1. A method for inserting an advertising clip at an insertion point, between two pictures of a sequence of video pictures, called video sequence, said method comprising: generating a salience map representing the salience of the video sequence only before said insertion point, said insertion point of the video sequence corresponding to a shot change in said video sequence; generating, for each advertising clip of a set of advertising clips, a salience map; determining, for each advertising clip of said set of advertising clips, a degree of similarity between the generated salience map of the video sequence before the insertion point and the generated salience map of said advertising clip, wherein determining the degree of similarity for the advertising clip comprises: selecting, from the salience map of the video picture and from the salience map of the advertising clip, the N most salient points of the map, called maximum salience points, said points being separated from each other by at least m points, N being greater than or equal to 1, determining, for each of the N maximum salience points of the salience map of the video picture, the Euclidean distance between said point and the maximum salience point in the salience map of the advertising clip, and calculating the average of the N Euclidean distances determined, the degree of similarity for said advertising clip thus being inversely proportional to the calculated average, said degree of similarity being representative of the comparison between the location of salience zones on both said salience maps; selecting, among said set of advertising clips, the advertising clip having the highest degree of similarity; and inserting the advertising clip selected into the video sequence at the insertion point.