S-Video to Composite

A basic S-Video to composite convertor can be made by a simple short of the two signal wires, and the two ground wires of the S-Video. Looking AT an S-Video plug (IE with pins) with the rectangular notch of plastic at the bottom, pin 4 is the pin at the top right, pin 3 is the top left, pin 2 is the bottom right, pin 1 is the bottom left.

In the simple bodge the results are useuable if absolutely necessary, but gives poor colour quality, and a ghosted image.

Pin 4 and 3 are connected straight to the signal pin of composite. Pin 2 and 1 are connected straight to the ground pin of composite.

In the better, but more complicated, version a capacitor is used. The value of this capacitor can be anywhere between 470pF and 10nF according to the web link :