A method and device for transmitting data packets from a server to at least one client concerns i) estimating a time lapse between the transmission of a successive first and second packet, on the basis of information relating to the first packet, the information being representative of whether or not the first and second packets transport image data from the same image, and ii) triggering and defining retransmission of the second packet, on the basis of said time lapse. In one embodiment, the client estimates the time lapse on the basis of the type of the second packet and on the basis of statistical results concerning the type of the second packet and requests the retransmission of a packet awaited for a longer time than that time lapse. In another embodiment, the server estimates the time lapse on the basis of the type of payload of a first packet to retransmit and of at least one second packet following the first packet to retransmit and spontaneously retransmits the second packet with the first packet on the basis of that time lapse.