Distortion drift is a crucial factor for the embedding capacity and stability of H.264/AVC video in compression domain.In this work

considering practical application

we have exploited the substantive regularities that result in distortion drift.Accordingly

some improvements are made to adapt the influence of distortion drift.Firstly

a drift-depth strategy is proposed to improve the embedding invisibility and security

which can control the distortion range according to requirements of video quality.Secondly

through the analysis of the influence of different drift spreading range

more appropriate steganography positions are discovered to increase the embedding capacity and flexibility.Finally

a drift-depth control scheme is presented.Both analytical and simulation results show that our proposed scheme can improve embedding capacity and security

and meanwhile minimize distortion drift.