A Two-Layer Real-Time Rate Control Algorithm Based on Lagrange Optimum Algorithm

摘要

Because of the iterative process in the rate control algorithm of the H.264 draft, it is not suitable for real-time trans-mission. A two-layer real-time rate control algorithm based on the Lagrange optimum algorithm is proposed. This algorithm consists of two layers, namely, the group of pictures (GOP) layer and the frame layer. The simulation results show that the proposed algo-rithm is competitive in terms of peak signal-to-noise ratio (PSNR), real bitrates and the Q-value among frames over the original algo-rithm.