A secured representation of data hiding in wavelet transform domain using video steganography

Hiding data in digital multimedia pertaining to text, image, audio and video plays a significant role in current trend for providing secured communication. Video Steganography is one of the emerging methods of sharing secret data by concealing the existence of data inside video files. The greatest advantage of using video for Steganography is that the large amount of data can be hidden into videos. Securing hidden data and minimizing the distortions to improve video quality after hiding data are the most important criteria which need to be considered as competing goals while designing a video Steganography system. A Secured Representation of Data Hiding (SRDH) is presented to enhance the security of hidden data using discrete cosine transform (DCT) coefficients of compressed video sequences as well as preserving the quality of video after hiding data using secured discrete wavelet transform (DWT). Video steganalysis is also examined to identify the videos containing hidden data. The performance of the proposed method is evaluated in terms of data embedding capacity, quality of service in terms of attack rate and noise level. Experimental results reveal the proposed method is more secure and produced better video quality as compared to existing algorithms.