To transmit data between a server and at least one client in a communication network, this data having to comply with a first transmission latency, for a first processing to be carried out by a first client, and with a greater second latency, for a second processing to be carried out by a second client: the server determines, from the data, taking account of the variable available bandwidth, a first data stream having a rate compatible with the first latency; it transmits this first stream to the clients; it determines, from the data not included in the first stream, taking account of the variable available bandwidth, a second data stream having a rate compatible with the second latency; and it transmits this second stream to the second client. The calculation of the rate of the first stream takes account of the unsent quantity of data of the second stream.