Issues of Quality and Multiplexing When Smoothing Rate Adaptive Video Academic Article uri icon


  • We have proposed a smoothing and rate adaptation algorithm-SAVE (Smoothed Adaptive Video over Explicit rate networks)-for transport of compressed video over ratecontrolled networks. SAVE attempts to preserve quality as much as possible, and exercises control over the source rate only when essential to prevent unacceptable delay. In order to understand the impact on quality of rate adaptation, we have evolved the quality metrics typically used to evaluate the efficacy of mechanisms to transport video. In this paper, we investigate the dynamic nature of rate reduction: any prolonged impairment is likely to be noticeable. We study the sensitivity of SAVE to its parameters and network characteristics. Finally, the utility of the proposed scheme is measured by its ability to multiplex a large number of streams effectively. Our evaluations are based on experiments with 20 traces of entertainment videos using different compression algorithms. 1999 IEEE.

published proceedings


author list (cited authors)

  • Duffield, N. G., Ramakrishnan, K. K., & Reibman, A. R.

citation count

  • 9

complete list of authors

  • Duffield, NG||Ramakrishnan, KK||Reibman, Amy R

publication date

  • December 1999