Abstract: Internet is the media due to which it is possible to transfer data from one place to another place with very high speed. But it is very risky to transfer data over internet. Hence to maintain privacy and to prevent an unauthorized person from extracting information steganography technique is used. Steganography is the science of hiding secret information. The secret information is in the form of text, image, audio and video. This secret information can be hidden in the text, image, audio and video. Hiding secret information in video file is called as video steganography. In this paper, review on various video steganography techniques is presented.

Keywords: Video steganography, Data Hiding, Encryption, PSNR