Home > News > Press Releases > 2013 Press Releases > Announcement of High-Speed Generation Technology Development for Digital Watermarked Video Content news Topics Events / seminars Press release 2013 year 2012 2011 2010 2009 2008 2007 2006 Year 2005 2004 2003 Realization of embedding of user information To prevent illegal uploading of distributed videos Notice of development of high-speed generation technology for digital watermarked video content October 8, 2013 Full release (574KB) KDDI R & D Laboratories, Inc. (hereinafter, KDDI R & D Laboratories) and our company have jointly developed a technology to generate video content with different digital watermarks embedded for each user (content purchaser) at high speed. Using this technology, it is possible to generate 10-minute digital watermarked video content in about 2 seconds (bit rate 7 Mbps, size about 500 MB), which makes it possible to achieve a practical level of speedup. By using this technology in the video content distribution service, it is possible to easily identify the actor by digital watermarking when the distributed video is illegally uploaded. background While the distribution of video content is rapidly advancing with the expansion of the content service market, it is said that the expansion of illegal distribution of video content on the Internet threatens the regular distribution. For this reason, each service provider uses its own encryption / decryption technology and playback application to protect content with DRM (Note 1) and digital watermarking (Note 2) that embeds copyright information and user information in video files. ) Is used to prevent illegal distribution. However, DRM costs money to develop and maintain its own content protection technology, and digital watermarking takes time (about the real time of video content) to embed user information and subsequent encoding, so it is electronic for each user's distribution request. It was difficult to embed a watermark. (Note 1) A general term for technologies that protect the copyright of digital content and restrict its use and copying. It is common for users to use specific playback software (such as iTunes or Windows Media Player) to decrypt and play encrypted content. The key used for encryption is often hidden in the playback software or downloaded from the network. (Note 2) Technology that embeds specific information in multimedia data such as images, videos, and sounds with almost no effect on image quality or sound quality. Achievements this time In this technology, different digital watermarks are embedded in one content, several types of encoded video content are prepared in advance, and content files are extracted, recombined and distributed based on user information at the time of distribution. Since the difference between the previous and next frames is used in the video encoding process, if you simply extract / combine in any frame, the picture will be corrupted or deteriorated, but in this development, the encoding process and extraction / combination should be done properly. Doing so solves this problem. Furthermore, in order to be able to extract user information from some video data without the entire video, the amount of information to be embedded in the frame and the amount of video data to be extracted before recombining are tuned. As a result, we were able to optimize the video to a user-identifiable level if we had a video of several tens of seconds to several minutes. Digital watermark for video used this time The digital watermark for video used in this technology development was commercialized by us, and has the resistance to read the information of the digital watermark even if the video content is processed in various ways. In addition, the change in pixels due to watermark embedding is so small that humans cannot usually recognize it. Future outlook In the future, we will aim for early commercialization as a service for video content distributors, and aim for even higher speed generation. Contact For inquiries regarding this press release, please use the inquiry form . Related information Related products / services Video digital watermark solution for high-definition Return to top of page