Considering the status of surveillance video pixels growing gradually, this paper proposes a video encryption method using pure optical means,which makes video encryption rate equ al to the speed of light,so that it can completely solve the existing encryption algorithm′s pressure brought by th e sharp increase of image data.In this paper,the double random phase encoding system is modified by ultra-chaotic system,and the ultra-chaotic sequence generation process is deduced.So we can improve encryption efficiency while greatly enhance the video transmission security.At the same time,in order to reduce complexity of system and increase the feasibility of system,using a color image channel separation technology is used to achieve the color video encryption using one single channel. The simulation result shows that the proposed encryption technology can achieve the desired effect of video encryption.At las t,Compared with double random phase encoding optical encr yption method,the double chaos phase encoding video encryption method pro posed in this paper has a higher anti-attack capability for the adjacent pixel correlation coefficient.