You may connect pin 4 to ground, pin 3 to rca center pin, extra 2 wires (ground and svideo aren't used), or use following scheme with capacitor:
Y-Ground >-----+
+---
RCA Composite Ground
C-Ground >-----+
Y >------------+
+--- RCA Composite Signal
C >-----||-----+
-||- is a 470pF Ceramic capacitor
| Pin S-Video | Description | Pin RCA | Color Coding |
|---|---|---|---|
|
1
|
Ground (Y)
|
Ground
|
BLACK
|
|
2
|
Ground (C)
|
Ground
|
YELLOW
|
|
3
|
Y - Intensity (Luminance)
|
Signal
|
RED
|
|
4
|
C - Color (Chrominance)
|
Signal through 470pF Ceramic Capacitor (capacitor is optional)
|
WHITE
|
Notes:
Larger capacitor values will also work, but cause picture to become softer.
