Method and apparatus for trasmitting and receiving video signal

A method and an apparatus for transmitting and receiving a video signal are provided. A digital video signal can be modulated by using sub-carriers. At this time, the modulated video signal can include a luminance frequency signal and a modulated color difference frequency signal. A method and an apparatus for transmitting a video signal can transmit the modulated video signal. A method and an apparatus for receiving a video signal receive the modulated video signal and can demodulate the modulated video signal.