H.264 video encoder implementation and optimization for PNX1500
Shi Zhi-qiang · Computer Engineering and Applications Journal · 2007
Gives an implementation of H.264 video encoder in a video monitoring system based on PNX1500 DSP platform,and proposes a series of optimization solutions:Firstly,calculates half-pixel interpolation using the MBS hardware of PNX1500;Secondly on H.264 algorithm level,predigests motion estimation and brings forward skip mode decision for macroblocks;Thirdly on code level,improves coding speed by using custom operations and compilation optimization options.Simulation results show the optimized encoder can encode CIF-format video stream in real time.