Disclosed herein is a mechanism for indexing user uploaded videos. This mechanism can be used, for example, to detect unauthorized media content items in instances where the reference content is uploaded or otherwise received after the receipt of user uploaded video content. More particularly, the mechanism can create a video index of user uploaded video content or a subset of user uploaded video content that has met one or more criterion (e.g., a video that has been viewed at least a predetermined number of times) and a reference index of reference content including references files that have been activated subsequent to receiving corresponding user uploaded video content. Accordingly, activated reference content can be compared against the video index and user uploaded video content can be compared against the reference index to determine whether there is matching content.
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Granstrom, Johan and Konrad, Matthias, "Indexing User Uploaded Videos For Late Arriving Reference Content", Technical Disclosure Commons, (December 12, 2017)