Title :
Packing scheme for layered coding MPEG-2 video transmission over ATM based networks
Author :
Cuenca, P. ; Barbosa, L. Qrozco ; Wang, L. ; Garrido, Austin ; Quiles, F.
Author_Institution :
Dept. de Inf., Castilla-La Mancha Univ., Albacete, Spain
Abstract :
In the transmission process of a video signal over ATM networks, cells are inevitably exposed to delays, errors and losses due to the statistical multiplexing used in these networks. These phenomena effect the quality of the video signal and without adequate measures to control the propagation of the impairments the quality of the service may fall below acceptable levels. In the first part of this paper, we present an adaptive data partitioning (ADP) scheme. This scheme splits a video stream into a high priority and low priory substreams. In the second part of the paper, we propose a novel hierarchical packing scheme for the transmission of the two video substreams over ATM. The proposed packing scheme overcomes the problem that when no provisions are taking to properly pack a hierarchical-encoded video stream, the loss of a high priority ATM cell will result in the complete loss of the group of cells. Results for different video sequences and different bitstream split levels are given, showing the efficiency of our schemes
Keywords :
asynchronous transfer mode; image sequences; video coding; visual communication; ADP scheme; ATM based networks; MPEG-2 video transmission; adaptive data partitioning scheme; error propagation; hierarchical packing scheme; hierarchical-encoded video stream; layered coding; statistical multiplexing; substreams; transmission process; video sequences; video signal; video stream; video substreams; Asynchronous transfer mode; Broadcast technology; Computer errors; Computer networks; Electronic mail; Propagation losses; Signal processing; Streaming media; TV; Video sequences;
Conference_Titel :
IEEE ATM Workshop 1997. Proceedings
Conference_Location :
Lisboa
Print_ISBN :
0-7803-4196-1
DOI :
10.1109/ATM.1997.624674