1. A method for detecting a commercial in a video data stream by evaluating descriptor information provided from a plurality of descriptors indicative of commercial or non-commercial features, the method comprising the steps of: detecting a plurality of video data frames in the video data stream; analyzing for each video data frame of the plurality of video data frames sub-areas designated for placement of an essentially static logo when broadcasted; generating from the analysis of the sub-areas static area descriptor information; deciding for each video data frame whether the video data frame is a separating frame by analyzing for each video data frame a plurality of sub-images, which includes the steps of: detecting a separating block of separating frames and detecting a time distance of the detected separating block to a previous separating block of separating frames; generating separating block descriptor information; and using the static area descriptor information and the separating block descriptor information to evaluate the descriptor information.