关键词:  直播服务器, 速率控制, 差错控制, 质量自适应, 缓冲区控制

Abstract:

 In this paper such a general architecture was presented based on Rejaie’s work on the architecture of media streaming servers, which took into consideration the functions and characteristics of live streaming servers, and incorporated the impacts of fluctuant network environment on them. In this architecture, four function modules, namely Rate Control Module, Error Control Module, Video Quality Adaptation Module and Buffer Control Module, comprise the whole server. These modules respectively perform specific tasks, and collaborate to enable the whole server systems to provide adaptive video streaming services as a whole. How they can interplay and cooperate was discussed thoroughly in this paper. This architecture presented in the paper can be flexibly configured according to specific needs of particular applications, and can be helpful to development of live streaming server systems.

Key words: live streaming server, rate control, error control, video quality adaptation, buffer control