A method of providing a video stream which includes different video stream data for each of a plurality of layers is provided. The method includes: receiving from a transmitting apparatus a maximum transmittable layer level determined based on a state of a first network; receiving from a first receiving terminal a first maximum receivable layer level determined based on a state of a 2ath network; receiving from a second receiving terminal a second maximum receivable layer level determined based on a state of a 2bth network; and relaying the video stream using the maximum transmittable layer level, the first maximum receivable layer level and the second maximum receivable layer level.