Estimated bit stream level video quality method and apparatus

A method of estimating video quality level for a bit stream, wherein the video quality of the video relates to error concealment, error concealment and before the bitstream - on the order of the execution, the method comprising: extracted from the video bit stream, and / or wherein calculating a plurality of global conditions, at least for the lost MB extraction and / or effectiveness of a plurality of local feature calculation, by simulating the error concealing method used in the error concealment in the past for each of the ( or at least) MB calculate the value of each missing error concealment level of effectiveness, and provide error hiding calculated level of effectiveness as the estimated video quality level of visible artifacts.