A Compressed Video Steganography using TPVD

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Executive Summary

Steganography is the art of hiding information in ways that avert the revealing of hiding messages. This paper proposes a new compressed video steganographic scheme. In this algorithm, data hiding operations are executed entirely in the compressed domain. Here data are embedded in the macro blocks of I frame with maximum scene change and in block of P and B frames with maximum magnitude of motion vectors. To enlarge the capacity of the hidden secret information and to provide an imperceptible stego-image for human vision, a novel steganographic approach called tri-way Pixel-Value Differencing (TPVD) is used for embedding. In this scheme all the processes are defined and executed in the compressed domain.

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