The present invention provides a system and method for radio video
transmission which switches a radio frequency band or a compression rate
for video data to enable appropriate video transmission even if a radio
environment is degraded. A pair of a transmitter and a receiver transmits
video data in the radio environment. The receiver periodically transmits
a status message to the transmitter. If the transmitter fails to receive
reception of the periodically transmitted status message, the failure is
used as a trigger to cause the transmitter to switch the channel (radio
frequency band) or the video data compression rate. It is therefore
possible to switch the radio frequency band or video data compression
rate for the transmitter and receiver even if the radio environment is
degraded.