Understanding S-Video Connector Wiring

A close-up photo of a modified audio jack with wires soldered to its terminals, labeled with technical terms: 'Luma +', 'Chroma +', '75 Ohm Resistor', 'Luma ground (connected to input jack ground)', and 'Chroma ground'. The image shows a DIY modification of an audio jack to handle video signals, with a resistor and color-coded wires. The background is a wooden surface.