Efficient support for interactive operations in multi-resolution video servers

被引：0

作者：

Prashant J. Shenoy

Harrick M. Vin

机构：

[1] Distributed Multimedia Computing Laboratory,

[2] Department of Computer Sciences,undefined

[3] University of Texas at Austin,undefined

[4] Taylor Hall 2.124,undefined

[5] Austin,undefined

[6] TX 78712-1188,undefined

[7] USA; e-mail: {shenoy,undefined

[8] vin}@cs.utexas.edu; URL: http://www.cs.utexas.edu/users/dmcl ,undefined

来源：

Multimedia Systems | 1999年 / 7卷

关键词：

Key words:Multi-resolution video servers – Multi-resolution playback – Scan operations – Fast-forward – Rewind – Disk arrays – Scalable compression;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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-arr ay-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.

引用

页码：241 / 253

页数：12