From HwB

i) there are two 7-pin versions of "hosiden" or "mini-din"-connectors: "7" and "7P". the s-video 7-pin type is the "7P" variant.

ii) in the pinout-drawing of HwB, pins 5 and 7 seems to be interchanged by mistake.

here's a link to a manufacturer's data sheet. refer to the "7P" section of the document:

wikipedia uses the same numbering of the pins as hosiden. refer to the "7-pin mini-din"-section: