1. A method comprising: describing one or more camera motions that occurred when sequential frames of a video were captured, the description for each said frame being provided by: a set of displacement curves that describe the one or more camera motions in respective horizontal (H), vertical (V), and radial (R) directions; and a mean absolute difference (MAD) curve that describes a minimum MAD value of the set of displacement curves; and detecting a shot boundary in the sequential frames by an abrupt transition of the minimum MAD values within the sequential frames, wherein the abrupt transition is indicated by a peak in the minimum MAD values described by the MAD curve.