Efficient support for interactive operations in multi-resolution video servers

  • Authors:

  • Prashant J. Shenoy;Harrick M. Vin

  • Affiliations:

  • Univ. of Texas at Austin, Austin, Texas;Univ. of Texas at Austin, Austin, Texas

  • Venue:
  • Multimedia Systems - Special issue on video content based retrieval
  • Year:
  • 1999

Quantified Score

Hi-index 0.00

Visualization

Abstract

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.