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A New Rate Control Strategy for the MPEG Video Coding Algorithm

Abstract In this paper, we describe a new rate control strategy for the MPEG video coding algorithm. The presented strategy assigns quantizer step sizes considering the spatial activity of the coded area, and changes the bit allocation to each coding mode dynamically so that the ratio of quantizer step sizes among different coding modes becomes stable at the given target ratio. The strategy was implemented on the Hybrid Extended MPEG (Bellcore's proposal to ISO/MPEG) in simulations. In the simulations, it was shown that the resulting ratio of quantizer step sizes among different coding modes is always close to the given target ratio while the coder also satisfies the constraint of the given bit rate.