Abstract: An RFD data creation apparatus 1 generates RFD data, for respective identification data of a plurality of content data, indicating by associating the identification data, reproduction timing of content data corresponding to the identification data in a reproduction apparatus 9, and data for specifying other content data to be reproduced simultaneously with the content data corresponding to the identification data by the reproduction apparatus 9, and transmits to the reproduction apparatus 9 via a network 8.

Abstract: An RFD data creation apparatus 1 generates RFD data, for respective identification data of a plurality of content data, indicating by associating the identification data, reproduction timing of content data corresponding to the identification data in a reproduction apparatus 9, and data for specifying other content data to be reproduced simultaneously with the content data corresponding to the identification data by the reproduction apparatus 9, and transmits to the reproduction apparatus 9 via a network 8.

Abstract: The invention relates to an audio/video data transfer system, an audio/video data transfer method, and an audio/video server for enabling audio/video data to be easily transferred between the audio/video servers. Video servers 1 and 3 connected by the Internet are constructed as FTP servers. When AV data is transferred from the server 1 to the server 3, a computer apparatus 2 for controlling the server 1 communicates with a computer apparatus 4 for controlling the server 3 and discriminates whether the server 3 can receive the transferred AV data or not. If it can be received, the computer 2 sends a command “PASV” to the server 1 and allows an IP address of an empty communication port of the server 1 to be notified. The IP address is transmitted to the computer 4. On the basis of the IP address, a command “PORT” is sent to the server 3 and a communication port of the server 3 is set.