Title :
Joint impact of MPEG-2 encoding rate and ATM cell losses on video quality
Author :
Verscheure, Olivier ; Frossard, Pascal ; Hamdi, Maher
Author_Institution :
Inst. for Comput. Commun. & Applications, Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
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
Keywords :
ISO standards; asynchronous transfer mode; code standards; data compression; image reconstruction; image sequences; quality of service; telecommunication standards; video coding; visual communication; ATM cell losses; ATM/AAL5 networks; CBR; CBR video services; ISO; MPEG-2 encoding rate; MPEG-2 standard; MPQM; cell loss ratio; constant encoding bit rate; end-user perception; human judgements; lossy networks; network conditions; optimal bit rate; perceptual quality metric; perceptual video quality; reconstructed video sequence; user-oriented QoS; video transmission; Asynchronous transfer mode; Bit rate; Encoding; ISO standards; Propagation losses; Quality of service; Streaming media; Video compression; Video on demand; Videoconference;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775702
