Abstract: A new feedback control scheme for media synchronization is proposed. The playout buffer level is checked to
detect asynchronism. Once an asynchronism occurs, a required corrective transmission frame rate of the media stream is fed
back to the sender to compensate for delay jitter and network anomaly to restore intra-media synchronization. With
intra-media synchronization within a single media stream such as audio and video performed, the receiver synchronously
initiates to play them back, and then inter-media synchronization between audio and video is required. Experimental results
show that in the case of an unincreased playout delay the scheme could remarkably decrease the probability of lost media
unit. The scheme could keep continuous presentation of a single media stream, and require inter-media synchronization between
audio and video.

Key words: playout buffer, delay jitter, intra-media synchronization, inter-media synchronizaiton