Method and apparatus for transceiving data packet for multimedia data in variable size

A method for transmitting media data according to the multimedia service provided by the system provided by the present disclosure, the operation of determining the transport format and the transmission packet header structure generated according to the transmission requirements of multimedia constituting the media data; An operation of generating the basic transmission unit of the media data according to the determined transmission format and the header structure; Operation for packetizing the media data according to a basic transmission unit of the generated; And a media data transmission method including the operation of transmitting the packetized media data is provided.