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Satellite television, the Web and the increasing deployment of digital video and audio have changed the ways in which media content is used. Media content is increasingly being reused (rebroadcast and re-purposed). The Web also allows for content to be downloaded by users (a prime example is MP3). This digitization of media along with the changes in the distribution mechanisms gives rise to a new problem termed media tracking. Media tracking is the problem of keeping track of when and where a particular known piece of media has been used. Examples include, tracking when (at what time) and where (which channel) a particular TV commercial was aired. Analogously, on the Web, when (data and time) and where (URL) was a particular piece of content available. This paper presents a novel feature based indexing scheme, which can be used as the search or detection engine in the media tracking process. The technique presented performs the same function for temporal media streams as Internet search engines do in the text domain.
Hampapur et al. (Thu,) studied this question.