A method includes comparing each textless video clip to a plurality of portions of the video file corresponding to the full length video file; determining each textless video clip being similar to only one portion of the video file as being a matched pair; for each matched pair identifying if their text content is different, wherein identification of a different text content dictates that the textless video clip corresponds to a portion of the video file having overlaid text; training a classifier to predict whether an area of text detected in the full length video is overlaid text; determining the probability of each portion of the full-length video having overlaid text; determining each textless video clip being similar to more than one portion of the video file as being a potential matched pair; and resolving the potential matched pairs with the determined probability.