A rate control method with preanalysis for real-time MPEG-2 video coding

This paper proposes a bit rate control method with a preanalysis for real-time MPEG-2 video coding. The rate control method allocates bits to pictures according to picture coding complexities obtained from the preanalysis. The bit allocation is adjusted to satisfy the VBV constraints. The method is evaluated by MPEG-2 video encoding experiments for sequences whose characteristics significantly change, such as scene changes or fade scenes. The experimental results show that the picture quality is improved by the proposed control method. The PSNR is 2 to 3 dB higher than the conventional method without a preanalysis in difficult scene periods. The method is very effective when a certain coding delay is allowed