A method comprising: capturing a video stream; segmenting the video stream into a plurality of video segments; splitting each segment of the plurality of video segments into a plurality of video frames comprised therein; for each one of the plurality of video segments: determining a color mass for every individual video frame of the plurality of video frames by summing color value coordinates comprised in the individual video frame; aggregating a result of the determining into three series of color value coordinates for every individual video segment over the plurality of video segments, each one of the three series of color value coordinates corresponding to a distinct color element; for each one of the three series of color value coordinates: applying a discrete Fourier transform to the series of color value coordinates; determining, as a result of the discrete Fourier transform, an intensity of a plurality of frequencies; determining a peak frequency from among the plurality of frequencies; and determining at least a portion of marking information as a result of the determining the peak frequency; and combining the determined at least a portion of marking information for each one of the plurality of video segments, thereby determining the marking information. capturing a video stream; segmenting the video stream into a plurality of video segments; splitting each segment of the plurality of video segments into a plurality of video frames comprised therein; for each one of the plurality of video segments: determining a color mass for every individual video frame of the plurality of video frames by summing color value coordinates comprised in the individual video frame; aggregating a result of the determining into three series of color value coordinates for every individual video segment over the plurality of video segments, each one of the three series of color value coordinates corresponding to a distinct color element; for each one of the three series of color value coordinates: applying a discrete Fourier transform to the series of color value coordinates; determining, as a result of the discrete Fourier transform, an intensity of a plurality of frequencies; determining a peak frequency from among the plurality of frequencies; and determining at least a portion of marking information as a result of the determining the peak frequency; and determining a color mass for every individual video frame of the plurality of video frames by summing color value coordinates comprised in the individual video frame; aggregating a result of the determining into three series of color value coordinates for every individual video segment over the plurality of video segments, each one of the three series of color value coordinates corresponding to a distinct color element; for each one of the three series of color value coordinates: applying a discrete Fourier transform to the series of color value coordinates; determining, as a result of the discrete Fourier transform, an intensity of a plurality of frequencies; determining a peak frequency from among the plurality of frequencies; and determining at least a portion of marking information as a result of the determining the peak frequency; and applying a discrete Fourier transform to the series of color value coordinates; determining, as a result of the discrete Fourier transform, an intensity of a plurality of frequencies; determining a peak frequency from among the plurality of frequencies; and determining at least a portion of marking information as a result of the determining the peak frequency; and combining the determined at least a portion of marking information for each one of the plurality of video segments, thereby determining the marking information.