New frame-layer rate control algorithm based on H.264/AVC
基于H.264/AVC的一种新的帧一层码率控制算法

Rate control algorithm(JVT-H017) has been given in encoder reference software JM(Joint Model) 8.4.However,in JM a linear model is used to predict the MAD,which costs too much operations and exists deviations.A new frame-layer non-linear quantization parameter calculation model was proposed.Simulation results show that,comparing with JVT-H017,the H.264 coder using the proposed algorithm can control the bit rate more accurately and obtain a higher PSNR and visual quality.Especially when the two schemes are applied to the sequence with scene changes,no buffer overflow or underflow is guaranteed.