A two-stage ρ-domain rate control scheme for H.264 encoder

In this paper, we present a two-stage rate control scheme for H.264/AVC encoder. In frame-layer, a novel bit allocation method is introduced, which estimate the target frame bits based on the coding statistics of the first stage. In MB-layer, we adopt the rho-domain rate control scheme to get the refine QP of each MB for residual signal recoding. Experimental results show that our algorithm can efficiently smooth the visual quality fluctuation between frames, on the basis of meeting bit rate constraints accurately.