Data transmission system and method

摘要

A data transmission system for transmitting an encoded stream via a network, has a video transmission unit having a stream coding unit (34) for generating an encoded stream which is packetized in units of abandonable data, and in which a header including a packet identifier also serving as packet priority is added to each packet, and a stream shaping processing unit (02,12) for determining transmission or abandonment of each packet in the encoded stream generated by the stream coding unit (34) using the packet identifier included in the header of each packet in accordance with the designated bit rate.