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Efficient support for interactive operations in multi-resolution video servers
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DOI：10.1007/s005300050126.png)
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Abstract
En 中文
In this paper, we present a placement algorithm that interleaves multi-resolution video streams on a disk array and enables a video server to efficiently support playback of these streams at different resolution levels. We then combine this placement algorithm with a scalable compression technique to efficiently support interactive scan operations (i.e., fast-forward and rewind). We present an analytical model for evaluating the impact of the scan operations on the performance of disk-array-based servers. Our experiments demonstrate that: (1) employing our placement algorithm substantially reduces seek and rotational latency overhead during playback, and (2) exploiting the characteristics of video streams and human perceptual tolerances enables a server to support interactive scan operations without any additional overhead.
Keywords:
multi-resolution video servers
multi-resolution playback
scan operations
fast-forward
rewind
disk arrays
scalable compression
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2.7K
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