Disclosed is a method performed by a system of a wireless communication network (100) for determining transmission conditions for a real-time media flow to be transmitted wirelessly to a first User Equipment, UE, (121) residing in a first cell (115) served by a first base station (110) of the network. The method comprises obtaining radio network statistics of the first cell (115), the radio network statistics comprising radio network data for individual of a plurality of UEs (122) in the first cell, UE throughput for individual of the plurality of UEs, and UE packet loss or packet delay for individual of the plurality of UEs, and obtaining, at a second time point occurring later in time than the obtaining of the radio network statistics, radio network data for the first UE (121). The method further comprises determining a predicted first UE throughput and a predicted first UE packet loss or packet delay based on the obtained radio network statistics of the first cell (115) and on the obtained radio network data for the first UE (121), and triggering sending of information of the predicted first UE throughput and of the predicted first UE packet loss or excessive packet delay to a sender of the real-time media flow to the first UE (121). A Forward Error Correction, FEC, optimization module (406) takes the predicted UE packet loss rate, the predicted UE throughput, and adapts theamount of FEC redundancy packets according to the throughput and packet loss rate. Further, the adapted amount of FEC redundancy packets are then used by the sender of the video when transmitting thevideo.