Proceedings ArticleDOI
Optimal and efficient merging schedules for video-on-demand servers
Derek L. Eager,Mary K. Vernon,John Zahorjan +2 more
- pp 199-202
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TLDR
The simplest video-on-demand (VOD) delivery policy is to allocate a new media delivery stream to each client request when it arrives, but it is untenable because it requires server bandwidth that scales linearly with the number of clients that must be supported simultaneously, which is too expensive for many applications.Abstract:
The simplest video-on-demand (VOD) delivery policy is to allocate a new media delivery stream to each client request when it arrives. This policy has the desirable properties of “immediate service” (there is minimal latency between the client request and the start of playback, assuming that sufficient server bandwidth is available to start the new stream), of placing minimal demands on client capabilities (the client receive bandwidth required is the media playback rate, and no client local storage is required), and of being simple to implement. However, the policy is untenable because it requires server bandwidth that scales linearly with the number of clients that must be supported simultaneously, which is too expensive for many applications.read more
Citations
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Minimizing Bandwidth Requirements for On-Demand Data Delivery.
TL;DR: In this article, the authors compared the performance of the partitioned dynamic skyscraper and hierarchical multicast stream merging (HMSM) over a wide range of client request rates.
Patent
Information additive code generator and decoder for communication systems
TL;DR: In this article, an encoder uses an input file of data and a key to produce an output symbol with key I. The output symbols are generally independent of each other, and an unbounded number (subject to the resolution of I) can be generated, if needed.
Journal ArticleDOI
Minimizing bandwidth requirements for on-demand data delivery
TL;DR: A new practical delivery technique is proposed, called hierarchical multicast stream merging (HMSM), which has a required server bandwidth that is lower than the partitioned dynamic skyscraper and is reasonably close to the minimum achievable server bandwidth over a wide range of client request rates.
Patent
Enhanced block-request streaming using cooperative parallel HTTP and forward error correction
TL;DR: A block-request streaming system provides for improvements in the user experience and bandwidth efficiency of such systems, typically using an ingestion system that generates data in a form to be served by a conventional file server (HTTP, FTP, or the like), wherein the ingestion system intakes content and prepares it as files or data elements to be serve by the file server, which might or might not include a cache as mentioned in this paper.
Patent
Methods and apparatus for scheduling, serving, receiving media-on-demand for clients, servers arranged according to constraints on resources
TL;DR: In this article, a media object is partitioned into segments of blocks, where each block is a unit of media for which a client will wait to receive an entire block before playing out the block, and each segment includes an integer number of blocks.
References
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Proceedings ArticleDOI
Patching: a multicast technique for true video-on-demand services
Kien A. Hua,Ying Cai,Simon Sheu +2 more
TL;DR: This paper is able to tiate the service latency and improve the efficiency of mtiticast at the same time, and indicates convincingly that Patching offers .wbstanti~y better perforrnace.
Minimizing Bandwidth Requirements for On-Demand Data Delivery.
TL;DR: In this article, the authors compared the performance of the partitioned dynamic skyscraper and hierarchical multicast stream merging (HMSM) over a wide range of client request rates.
Journal ArticleDOI
Minimizing bandwidth requirements for on-demand data delivery
TL;DR: A new practical delivery technique is proposed, called hierarchical multicast stream merging (HMSM), which has a required server bandwidth that is lower than the partitioned dynamic skyscraper and is reasonably close to the minimum achievable server bandwidth over a wide range of client request rates.
Proceedings ArticleDOI
Supplying instantaneous video-on-demand services using controlled multicast
Lixin Gao,Don Towsley +1 more
TL;DR: This work proposes and evaluates the performance of a multicast technique, called controlled CIWP, for supplying video-on-demand services and derives the optimal threshold that maximizes the number of server channels required.
Proceedings ArticleDOI
Improving video-on-demand server efficiency through stream tapping
TL;DR: A new system is presented that allows a client to greedily "tap" data from any stream on the VOD server containing video data the client can use through the use of a small buffer on the client set-top box and requires less than 20% of the disk bandwidth used by conventional systems for popular videos.
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