1. A method to compare video sequences, the method comprising: determining a color histogram corresponding to an input video sequence based on color values of pixels sampled from a plurality of video frames of the input video sequence; adjusting the color histogram corresponding to the input video sequence based on a first reference color histogram corresponding to a first reference video sequence to determine a first adjusted color histogram corresponding to the input video sequence; and comparing the adjusted color histogram and the first reference color histogram to determine whether the first reference video sequence matches the input video sequence.