具有广告插播功能的基于P2P补偿的视频点播系统的研究与设计
发布时间：2018-10-15 20:23
【摘要】：多媒体通信以及娱乐已经越来越成为人们生活中不可分割的一部分。在过去的几年中,视频点播(Video-on-Demand)服务引起了广泛的关注,并日益成为人们在互联网上最流行的活动之一。与其他形式的互联网应用相比,视频点播服务往往需要支持大规模的并发在线用户,并且需要占用大量的网络带宽。在另一方面,对等网络(P2P)技术迅猛发展,能够增强系统的扩展性并可支持来自世界各地的数以万计的用户。 P2P技术可以被应用到视频点播系统中,从而达到增强系统性能及可扩展性的目的。由于视频点播系统中每个节目／视频都有一定数量的观看用户,这些节点可以通过共享缓冲区数据来减轻服务器的数据负担,并一定程度的加快数据下载速度。 本文通过对P2P技术在流媒体网络中的应用进行研究,设计了一个基于P2P补偿的视频点播服务系统。在系统的客户端缓存模块中,本文将客户的VCR操作作为评价缓存数据重要程度的依据。通过记录用户在系统中的VCR行为,可以挖掘出媒体数据块之间的关联关系,增加前后有关联的媒体数据块的重要度,而减少无关联的媒体数据块的重要程度,从而为缓存替换算法找到了替换依据。 此外,本文考虑到系统的商业价值,在P2P补偿的视频点播基础上,为系统加入了广告插播功能。为了提高广告插播的用户接受度与播放效果,本文就广告的内容描述做了分析,并最终使用了一种基于自然模糊语言的广告内容描述方法,从而可以提高广告相关度计算的操作性。
[Abstract]:Multimedia communication and entertainment have become an integral part of people's lives. Video on demand (Video-on-Demand) services have attracted wide attention in the past few years and become one of the most popular activities on the Internet. Compared with other forms of Internet applications, VOD services often need to support large-scale concurrent online users and take up a large amount of network bandwidth. On the other hand, peer-to-peer network (P2P) technology has developed rapidly, which can enhance the scalability of the system and support tens of thousands of users from all over the world. P2P technology can be applied to video-on-demand systems. In order to enhance the performance and scalability of the system. Since each program / video in VOD system has a certain number of users, these nodes can reduce the data burden of the server by sharing buffer data, and speed up the data download to a certain extent. In this paper, the application of P2P technology in streaming media network is studied, and a VOD service system based on P2P compensation is designed. In the client cache module, this paper takes the VCR operation of the client as the basis for evaluating the importance of cache data. By recording the user's VCR behavior in the system, we can mine the correlation relationship between the media data blocks, increase the importance of the related media data blocks before and after, and reduce the importance of the uncorrelated media data blocks. Thus, the replacement basis for cache replacement algorithm is found. In addition, considering the commercial value of the system, based on P2P compensated VOD, this paper adds the advertising plugging function to the system. In order to improve the user acceptance and broadcast effect of advertising, this paper analyzes the content description of advertisement, and finally uses a method of advertising content description based on natural fuzzy language. Thus it can improve the maneuverability of advertisement correlation calculation.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN948.64
本文编号：2273733
[Abstract]:Multimedia communication and entertainment have become an integral part of people's lives. Video on demand (Video-on-Demand) services have attracted wide attention in the past few years and become one of the most popular activities on the Internet. Compared with other forms of Internet applications, VOD services often need to support large-scale concurrent online users and take up a large amount of network bandwidth. On the other hand, peer-to-peer network (P2P) technology has developed rapidly, which can enhance the scalability of the system and support tens of thousands of users from all over the world. P2P technology can be applied to video-on-demand systems. In order to enhance the performance and scalability of the system. Since each program / video in VOD system has a certain number of users, these nodes can reduce the data burden of the server by sharing buffer data, and speed up the data download to a certain extent. In this paper, the application of P2P technology in streaming media network is studied, and a VOD service system based on P2P compensation is designed. In the client cache module, this paper takes the VCR operation of the client as the basis for evaluating the importance of cache data. By recording the user's VCR behavior in the system, we can mine the correlation relationship between the media data blocks, increase the importance of the related media data blocks before and after, and reduce the importance of the uncorrelated media data blocks. Thus, the replacement basis for cache replacement algorithm is found. In addition, considering the commercial value of the system, based on P2P compensated VOD, this paper adds the advertising plugging function to the system. In order to improve the user acceptance and broadcast effect of advertising, this paper analyzes the content description of advertisement, and finally uses a method of advertising content description based on natural fuzzy language. Thus it can improve the maneuverability of advertisement correlation calculation.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN948.64
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