1. A method, comprising: filtering out, by a processing system comprising a processor, redundant content in a group of content streams to generate a filtered group of content streams; performing, by the processing system comprising a processor, a coarse feature analysis of the filtered group of content streams at a multiple frame level; identifying, by the processing system, a subset of the group of content streams having a potential occurrence of a general feature according to the coarse feature analysis; performing, by the processing system, a specialized analysis on the subset at a frame by frame level to determine an occurrence of the general feature; generating, by the processing system, a weighted content description of the group of content streams based on the occurrence of the general feature; generating, by the processing system, statistics associated with the weighted content description according to a number of instances of the general feature; and generating, by the processing system, an indication that the statistics associated with the weighted content description for the general feature violate user defined rules for the filtered group of the content streams.