Congestion control for media flows

An apparatus can include a congestion controller at a source endpoint node of a network that is configured to send substantially real-time media data at a variable sending rate to another endpoint node via the network. The congestion controller can be configured to compute the sending rate as a function of a predetermined target delay and feedback from the other endpoint node that includes a receive delay time for packets of the substantially real-time media data to be received at the other endpoint node from the source endpoint node.