calculating, by a processing system including at least one processor, a plurality of scores for a test media clip using a plurality of authenticity algorithms, where the test media clip depicts a person, and wherein each authenticity algorithm of the plurality of authenticity algorithms generates a respective score of the plurality of scores which indicates a likelihood that the test media clip is authentic;

testing, by the processing system, each authenticity algorithm of the plurality of authenticity algorithms against a plurality of historical media clips, in order to determine, for the each authenticity algorithm, a reliability of the each authenticity algorithm in terms of being able to estimate authenticity;

deriving, by the processing system, a plurality of weights based on the testing, wherein each weight of the plurality of weights is associated with one authenticity algorithm of the plurality of authenticity algorithms;

computing, by the processing system, a cumulative authenticity score for the test media clip, by aggregating the plurality of scores weighted by the plurality of weights;

generating, by the processing system, a metadata tag with the cumulative authenticity score for the test media clip; and

annotating, by the processing system, the test media clip with the metadata tag.