On the design of a low-cost video-on-demand storage system |
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Authors: | Banu Özden Rajeev Rastogi Avi Silberschatz |
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Affiliation: | (1) AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, NJ 07974-0636, USA , US |
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Abstract: | Recent advances in storage technology, coupled with the
dramatic increase in the bandwidth of networks,
now make it possible to provide "video-on-demand" service to
viewers. A video-on-demand server is a
computer system that stores videos in compressed digital form
and provides support for
various portions of compressed video data to
be accessed and transmitted concurrently.
We present a low-cost storage architecture
for a video-on-demand server that relies principally on disks.
The high bandwidths of disks in conjunction with a
clever strategy for striping videos
on them enables
simultaneous
access and transmission of portions of a video,
separated by fixed time intervals.
We also present schemes for implementing
VCR-like functions including fast forward, rewind, and pause,
and extend our schemes to the case in which videos have
different rate requirements. |
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Keywords: | : Video-on-demand service – video storage on disk – VCR control operations |
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