多媒体同步是分布多媒体应用的一个重要需求。本文从时间相关媒体入手，就多媒体同步的多样性、同步特性、同步服务质量参数、同步时间概念模型以及同步关系的同象和描述等方面予以较全面的分析和阐述。

Multimedia synchronization is a significant requirement for distributed multimedia applications. Beginning with time-dependent media, many aspects are studied comprehensively in this paper, such as the multiformity of multimedia synchronization, synchronization characteristics of multimedia, quality of service for synchronization purposes, the conceptual time models for multimedia synchronization, the abstraction and description for the temporal relations of multimedia synchronization.