信息技术 沉浸式媒体的编码表示 第27部分：基于渲染系统的媒体和架构

[中文适用范围]： 本文件提供了上下文、动机和用例描述，用于一组移动图像专家组（MPEG）标准，这些标准共同将媒体直接交付给基于渲染的应用程序，如具有渲染器组件的游戏引擎或独立渲染器。新兴的例子包括元宇宙应用和沉浸式显示器，这些显示器提供了与渲染器的接口。 本文件： - 描述了导致开发新MPEG标准的动机，这些标准促进了媒体流向基于渲染的应用程序； - 区分了为基于视频的应用程序分发的视觉媒体和为基于渲染的应用程序分发的视觉媒体； - 提供了从内容生产到内容分发的媒体工作流程概述； - 提供了有关基于渲染的系统（包括游戏引擎和渲染器）相关组件的一般信息； - 识别了构成一组异构沉浸式显示器和其他基于渲染的应用程序的关键组件和资源（计算、存储或网络）； - 记录了端到端互操作性的用例，包括基于渲染的系统和应用程序的音频、视频、图形和系统方面。 [外文原描述]： This document provides context, motivation and use case descriptions for a set of Moving Picture Experts Group (MPEG) standards that collectively deliver media directly to render-based applications such as game engines with a renderer component, or standalone renderers. Emerging examples where such applications are especially relevant include metaverse applications and immersive displays where such displays provide an interface to renderers. This document: — describes the motivators leading to the development of new MPEG standards that facilitate the streaming of media to render-based applications; — differentiates between visual media distributed for video-based applications and visual media distributed to render-based applications; — provides an overview of a media workflow from content production to content distribution; — provides general information on relevant components of render-based systems including game engines and renderers — identifies key components and resources (compute, storage, or network) comprising a heterogeneous set of immersive displays and other render-based applications; — and documents use cases for end-to-end interoperability, including audio, video, graphics and systems aspects for render-based systems and applications.