Invisible Watermarking: New Approach for Video Piracy Detection

Today piracy is one of the most important issues that the owners of multimedia contents are facing now. So it becomes necessary to protect the copyright of digital media. The new technology proposed to solve the “problem” of enforcing the copyright of content transmitted across shared networks is Invisible Digital Watermark. It is a technique of steganography that allow a copyright holder to insert a hidden message (invisible watermark) within images, sound files, moving pictures and even raw text. To watermark a video it is divided into frames then extract each bit of a frame and modify it with reference to original RGB value to embed a watermark in it. The location of the embedded text is maintained as a key file and the frames are integrated as a video again. The slight changes in RGB value scattered across the frame makes it impossible to visibly detect the difference when compared to original video. To detect the piracy of video using the key file the copyright information is extracted from the watermarked data. From the copyright information it is possible to find the source of piracy and thus necessary action can be taken.