Extensive experimental results show that p is still linear with the bit rate of a macroblock slice in H.264 via p-domain source modeling. The bit allocation of the proposed method is achived according to the percentage of bit count of each macroblock slice in the first RDO. Experimental results show that the proposed rate control algorithm can guarantee the same coding efficiency

achieve significantly smaller bit rate estimation error and be better matched to the target bit rate than JM8.4 rate control algorithm.