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如果说10年前利用互联网传送多媒体内容,把Internet当作传送多媒体信息的媒介是一个非常具有创新性的想法,那么现在,随着技术的进步,通过移动网络传送多媒体内容似乎就是顺理成章的事情了。“2005年,全球将会有10亿非PC终端,其中70%是手机和电视”,日前访问北京的互联网流媒体技术的开创者RealNetworks公司董事长兼首席执行官RobGlaser先生在中国首届Real流媒体论坛上指出,“毫无疑问,未来移动将是整个流媒体技术发展的核心。我们的目标就是为移动终端、媒体内容提供商以及企业和用户提供多样化的产品、解决方案和服务。”据RealNetwork… 相似文献
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计算机互联网和多媒体技术的迅速发展为数字化媒体信息的广泛传播带来了极大的便利,但同时,数字媒体易于无损拷贝、分发等特性对数字媒体的权益管理和内容保护提出了严峻的挑战。本文探讨了网络时代广播影视数字权益管理的重要意义和面临的挑战,阐述了数字权益管理的关键技术,并提出了适用于大规模直播环境的流媒体数字权益管理系统THUDRM。 相似文献
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流媒体技术是从互联网上发展起来的一种传送多媒体数据流的技术,其主要特点是以流的形式进行多媒体数据的传输。采用流媒体技术的客户端播放器在播放一个多媒体内容之前,预先下载媒体内容的一部分作为缓存,在将缓存中的这部分内容向用户播放的过程当中,该多媒体内容的剩余部分将在后台从服务器继续下载到客户端播放器上,这样就实现了所谓“边下载,边播放”的流式播放。 相似文献
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流媒体技术改变了传统互联网的呆板形象,丰富了互联网的功能,使之成为一种有强大吸引力的新媒体。流媒体不但可以播放广播、电视媒体的所有节目内容,还可以提供更具有吸引力的多媒体内容点播、网络直播、游戏等个性化的互动服务。此外,流媒体技术还将会在新闻出版、证券、娱乐以及电子商务、远程培训、视频会议等领域得到更加广泛的应用。 相似文献
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推动流媒体市场发展的主要因素有互联网用户、主干网带宽、接入网速度对流媒体业务的需求和流媒体自身技术的发展。流媒体市场的兴起带动了相关价值链的发展,包括:流媒体技术、网络运营商、流媒体内容的存储和管理、流媒体终端、流媒体服务商以及数字安全。对国内外流媒体市场及其商业应用进行了分析,并介绍了市场上几家主流的视频厂商和其视频平台。 相似文献
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移动流媒体平台建设探讨 总被引:1,自引:0,他引:1
流媒体技术是从互联网发展起来的一种多媒体应用技术,是指应用流式传输技术在网络上传输的多媒体文件,包括音频、视频和动画等。移动流媒体技术具有交互性和便捷性,而且视频流可以边下载边播放,对存储空间要求不高。流媒体系统可以为无线终端用户提供基于流技术的音频、视频服务。 相似文献
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介绍了无线局域网及流媒体技术的网络传输特点和技术,给出了基于架构式(Infrastructure)无线局域网的流媒体技术的设计与应用方案,认为随着网络带宽的增加,适应流式应用的多媒体编码和解码技术的不断发展,流媒体技术在无线局域网和Internet上的应用必将跨入一个新阶段。 相似文献
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介绍了流媒体的网络传输特点和技术,Windows Media技术的组成和工作方式,给出了基于Windows Media服务技术的局域网E—learning的设计与应用方案,认为随着网络带宽的增加,适应流式应用的多媒体编码和解码技术的不断发展,流媒体技术在局域网和Internet上的应用必将跨入一个新阶段。 相似文献
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Media Streaming With Network Diversity 总被引:1,自引:0,他引:1
Frossard P. de Martin J.C. Reha Civanlar M. 《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》2008,96(1):39-53
Today's packet networks including the Internet offer an intrinsic diversity for media distribution in terms of available network paths and servers or information sources. Novel communication infrastructures such as ad hoc or wireless mesh networks use network diversity to extend their reach at low cost. Diversity can bring interesting benefits in supporting resource greedy applications such as media streaming services, by aggregation of bandwidth and computing resources. Typically, overlay network architectures compensate for lack of quality-of-service guarantees in the network by introducing redundancy in the media delivery system through network diversity. They can support efficient multimedia services when routing, coding, and scheduling algorithms are able to adapt to both the media information and the dynamic network status. This paper presents an overview of the distributed streaming solutions that profit from network diversity in order to improve the quality of multimedia applications. We discuss the coding techniques used for adaptive and flexible media streaming with network diversity. We describe the problem of media streaming with path diversity and focus on routing, path computation, and packet scheduling problems in multipath networks. Then, the advantages of server or source peer diversity in collaborative streaming solutions are discussed. Lastly, we present an overview of wireless mesh networks and focus on the typical constraints imposed by these novel communication models on media streaming with network diversity. 相似文献
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The proliferation of multimedia content on the Internet poses challenges to existing content delivery networks. While proxy caching can successfully deliver traditional text-based static objects, it faces difficulty delivering streaming media objects because of the objects' sizes as well as clients' rigorous continuous delivery demands. We present two techniques supporting segment based proxy caching of streaming media. We evaluated these techniques in simulations and real systems. 相似文献
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Challenges and Approaches in Large-Scale P2P Media Streaming 总被引:5,自引:0,他引:5
Large-scale multimedia streaming over the Internet requires an enormous amount of server and network resources. Traditional client-server approaches allocate a dedicated stream from the server for each client request, which is expensive and doesn't scale well. By using end hosts' huge bandwidth and computational capacity, peer-to-peer technologies shed new light on media streaming applications' development. Yet, locating supplying peers and content delivery path maintenance are two major challenges in this area 相似文献
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Object-based multimedia communications demand a much more sophisticated delivery framework for delivering synchronized, multiplexed, media object streams across the Internet or wireless networks. We describe the Moving Picture Expert Group's Delivery Multimedia Integration Framework (DMIF) and examine several remote retrieval issues. We also describe our design and implementation of a DMIF-based MPEG-4 multimedia streaming system. 相似文献
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为了保证流媒体传输的基本安全需求和维护商家的利益,提出一个新的流媒体安全传输技术模型。该模型从加密算法、流媒体传输、用户身份等方面对现有的数字版权管理方案进行改进,可完成包括视频、音频或多媒体文件等在内的数字商品的授权、使用和转让。同时,该模型还能够提高流媒体传输的效率、增强其安全性,具有一定的实用价值。 相似文献
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Intranet.tv is a Web-based platform that allows simple management and delivery of streamed multimedia content, by building on existing Internet protocols. This paper considers the state of the art for streaming media, by introducing the technology behind intranet.tv, and the value-add that intranet.tv provides to corporate video-streaming. 相似文献