A video metadata application and its verification test using NIPEG-7 description and watermarked content ID

摘要

Because of the rapid progress of broadband networks and the rise of digital broadcasting, there is a great demand for creation of an environment for digital content production and establishment of system for smooth content distribution. Yamagata Video Archive Research Center (YRC) has been involved in the development of technology for a large-scale video archive system and in research activities, through various verification tests, for applicable operation of the system. We adopt a MPEG-7 description scheme for constructing retrieval keywords in order to deal with video distribution and to achieve easy content retrieval for users outside of YRC In addition, we use a watermarked unique code (cid) system propounded by the Content ID Forum (CIDF) for managing the content identification number. A part of content ID is watermarked on video itself and a time code, which is extracted from an original tape, is watermarked for editing purposes to keep MPEG picture quality in an edited video stream. We describe the research through tests from content retrieval to content distribution.