Comparison of bandwidth smoothing techniques for the transmission of prerecorded compressed video

Wu chi Feng, Jennifer Rexford

Research output: Contribution to journalConference articlepeer-review

107 Scopus citations


The transfer of prerecorded, compressed video requires multimedia services to support large fluctuations in bandwidth requirements on multiple time scales. Bandwidth smoothing techniques can reduce the burstiness of a variable-bit-rate stream by prefetching data at a series of fixed rates, simplifying the allocation of resources in video servers and the communication network. Given a fixed client-side prefetch buffer, several bandwidth smoothing algorithms have been introduced that are provably optimal under certain constraints. This paper presents a collection of metrics for comparing these smoothing algorithms and evaluating their cost-performance trade-offs. Due to the scarcity of available trace data, we have constructed a video capture testbed and generated a collection of twenty full-length, motion-JPEG encoded video clips. Using these video traces and a range of client buffer sizes, we investigate the interplay between the performance metrics through simulation experiments. The results highlight the unique strengths and weaknesses of each algorithm.

Original languageEnglish (US)
Pages (from-to)58-66
Number of pages9
JournalProceedings - IEEE INFOCOM
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1997 16th IEEE Annual Conference on Computer Communications, INFOCOM. Part 1 (of 3) - Kobe, Jpn
Duration: Apr 7 1997Apr 12 1997

All Science Journal Classification (ASJC) codes

  • General Computer Science
  • Electrical and Electronic Engineering


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