International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 12 | Dec 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 606 Data Hiding in Video Stream by Efficient Data Embedding MS. Rupali Wankhade 1 , Dr.G.R.Bamnote 2 , Ms. S.W. Ahmad 3 1 ME FT Final Year, Computer Science & Engineering, P.R.M.I.T&R,Badnera 2 Head & Professor, Dept.Computer Science & Engg, PRMIT&R, Badnera, Amravati 3 Astt. Professor, Dept.Computer Sci. & Engg, PRMIT&R, Badnera ----------------------------------------------------------------------***--------------------------------------------------------------------- ABSTRACT - Nowadays the need for security is becoming more important due to increased security requirements, data security is mostly provided with data hiding. It is an encrypted domain without decryption preserves the confidentiality of the content. In addition, it is more efficient without decryption followed by data hiding and re-encryption. In the novel scheme of data hiding directly in the encrypted version of H.264/AVC video stream, divided into three parts, which is H.264/AVC video encryption, data embedding, and data extraction with the help of data hiding code word technique. The cloud server can manage the video or verify its integrity without knowing the original contents, and thus to provide security and protection. A user can hide a data and may embed additional data in the encrypted domain by using substitution technique named code word. In order to adapt to different application scenarios, data extraction can be done either in the encrypted domain or in the decrypted domain. Furthermore, video file size is strictly preserved even after encryption and data embedding. KEYWORDS: Data Hiding in Encrypted, codeword Substituting, H.264/AVC Video Streams. I. INTRODUCTION It’s known to all that cloud computing has become a crucial technology, which can provide highly efficient computation and large-scale storage solution for video bits/bytes. Given that cloud services may attract more attacks and are vulnerable to unreliable system administrators, it is desired that the video content is invoked in encrypted form. The capability of performing data hiding directly in encrypted H.264/AVC video streams would hide of video content, which provides high security and privacy with cloud computing. For example, a cloud server can add the additional information (e.g., video notation, or authentication data) into an encrypted version of an H.264/AVC video by using data hiding technique. With the secure information, the server can handle the video or verify its integrity without knowing the original content, and thus the security and privacy can be protected. In advance feature to cloud computing, this technology can also be connected to other application scenarios. For example, when medical videos or surveillance videos have been encrypted for protecting the privacy of the people, a database manager may embed the personal information into the corresponding encrypted videos to provide the data management capabilities in the encrypted domain. Till now, few successful data hiding schemes in the encrypted domain have been reported in the open literature. With the increasing demands of providing video data security and privacy protection, data hiding in encrypted H.264/AVC videos will undoubtedly become popular in the near future. Obviously, due to the constraint of the underlying encryption, it is very difficult and sometimes impossible to convert the existing data hiding algorithms to the encrypted domain. The proposed scheme can achieve good performance in the three different ways. • The data hiding is performed directly in encrypted H.264/AVC video bit-stream. • This scheme can ensure both the format compliance and the strict file size preservation. • This scheme can be applied to two different applications by retrieving the hidden data it can either encrypted video stream or may be the decrypted video stream. 2. LITERATURE SURVERY There are number of methods used for data encryption and data hiding/embedding. Different research work can perform by many institude. To gives detail review on various methods of video encryption and data embedding. The related works in reversible data hiding techniques are as follows: In J.Tian [1] introduced a difference expansion technique. The data embedding was discovers by exploring the redundancy in the image. This technique was best in all the technique of literature survey because the holding capacity of secret data and the visual quality of embedded images. W.Kuo et al. [2] proposes an adaptive reversible data hiding method. A new scheme based on histogram and slope method enhancing the data hiding capacity and also the efficiency increases and maintains the high quality of image. K.Ming et al. [3] propose the method which has the combination of data hiding, half-toning and vector quantization technique. The embedding of gray scale image in other image was done. This scheme work as follows: a) Image compression from gray scale to half tone using half-toning process. b) Computation of