Video watermarking based on motion vectors of H.264

摘要

Video watermarking is an efficient technology that has been developed primarily to tackle the problem of copy right protection and authentication. In this paper, video watermarking scheme is applied by exploiting the motion vectors of P-frame and the region information of the motion vectors is used to insert the watermark bits. The imperceptibility of the watermarked video is enhanced as we are embedding the watermark bits based on the even and odd positions of the motion vectors and thus only less than half of the points need to be searched which reduces the computational complexity. According to the Experimental results, the PSNR is same after embedding the watermark and has the capability to control the payload and at the same time can reduce the time of motion estimation with less impact on the video bit rate.