校园流媒体视频点播规划与实施

本文介绍了流媒体点播系统的研究意义,分析了流媒体及视频点播技术的原理、传输方式、流媒体格式;针对一般学院架构校园流媒体视频点播系统提出方案并简述了如何配置流媒体系统,实现网络点播。     

基于流媒体技术的校园网视频点播系统的设计与实现

校园网视频点播系统能极大地方便师生自我学习,是一种现代化教育手段。使用流媒体技术能较好地解决视频点播问题,是流媒体技术典型的应用之一。本文简要介绍了流媒体技术和校园网视频点播系统的工作原理,主要阐述一个基于流媒体技术的校园网视频点播系统的设计与实现,详细说明了系统的工作流程和设计方案。     

基于流媒体技术的视频点播系统

随着宽带网和计算机性能的发展,流媒体技术越来越广泛地应用于视频点播系统.本文主要介绍了流媒体技术和视频点播技术的主要方面,并介绍了流媒体技术在视频点播中的应用.     

基于流媒体技术的视频点播系统研究与应用

随着计算机技术、网络技术和视频处理技术的飞速发展,流媒体技术广泛地应用到视频点播系统中。该文介绍了流媒体技术及流媒体技术在视频点播系统的应用,并介绍了视频点播系统在党校教学中的应用。     

基于流媒体的视频点播系统

随着宽带网和计算机性能的发展，流媒体技术越未越广泛地应用于视频点播系统，本文以Win 2000平台开发实现流媒体网上点播系统为实例，阐述了视频点播系统的工作原理、协议基础和软件实现方案，为基于流媒体的各项应用提供参考。     

怎样实现流媒体的web效果

伴随着Internet技术的快速发展：流媒体技术的应用越来越普及。我们相信流媒体技术将在未来的几年里着逐步应用于收费播放。网络电台、远程教育、视频点播等．而且用户对流媒体需求的日益增加．流媒体技术使用需求将越来越广泛。     

流媒体视频点播系统客户端功能的研究与设计

视频点播系统的客户端功能管理对流媒体视频点播系统的性能有重要的影响。本文通过对客户端功能的设计,给出一种适应流媒体点播系统的缓存管理策略和缓存替换算法。结果表明系统资源利用率和节目的播放质量和流畅性都得到了提高,证实了算法在流媒体点播系统中的可行性和有效性。     

基于流媒体技术的校园网WebVOD的构建

在当今的计算机与信息技术时代，视频点播（VOD）技术作为一种网络媒体迅速渗透到人们的日常生活和学习当中。文章根据视频点播（VOD）流媒体的播放要求，介绍了流媒体技术的相关知识，阐述了基于校园网Web VOD系统的构建原理和软件工具选择，给出了一种基于流媒体技术的Web VOD系统构建方案。     

在线视频点播系统的设计与实现

VOD点播技术随着计算机技术的发展,凭借其良好的人机交互性和流媒体传输技术受到教育、娱乐等行业青睐.VOD广泛应用在教育、娱乐、商业等领域.视频技术领域因为流媒体点播技术的出现发生了重大变革,人们的生活品质得到了极大改善,生活质量和工作效率都因为在线视频点播系统提高了.本文以流媒体传输原理为基础,分析基于WEB的视频点播系统的整体方案,应用在校园局域网中,并完成各子系统功能的设计.本文设计的VOD点播系统技术先进、界面简单,操作性强,而且成本低于其他系统,是各个校园局域网视频点播系统的良好选择.     

视频点播系统研究与实现

目前,视频点播技术方兴未艾,在教育领域上渐渐受到了推广应用。本文主要阐述了视频点播系统的功能与应用,分析了视频点播的工作原理,解析了B/S开发模式、流媒体技术和MPEG编码技术,目的在于推动视频点播技术在多媒体教学中的推广与普及。     

Video block device for user-friendly delivery in IaaS clouds

Peer-to-Peer (P2P) streaming technology based on various service requirements often remains on the elusive benefits of user-friendly video streaming in cloud computing environments. Cloud-assisted P2P media streaming gives an opportunity to enhance on-demand, dynamic and easily accessible videos. This paper outlines the fundamental video block device (VBD) method for user-friendly viewing patterns that inherits from user access patterns and provides efficient delivery using an enhanced BitTorrent protocol.     

基于Flex、Red5和MongoDB的视频直播、录制及存储系统设计

为改善以往网络视频直播或点播过程中播放不流畅的情况和寻找大量视频数据的存储策略,提出了一种实时的视频直播、录制及存储系统的整体设计方案。利用开源的流媒体服务器Red5结合富互联网技术Flex实现直播和录制;通过开源NoSQL数据库MongoDB将录制的视频数据进行存储。实际测试结果表明,该平台能满足系统在多用户访问和数据存储方面的要求。     

A P2P streaming architecture supporting scalable media

Peer-to-peer (P2P) streaming solutions are changing the way real-time multimedia transmission is distributed over the Internet. The advances in video coding, like Scalable Video Coding, also turns possible high-quality/definition video distribution and consumption. The recent push in using the standard HTTP protocol for streaming videos in the World Wide Web, is also making converged entertainment services come closer to global deployment across TV, Tablet and mobile devices. The combination of Scalable Video, P2P networks and Web technologies for transmitting high-quality live and time-shifted media contents, is a potential area of innovation and a very actual research topic. This paper describes the architecture of a quality-centric P2P distribution network supporting adaptive and scalable streamable media, that decouples the transport mechanisms from the media content type and structure (video, audio, timed-data, timed-text), irrespective of their encoding schemes. The set of P2P streaming protocols designed for the network enables streaming of live and on-demand media, with very low signaling cost. Prototypes of the P2P network components were implemented and integrated in the streaming platform of EU FP7 SARACEN Project. A suite of tests for evaluation of the performance of the solution demonstrates that it keeps a fairly stable quality level with reduced amplitude and frequency of variations, raising the overall quality perceived by the end-user.     

Auction-Based On-Demand P2P Min-Cost Media Streaming with Network Coding

Realizing on-demand media streaming in a Peer-to-Peer (P2P) fashion is more challenging than in the case of live media streaming, since only peers with close-by media play progresses may help each other in obtaining the media content. The situation is further complicated if we wish to pursue low aggregated link cost in the transmission. In this paper, we present a new algorithmic perspective toward on-demand P2P streaming protocol design. While previous approaches employ streaming trees or passive neighbor reconciliation for media content distribution, we instead coordinate the streaming session as an auction where each peer participates locally by bidding for and selling media flows encoded with network coding. We show that this auction approach is promising in achieving low-cost on-demand streaming in a scalable fashion. It is amenable to asynchronous, distributed, and lightweight implementations, and is flexible to provide support for random-seek and pause functionalities. Through extensive simulation studies, we verify the effectiveness and performance of the proposed auction approach, focusing on the optimality in overall streaming cost, the convergence speed, and the communication overhead.     

A survey on peer-to-peer video streaming systems

Video-over-IP applications have recently attracted a large number of users on the Internet. Traditional client-server based video streaming solutions incur expensive bandwidth provision cost on the server. Peer-to-Peer (P2P) networking is a new paradigm to build distributed network applications. Recently, several P2P streaming systems have been deployed to provide live and on-demand video streaming services on the Internet at low server cost. In this paper, we provide a survey on the existing P2P solutions for live and on-demand video streaming. Representative P2P streaming systems, including tree, multi-tree and mesh based systems are introduced. We describe the challenges and solutions of providing live and on-demand video streaming in P2P environment. Open research issues on P2P video streaming are also discussed.

Dynamic Scheme Transition Adaptable to Variable Video Popularity in a Digital Broadcast Network

To provide on-demand video streaming services through the network, video objects with both high and low client request rates must be served efficiently. In this paper, we propose a dynamic scheme transition to provide on-demand streaming services efficiently regardless of video popularity. This approach can maintain quality-of-service (QoS) by transitioning the service scheme according to the request rate. The server provides services by heuristically broadcasting video segments when the video popularity is low and by a Periodic Broadcast when the video popularity is high. The server identifies the variations in client request rates from the number of service channels and determines transitions to more efficient service schemes autonomously. We evaluated this scheme transition for various parameters and traces from a company providing streaming services. The results show that the performance of scheme transition is very efficient.      

基于流媒体技术的教学视频服务平台设计

针对现有网络教学课程制作成本高、制作周期长的问题,设计基于流媒体技术的教学视频服务平台,教师可在完成课堂教学任务的同时进行课程直播和课程制作。本文平台采用Java SSM模式实现课程和直播计划的灵活编排,通过Wowza流媒体服务器完成课程的直播和点播。经实际应用,本平台实现了部分MOOC课程的制作,系统运行稳定,效果良好,为学生提供了一种新的学习途径,进一步提高了教学水平。     

流媒体在电视信号传输中的应用

随着互联网的快速发展和流媒体技术的日趋成熟,人们从网络上获取的信息已不仅仅局限于文字和图形,音频和视频等多媒体信息的传播越来越得到关注.电视信号在网络上的传输,尤其是电视信号的实时广播和点播成为了目前电视节目进行传送的主要方向.介绍了流媒体技术的特征、分类以及其在电视数据传输中的应用.     

A hierarchical control protocol for group-oriented playbacks supported by content distribution networks

Content distribution networks have recently been introduced as a more efficient alternative to centralized servers for the delivery of static content as well as media streaming services ranging from TV broadcasts to video on-demand. Content Distribution Networks can also efficiently provide collaborative playback service, which allows a synchronous group of users to select, simultaneously watch altogether and share the control of a multimedia session. This paper presents the definition and analysis of the Hierarchical Cooperative Control Protocol (HCOCOP), which allows a synchronous group of users to share the control of the media streaming session provided by a Content Distribution Network. The analysis phase, which was supported by discrete-event simulation, was carried out to characterize the efficiency of the protocol on the basis of the following defined performance indices: blocking probability, denial probability, server load and network load. The performances obtained for architectures based on Content Distribution Networks are compared with those obtained for centralized architectures providing collaborative playbacks. The comparison shows that HCOCOP significantly improves performance of media streaming control.