Enhancing Quality of MPEG Video through Partially Reliable Transport Service in Interactive Application

Vincent Lecuire¹, Francis Lepage¹, and Khalil Kammoun²

¹Centre de Recherche en Automatique de Nancy
(CNRS ESA 7039),
BP 239, F-54506 Vandoeuvre-lŠs-Nancy, France
{Vincent.Lecuire,Francis.Lepage}@cran.uhp-nancy.fr

²University of Karlsruhe,
Kaiserstr. 12,
D-76128 Karlsruhe, Germany

Abstract. Real-time video communication over a packet switching network is subject to losses and errors. In few networking environment, a partially reliable transport service based on error control by retransmission is a possible option. We propose a retransmission-based correction scheme which is driven by the time remaining for the data delivery and also by the importance of artifacts the data loss produces in the reconstructed video. This scheme is applied to continuous MPEG video packet streams. Experimental results show that the picture quality of MPEG video is degraded more gracefully in the presence of network errors, and those with a low cost on network bandwidth. In addition, the best QoS policy to use the partially reliable transport service is highlighted.

LNCS 2216, p. 96 ff.

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Online publication: October 10, 2001
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