The widespread of the internet and World Wide Web has changed the way digital data is handled. The rapid growth of digital media and communication networks has created an urgent need for self-contained data identification schemes to create adequate intellectual property right (IPR) protection technology in particular for image and video data [13]. . By embedding an invisible and robust watermark into the image or video data, unauthorized copies can be traced and copy protection schemes can be implemented. There are several approaches to embed a watermark into an image or video frame [1]. In Steganography embedded data is invisible to a human observer. Information Hiding refers to techniques which are used for embedding additional data in host media. Here blind data hiding technique in video is proposed. The main aim of the proposed system is to send text information behind a video which is invisible for human eye. Here the system is Proposed for high capacity, robust and blind Information Hiding The in DCT(Discrete Cosine Transform) domain. A new encoding technique called Class Dependent Coding Scheme (CDCS) is used to increase the embedding capacity, which can convey the same information using less number of bits. High imperceptibility is achieved by selecting efficient DCT blocks for Embedding data using energy thresholding scheme[11]. On review, of a digitized video before and after a message was inserted, will show video files that appeared to have no substantial visual differences. The DCT is used to embed the file, which casts embedded data into the selected region in the DCT domain. Embedding the file in the selected region gives rise to invisibility.

Information Hiding DCT Video CDCS