With the rapid development of computer and communication networks, multimedia distribution through the internet has become very popular. As the internet is an open system, the transmitted data is easily duplicated, altered or even stolen, and the enforcement of multimedia copyright protection has become a challenging issue. Digital video watermarking provides the copyright protection of the video by hiding appropriate information in the original video. Since video signals are always stored and transmitted in the compressed format, it is unfeasible to initially decode the video sequence,...