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Joint impact of MPEG-2 encoding rate and ATM cell losses on video quality

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3 Author(s)
Verscheure, O. ; Inst. for Comput. Commun. & Applications, Swiss Fed. Inst. of Technol., Zurich, Switzerland ; Frossard, P. ; Hamdi, M.

This work addresses the analysis of the end-user perception of CBR MPEG-2 video services transmitted over ATM/AAL5 networks. We first independently study how the perceptual video quality behaves with the constant encoding bit rate (CBR) and the network cell loss ratio (CLR). We then jointly analyze the impact of these two components onto the user-oriented QoS. All the quality assessments are based on a perceptual quality metric, MPQM, which proved to behave consistently with human judgements. We show that, when considering video transmission over lossy networks, there is an optimal bit rate to be determined that maximizes the end-user perception of the service under some given network conditions

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Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE  (Volume:1 )

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