%A LI Na, WANG Zhong-yuan, HE Zheng, FU You-ming and CHANG Jun %T Novel H.264 Rate Control Method Based on TMN8 Model %0 Journal Article %D 2015 %J Computer Science %R 10.11896/j.issn.1002-137X.2015.06.025 %P 111-114 %V 42 %N 6 %U {https://www.jsjkx.com/CN/abstract/article_2929.shtml} %8 2018-11-14 %X To address the drawbacks of TMN8 rate control model in real-time video communications in practical scena-rios,this paper proposed three technical modifications:target bit rate computation,center-oriented perceptual weighting,and layered rate control.Meanwhile,a two-pass motion estimation approach was also established to deal with the dilemma of cause and effect between RDO estimation and rate control,in which the motion information generated by pre-estimation stage is further used to speed up and optimize formal encoding process.A high-precision H.264 rate control method employing TMN8 model was ultimately implemented on the basis of the presented improved techniques and the two-pass approach.Simulation experimental results and practical applications in SIP video conference system demonstrate that this method does play a positive effect on the visual experience of real-time video.