Abstract:

In order to reduce system delay,and meet the requirements of real-time,low time delay rate control algorithm for H.264/AVC.The algorithm was based on the characteristics of the H.264/AVC coding standard,fine layered rate control was performed and the forward rate control technology based on image complexity analysis and backward rate control based on feedback buffer capacity technology were integrated.Simulation results show that,compared with JVT-H017 algorithm,the algorithm can be effective in reducing the number of skipping frames to reduce delay and improves the timeliness of the video communication;better maintains the quality of image coding;PSNR dropped only by about 0.1 dB.The algorithm for computing the amount is small,and it is easy to implement.

Key words: rate control, low time delay, image complexity, quantization parameter