1. A method of determining a representative image (RI) for at least one shot (SH) in a video (VD), a shot being a continuous sequence of images representing a scene viewed from a particular location, the method comprising: a shot sampling step (SHS) in which images are selected from a shot so as to obtain a continuous sequence of selected images (SI) that are evenly distributed throughout the shot; a stable shot portion identification step (SPI) of identifying at least one continuous subsequence (SB) of selected images that meet a predefined similarity test; and a representative image designation step (RID) in which an image is selected from a continuous portion (SP) of the shot that coincides in time with the longest continuous subsequence of selected images that meet the predefined similarity test, whereby the image that is selected constitutes a representative image (RI) for the shot.