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The evolution of Video-on-Demand (VOD) technologies have revolutionized the way watching TV changed from passive reception to user-empowering. Nowadays, with the high market-penetration level of Smart TV achieved in the globe, VOD has become one of the main online applications on TV. Nevertheless, as the number of users and media files grows rapidly on demand, the load balance and storage capacity...
A typical online learning service allows users to watch video lectures in web browsers at any time and any place. In many cases of such services, security solutions (e.g., user authentication and access control) have been deployed to secure access to their premium contents to authorized users only who have paid the subscription fee. In this paper, we demonstrate how security solutions in real-world...
The increased in demand for multimedia delivery coupled with the advancement of optical network technologies has spurred interest in developing an efficient streaming solutions. New user behavior interest in services beyond voice has prompted service operators to improve on how to package their services more attractively, i.e. looking for ways to efficiently add value to their proprietary services,...
In this paper, we propose a new Time-Driven Mesh (TDM) overlay network for peer-to-peer video-on-demand systems. In our TDM, all of the peers construct a mesh network connected among them in chronological order of their playback starting times. In order to efficiently search multiple streaming suppliers, we manage the playback starting time and the network location information for all of the peers...
The courseware, which is merely made up of texts, pictures, links, etc, can not meet the requirements of learners. The teaching video is becoming more and more popular. Video-on-demand system for elementary and secondary schools contains much teaching videos, it allow learners to choose what to learn freely, control learning process. From the paper, you can learn what the video-on-demand system for...
According to the characteristics of 3Tnet VOD, we propose a design and implementation of Media Distribution System for streaming media, which utilizes the bandwidth of 3Tnet and improves the media distribution speed, while also providing a more scalable distribution scheme. Simulation results show that the proposed scheme could not only support VOD service on the 3Tnet in a scalable way, but also...
Low cost, high bandwidth Internet connectivity has made Video-on-Demand (VoD) one of the most significant new age technologies being adopted by ever-growing users. Video applications such as online video streaming, video conferencing and many others are being increasingly used. The increased in IP based video applications has resulted in more traffic over IP networks. Hence, there is a need for efficient...
Unstructured BitTorrent-like Peer-to-Peer networks have been extensively studied as an important enabling technology for Video-on-Demand. While most studies maintain the pull-based nature of unstructured Peer-to-Peer networks, recent ones are investigating the combination of pull and push operations. The goal of the proposed push/pull protocols is to make more effcient use of the available bandwidth,...
For current P2P-VoD systems, three fundamental problems exit in user experience: exceedingly large startup delay, long jump latency, and poor playback continuity. These problems primarily stem from lack of media data. In this paper, we propose Multi-Task Downloading with Bandwidth Control (MTD(BC)), an efficient and practical mechanism to prefetch media data. In MTD, a user can download multiple videos...
Peer-to-peer (P2P) on-demand streaming systems inevitably suffer from peers churn that is the inherent dynamic characteristic of overlay network. With frequent peer departure, a large amount of media data cached on peer disk turns offline and unavailable, which becomes the major reason of heavy server load. To address the above issue, a new proactive data replication mechanism is proposed and implemented...
Recently video-on-demand (VoD) has become a popular Internet application due to its promising usage in a variety of Internet-based services. However, it remains a challenging problem to provide scalable and fluent VoD services over Internet especially when including VCR operations into VoD service. Supporting user interactivities such as random seek, rewind and fast forward is desirable while these...
With the rapid development of network application, the use of media streaming system became more and more popular, greatly enhancing the user experience. But as the number of internet users is increasing sharply, the traditional Client-Server (C/S) architecture cannot afford so many clients (end-users), and the network scalability was so poor. The disadvantages of this C/S architecture became apparent...
Due to their ability to overcome many shortcomings associated with the contemporary client-server paradigm, Peer-to-Peer (P2P) networks have attracted phenomenal interests from researchers in both academia and industry. Interactive and multimedia streaming applications using P2P networks are, however, often prone to long startup delays, which disrupt the smooth playback and undermine users' perceived...
As the streaming media files growing larger and larger in size, it inevitably aggravates the network congestion and user perceive latency, to settle problem lots of caching algorithms have been applied in video-on-demand (VOD)system. However, different algorithm is correspondence to an unique caching replacement policy, which limits its applications and the effects are not very satisfied, so in VOD...
Recently, the video delivery service is spreading along with the penetration of broadband access to residential users. Although content delivery network (CDN) system has been deployed for video delivery, it's costly because equipment reinforcement is needed as a number of client increases. To settle this problem, use of peer-to-peer (P2P) system has been considered, namely P2P live-streaming and P2P-VoD...
How to improve the scalability and QoS of peer-to-peer on-demand streaming system based on unstructured overlay is still a problem. Researchers have proposed some memory based buffering schemes to archive the targets. Considering the limited space of memory on one peer, a new caching strategy, which can integrate memory-caching strategy with disk-caching strategy, is proposed to make full use of peers...
Data scheduling is the key issue in peer-to-peer streaming system, especially in peer-to-peer VoD system. This paper mainly focuses on data chunkspsila priority definition of data scheduling in peer-to-peer VoD system. After carefully studying the meanings of regular rarest first scheduling and random scheduling, a local-rarest-random-heurist (LR2H) scheduling is proposed in order to fully use the...
In the P2PVoD system, the data assignment is in essence a NP-hard issue and it is unable to find a polynomial time optimal algorithm. Meanwhile, selfish behavior of peers is one of the key problems that influence the optimal solution. In this paper, a game-theoretic data assignment scheme is presented.Peers are cooperating with each other in order to maximize social payoff. This scheme is also based...
The peer-to-peer solution provides a service model that is attractive for video-on-demand (VOD). The key idea of using P2P technology is to aggregate storage and bandwidths capacity of peers to alleviate workload on the source server. Compared with P2P live streaming, it is much more challenge for VOD due to peers' asynchronous request, different interested portion and support for VCR-like operation...
Aiming at the problem of how to efficiently manage and use cache content in P2P VoD system, a distributed cache management model (DCMM) for P2P VoD is proposed. In the model, peers distributed cache management model for P2P VoD systems whose caching media segments integrate a full program are organized into a ring. Any segment of a specific program can be found quickly within a ring. With the concept...
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