Object deletion is a common video forgery in digital videos.An efficient algorit hm based on the video inpainting is proposed for detecting object deletion.When removing the moving object,it is necessary to complete the forged region by video inpain ting,thus the artificial trace of inpainting is introduced in the forge d video.Through in-depth analysis of the remaining traces in the forged video,the symmetrical frame difference method is used to detect the object remo val area.if the forged video is uncompressed.If the forged video is compressed,the video tampering dete ction can be accomplished according to the inconsistency of optical flow orientation.Experime ntal results show that.The proposed algorithm can effectively detect the operation of moving object deletion and locate the tamper ed region in spatial and temporal domain.In addition,the algorithm does not depend on the original vide o,and its computational complexity is low.