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As the internet users are increasing day by day because it is easy to transfer digital data between end users. By this new problem of data piracy has increased. There are different methods of watermarking has been proposed for protecting the digital data like video, audio, image, etc. There are number of researchers still working in the era of digital video watermarking from last few decades. This paper focuses on the video watermarking scheme for enhancing the privacy and authentication of a digital video during data transmission. Here the DWT and PCA techniques have been used. 2D DWT has been applied in LL part in order to enhance the robustness. With the help of modified cube selection approach, the water marks size and place of embedding is dynamic. The results show that proposed method gives the better results as compare to previous work.

A Low Frequency Band for Video Watermarking base on PCA Technique