Abstract: A video watermarking algorithm based on integer wavelet transform(IWT) is proposed.Firstly,the watermarking is preprocessed by using chaotic encryption and Arnold scrambling.Secondly,select randomly r frames from a given video with a key and each channel of selected frames is subdivided to non-overlapping blocks of size 8×8 and performs IWT for each selected blocks.Finally,according to visual masking to adjust adaptively the relationship of the two adjacent blocks corresponding the high-frequency sub-band to embed the watermarking. Experimental results show that the proposed algorithm is simple and has good transparency and robustness.