The video water marking scheme based on MPEG-4 motion vector

The watermark embedding scheme is a improved algorithm of video watermarking. Basing on the Jordan motion vector watermarking algorithm and the human visual identification system and the secret key principle, we divide the motion vectors into two types. And according to the specific circumstances of motion vectors, we embed the watermark into the selected motion vectors, then the extraction process doesn´t need the original video. The image of experiment proves that the algorithm has good invisibility and concealment.