描述]： This document specifies formats for redundant encoding and packaging of live segmented media (REaP). This document specifies: a) formats for Interchangeable Live Media Ingest and stream announcement; b) format and segmentation strategy to generate interchangeable segments; c) formats for generating interchangeable media presentation descriptions or playlists; d) formats for efficient cloud storage access and archiving of live segmented media. e) a protocol for communicating media descriptor files and fragmented media between encoders and packagers. REaP enables the following: 1) failover support and rejoining of distributed components in the workflow (see Annex E); 2) workflows for live with dynamic ad insertion (DAI) with a decisioning system. 3) workflows with digital rights management (DRM) and content protection. 4) Mixing file and live inputs. This document specifies additional constraint to formats defined in ISO/IEC 14496-12, ISO/IEC 23009-1, ISO/IEC 23000-19 and IETF RFC 8216.
英文名称Information technology - Dynamic adaptive streaming over HTTP (DASH) - Part 9: Redundant encoding and packaging for segmented live media (REaP)