A video signal processing apparatus includes: an input unit which receives a 3D input signal including a left-eye input signal and a right-eye input signal; an image processing unit which performs image processing on the 3D input signal inputted to the input unit, to generate a 3D output signal including a left-eye output signal and a right-eye output signal; an image converting unit which extracts one of the left-eye output signal and the right-eye output signal from the 3D output signal generated by the image processing unit, to generate a 2D output signal; a 3D output terminal which outputs the 3D output signal generated by the image processing unit; and a 2D output terminal which outputs the 2D output signal generated by the image converting unit, in parallel with the output of the 3D output signal from the 3D output terminal.