In a method for adjusting data streams during a video conference the audio-based and video-based real-time communication to be transmitted to various receiver units with respective resource loads that vary over time, a server unit receives an incoming data stream from each of a multiple number of transmitter units. The server unit generates from such incoming data streams a multiple number of outgoing data streams, each having a different compressed data rate. The server unit receives from the specified receiver units, their resource loads (varying over time) in chronological intervals and accordingly subjects the data rates of the compressed outgoing data streams to a controlling adjustment to the resource loads of the respective specified receiver units. The outgoing data streams so adjusted are sent to the specified receiver units.