Robust Video Watermarking Algorithm Based on H.264

Video copyright protection is an important concern under the circumstances of network. A novel video watermarking algorithm is proposed according to the feature of DCT coefficients in I frame image on H.264. It generates watermark information using low frequency coefficients and embeds the watermark in middle frequency coefficients to make it robust and blind. This method needn´t the original video when detecting the watermark. Results of experiment shows that this algorithm is real-time, imperceptible, blind and robust, thereby it can satisfy with the video watermark technology requirements.