摘要
社交媒体和移动服务的增长以及客户端设备的多样性大大增加了媒体服务器的存储成本和网络流量。针对多码率视频点播服务(VOD)提出了一个能耗低、存储高效的HTTP直播流媒体服务器(HLS)。该媒体服务器考查用户的视频模式,利用实时转码提供高效的存储空间管理。实验结果表明,与之前的HLS服务器相比,文中提出的服务器存储效率更高。当用户请求的媒体质量的分布是正态分布时,该HLS服务器能减少25%的存储空间;当分布是帕累托分布时,存储空间能减少30%。提高存储效率同样也会提高功率效率,此HLS服务器的功耗能降低9.9%。
The growth of social media and mobile services,and the diversity of client devices have greatly increased media servers＇ storage costs and network traffic.This paper introduces an HTTP live streaming（ HLS） media server for multi-bitrate video on-demand（ VOD） services that is efficient in terms of power consumption and storage space.The media server takes the user＇s video streaming pattern into consideration and exploits real-time transcoding to provide efficient storage space management.The experimental results show that the storage of the proposed server is more efficient than the previous HLS servers.When the distribution of video qualities requested by users is in the form of a normal distribution,this proposed HLS server can reduce 25% of the storage space,while the distribution is pareto distribution,storage space can be reduced by 30%.Improving storage efficiency will also increase power efficiency,and the HLS server will reduce the required power consumption by 9.9%.
出处
《微型机与应用》
2017年第23期41-43,共3页
Microcomputer & Its Applications
