Video processing system, transmission device, and video processing method

A transmission device comprising:

• an audio signal generator configured to generate, as an audio signal, a control signal controlling operation of a light source in accordance with a video signal;
• a combined signal generator configured to generate a combined signal based on the video signal and the audio signal;
• and
• a transmitter configured to transmit the combined signal, via a predetermined interface capable of simultaneously transmitting an audio signal and a video signal, to a video output device controlling operation of the light source based on the control signal to thereby output the video signal to the outside.

A video processing method comprising:

• generating, as an audio signal, a control signal controlling operation of a light source in accordance with a video signal;
• generating a combined signal based on the video signal and the audio signal;
• transmitting the combined signal via a predetermined interface capable of simultaneously transmitting the audio signal and the video signal;
• receiving the combined signal transmitted via the predetermined interface;
• separating the received combined signal into the video signal and the audio signal;
• converting the audio signal into the control signal;
• and
• controlling operation of the light source based on the converted control signal to output the video signal to the outside.