Multiplexing Gain of Capped VBR Video
Zlatka Avramova, Danny De Vleeschauwer, Sabine Wittevrongel, Herwig Bruneel · Ghent University Academic Bibliography (Ghent University) · 2005
CBR (Constant Bit Rate) video fluctuates in quality, while its multiplexing behaviour is easy to predict: the links can be loaded to almost 100%. VBR (Variable Bit Rate) video aims at constant quality, but as the bit rate fluctuates over time the links cannot be fully loaded. Because in unconstrained VBR video the bit rate fluctuation might be too large, capped VBR video is proposed as an alternative. Similarly as for unconstrained VBR video, capped VBR video aims at a constant quality, but when in certain intervals this requires a too high bit rate, the bit rate is limited (i.e., capped) in order to support more video flows on the links, at the expense of a quality reduction.