Abstract: By studying several key characteristics of Internet Protocal Television(IPTV) large concurrency applications, a media file format named cl4 is proposed. In order to work well in IPTV large concurrency applications, this file format uses several media indexing and storage strategies, including video/audio mixture storage and block-level media storage. An IPTV server using cl4 file format is designed and implemented. Detailed performance evaluation and test results demonstrate that IPTV server can work more efficiently by using cl4 file format.

Key words: Internet Protocal Television(IPTV), large concurrency, file format

摘要： 分析交互式网络电视(IPTV)大并发应用的特性，提出一种适用于IPTV大并发应用的服务器内部文件格式cl4文件格式。该文件格式采用了符合IPTV大并发应用特性的音视频数据交织、媒体数据块状存储等组织策略。设计并实现了一种基于cl4文件格式的IPTV服务器。性能对比实验数据表明，使用cl4文件格式能够使IPTV服务器拥有更优的并发性能。

关键词: 交互式网络电视, 大并发, 文件格式

CLC Number: 

• TN949.292