PCRTT enhancement for off-line video smoothing

Ofer Hadar, Reuven Cohen

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


An enhancement of the Piecewise Constant Rate Transmission and Transport (PCRTT) algorithm for reducing the burstiness of a video stream based on smoothing constant intervals is proposed. The two algorithms are compared by testing 12 compressed video streams according to the Motion-JPEG format. The new algorithm called e-PCRTT is shown to construct transmission rate-plans with smaller buffer sizes compared to the original PCRTT. Alternatively, for the same buffer size e-PCRTT reduces the number of bandwidth changes compared to PCRTT. In addition, e-PCRTT produces a rate-plane with smaller initial playback delay, which applications based on. We also introduce a new scheme for multiplexing several smoothed video traces, into a single constant-bit-rate channel that are sychronized and have fixed-size intervals.

Original languageEnglish
Pages (from-to)89-100
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1 Jan 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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