Large capacity information hiding for H.264/AVC

In this paper, a large capacity of data hiding algorithm was proposed for H.264/AVC, with lower bit-rate can be achieved in the mean while. The main idea is to hide the information into appropriately selected motion vectors in Inter frames, we modulate LSB bit of the x and y sub-components of each MVD data to hide 2 bits information, in this way we can exploit the large hiding capacity as well as the lower bit-rate increase. The data can be extracted just by decoding part of the motion vector difference and do not need the original video stream, which meets the requirement of the modern detection of real-time perfectly. Simulation results show that the algorithm can achieve a great embedding capability as well as the slight bit-rate increase and visual distortion.