Method for detection of film mode or camera mode of a sequence comprising at least three consecutive video frames, characterized in that it comprises the following steps: - determine a histogram of the video levels of each of the video frames, - calculate, for each of the video frames of the sequence, a value representative of the histogram difference, called histogram difference value, between the histogram of said video frame and the histogram of the next video frame, by: • calculating, for each video level i comprised between 0 and N and each offset value j comprised between -n and n, the difference between the occurrence value of the video level i in the current video frame and the occurrence value of the video level i+j in the next video frame, so as to generate at most 2n+1 occurrences for each video level i, • selecting, for each video level i, the lowest in absolute value occurrence difference, called minimal occurrence, from among said 2n+1 occurrence differences, and • adding-up the minimal occurrence differences of all the video levels so as to generate said histogram difference value of the current video frame, - compare the histogram difference value of each of the video frames of the sequence with at least one comparison value to generate, for each of said video frames, a parameter, of difference, whose value is representative of the character different or not to that of said video frame with respect to the next video frame, and - compare the pattern formed by the values of difference parameters of video frames of the sequence with a plurality of predetermined patterns to generate mode information (MODE) identifying the mode, film or camera, of said sequence of video frames. - determine a histogram of the video levels of each of the video frames, - calculate, for each of the video frames of the sequence, a value representative of the histogram difference, called histogram difference value, between the histogram of said video frame and the histogram of the next video frame, by: • calculating, for each video level i comprised between 0 and N and each offset value j comprised between -n and n, the difference between the occurrence value of the video level i in the current video frame and the occurrence value of the video level i+j in the next video frame, so as to generate at most 2n+1 occurrences for each video level i, • selecting, for each video level i, the lowest in absolute value occurrence difference, called minimal occurrence, from among said 2n+1 occurrence differences, and • adding-up the minimal occurrence differences of all the video levels so as to generate said histogram difference value of the current video frame, • calculating, for each video level i comprised between 0 and N and each offset value j comprised between -n and n, the difference between the occurrence value of the video level i in the current video frame and the occurrence value of the video level i+j in the next video frame, so as to generate at most 2n+1 occurrences for each video level i, • selecting, for each video level i, the lowest in absolute value occurrence difference, called minimal occurrence, from among said 2n+1 occurrence differences, and • adding-up the minimal occurrence differences of all the video levels so as to generate said histogram difference value of the current video frame, - compare the histogram difference value of each of the video frames of the sequence with at least one comparison value to generate, for each of said video frames, a parameter, of difference, whose value is representative of the character different or not to that of said video frame with respect to the next video frame, and - compare the pattern formed by the values of difference parameters of video frames of the sequence with a plurality of predetermined patterns to generate mode information (MODE) identifying the mode, film or camera, of said sequence of video frames.