Video Steganography

Abstract

Hiding messages for various security purposes had become high interesting topic on now days. Encryption provides the ability of data hiding. With the development of the technology, people tend to gure out a method which is not only capable in hiding a message, but also capable in hiding the existence of the message. Steganography was introduces as a result of those research. The current study is conducted in order to hide a video in a visual le. The researcher suggests changing the LSB (Least signi cant Bit) of the each byte of the carrier le. As this method do not add any new data but only change the LSB, this method do not increase the size of the carrier le unusually. Thus, the existence of the message cannot be detected. There are 2 approaches used in the current study. One is to use the OpenCV library and other approach is to use the avi ll32.dll library. The 1st approach contains some issues as after modifying the frames, the functions of OpenCV create some data padding. This causes to result some garbage data. The 2nd approach was tested and performed well. The system was evaluated by check- ing the ability of hiding the existence of the message and the ability of retrieving the message correctly. Results show that the system had addressed to its research objectives perfectly. The limitations for this research is, the library avi ll32.dll can only used for uncompressed avi les. In future, when there will be codec introduced for many video types, this method can be implement for all video types.