Abstract: The invention relates to a method of synchronizing two digital data streams with the same content, the method comprising the steps of: a) generating at given intervals for each of the two digital data streams S1 and S2 at least two characteristic numbers expressing at least one parameter characteristic of their content; b) generating from said numbers points D1 and D2 for each of the two streams S1 and S2 representing at least one of said characteristic parameters in a space of at least two dimensions, the points D1 corresponding to the stream S1 and the points D2 corresponding to the stream S2 that are situated in a time period T defining trajectories representative of the data streams S1 and S2 to be synchronized; c) shifting the time periods of duration T assigned to the digital data streams S1 and S2 relative to each other by calculating a criterion of superposition of said trajectories having an optimum value representing the required synchronization; d) choosing the shift between the time periods c