Video information transmission system, and apparatus and program used for video information transmission system

A video information transmission system for transmitting compressed video data, comprising:

• transmission means, provided on a sender side, for packetizing the compressed video data in units of frames or in small area encoding units, and transmitting the packetized compressed video data;
• and
• transmission control means, provided on the sender side, for changing a transmission bit rate of the transmission means in accordance with a transmission bit rate input from an outside of the transmission control means through a network.

A video information transmission apparatus for transmitting compressed video data, comprising:

• transmission means for packetizing the compressed video data in units of frames or in small area encoding units, and transmitting the packetized compressed video data;
• and
• transmission control means for controlling transmission of the transmission means using congestion information on a network.

A video information transmission apparatus for receiving compressed video data, comprising:

• congestion information acquisition means for acquiring the congestion information on the network from received packets of the video data;
• and
• congestion information transmission means for transmitting the congestion information on the network to a sender side.

A video information transmission apparatus for transmitting compressed video data, comprising:

• transmission means for packetizing the compressed video data in units of frames or in small area encoding units, and transmitting the packetized compressed video data;
• and
• transmission control means for controlling a transmission bit rate of the transmission means in accordance with a transmission bit rate input from an outside of the transmission control means through a network.