An Optimization Frame-Layer Rate Control Algorithm for H.264

H.264 video coding standard becomes quite popular due to its high coding efficiency. But its Rate control algorithm such as JVT-G012 has limitation in the Frame-Layer rate control. To overcome this limitation,this paper presents some improvement solutions based on the algorithm JVT-G012,such as introducing the ration of MAD to represent the complicity of the frame,optimizing the bit allocation algorithm in the frame layer based on its value of MAD ration and its distance to the I frame,adopting a method of frame skip to prevent the buffer overflow or underflow. Simulations show that this scheme is more efficient and can provide images with higher quality compared to the rate control in JVT-G012.