中文摘要：

集群驱动的多投影视频播放系统能够提供大尺寸、高分辨率的显示画面，在展览展示领域得到广泛应用。虽然许多研究讨论了如何构建集群驱动的视频播放系统，但高可靠性却一直被忽略。当硬件或软件发生异常时，已有视频播放系统难以正常工作。基于对集群驱动的视频播放系统可靠性分析，提出一种面向多投影视频播放的系统架构与集群管理。系统由集群驱动，包含一个Master节点和多个Slave节点，节点身份在启动阶段动态确定。系统采用帧同步刷新策略，保证各个节点同步播放相同序列号视频帧。Master节点负责集群自主管理，Master节点能迅速检测到陷入失效状态的和从异常状态中恢复的Slave节点，并进行相应的处理，实现容错性与可恢复性。采用上述技术构建的多投影视频播放系统已成功应用于2010年上海世博会世博会博物馆。

英文摘要：

Video player systems for multi-projector display are commonly driven by PC clusters. They are widely employed in field of exhibition since they are suitable for displaying large-scale and high-resolution images. Since a number of research efforts focus on constructing video player systems driven by PC Clusters, high reliability is still overlooked. Existing video player systems are not able to keep effective when hardware or software exception happens. Based on analyzing reliability requirement of video player driven by PC cluster, this paper proposes one architecture of cluster-based video playing and management system for multi-projector display. The video player system driven by cluster consists of one Master node and multiple Slave nodes. Identity of each node is determined in booting time. Synchronization mechanism is carried out to guarantee that each node playing the same video frame. Master node is responsible for cluster management. Since Slave node being unavailable or recovered from exception can be quickly detected and handled by Master node, fault tolerance and recoverability are achieved. The video player system implementing the aforementioned technologies ~as adopted by World Expo Museum in Shanghai Expo 2010.