Steganography over video file by hiding video in another video file, random byte hiding and LSB technique

Steganography is an art of hiding the secret data or information inside the digitally covered information. The hidden message can be text, image, speech (audio) or even video and the cover can be chosen accordingly from either a text, an image, an audio or a video. The traditional method uses image as a cover which has the limitation of embedding dimension. So, cover should be a video to overcome the limitation of embedding dimension. Nowadays, the use of a video based steganography is common and numbers of steganalysis tools are available to check whether the video is stego-video or not. Most of the tools are checking for information hided by LSB, DCT, Frequency Domain Analysis etc and finds whether the video has hidden or secret data or not. In this paper, the video based steganography techniques are discussed specifically, video in another video technique this means that the cover is video and MATLAB based implementation is done to simulate the results.