An embodiment of the present invention includes a buffer, a selector, and
an analyzer. The buffer stores at least a default stream coded by a
multiple description (MD) coding and a restart stream coded by a
predictive coding. The default and restart streams correspond to a media
content. The selector selects a transmit frame from the default and
restart streams according to a transmission status. The transmit frame is
transmitted to a receiver. The analyzer provides the transmission status
based on feedback information provided by the receiver.