ISO/IEC 21000-8:2008/Amd 4:2018
信息技术 多媒体框架(MPEG-21) 第8部分:参考软件 修改件4:时间段和多轨音频的媒体价值链本体扩展
Information technology — Multimedia framework (MPEG-21) — Part 8: Reference software — Amendment 4: Media value chain ontology extensions on time-segments and multi-track audio