PCRTT enhancement for off-line video smoothing

Authors:
Ofer Hadar;Reuven Cohen
Affiliations:
Communication Systems Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel;Department of Computer Science Technion, Haifa, Israel
Venue:
Real-Time Imaging
Year:
2001

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Abstract

An enhancement of the Piecewise Constant Rate Transmission and Transport (PCRTT) algorithm for reducing the burstiness of a video stream, based on smoothing constant interval is proposed. The new algorithm, called e-PCRTT, relies on geometrical consideration rather than traditional rate-control analysis. E-PCRTT is shown to construct transmission rate-plans with smaller buffer sizes, as compared to the original PCRTT. Alternatively, for the same buffer size, e-PCRTT reduces the number of bandwidth changes as compared to PCRTT. In addition, e-PCRTT produces a rate-plan that requires a smaller initial playback delay.