Compared with the transform domain video watermarking algorithms, the spatial watermarking algorithms have weak robustness, but they have high visual quality. To ensure the video quality and satisfy the robustness requirement, a robust video watermarking algorithm based on spatial domain is proposed. Firstly, the video sequence is divided into five frames as a group. Secondly, We use luminance adaptive and edge mask to select the embedding area and determine the embedding strength adaptively. Then, the watermark information is embedded by fine-tuning the luminance trend of five consecutive frames. Finally, watermark information is extracted by the overall luminance of video sequences. Experimental results show that compared with the transform domain algorithms, the proposed algorithm makes a balance between robustness and visual quality, it improves the video quality and meets the robustness requirement under scaling, compression and recoding.
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