My source for parts tells me the cable you want is ...
No Longer Available
This item has been discontinued or can not be obtained at this time. Whenever possible, we try to provide an alternative solution for your consideration.
http://www.partstore.com/GetModel.a...CategoryName=&Keywords=cable&x=13&y=20&page=2
You could MAYBE use it on a Mac *IF* you had that cable AND a USB-->RS-232 Serial Adapter. MAYBE that would work. We have a USB---> RS232 Adapter and use it for two specific applications.
Good luck .... maybe you could try EBAY.
Part Number for that cable is ---> LSJA0276
They show an ALTERNATIVE Cable but that one also is NOT AVAILABLE
Part number for the alternative cable is ---> RS232C-2.5P
I know this info did not lead you to the cable, but hopefully it will help you find one.
EDIT: TRY THESE PEOPLE - They show it as available for around $17.00-->
http://www.pro-cam-electronics.com/cable.htm#0276
Go to that page it is about half way down.
I couldn't imagine a RS-232C connection ever being used for video ingest to a computer, even with an old VHS-C camcorder. WAYYYY too slow...
you know it is funny .... when shopping for a DSLR one of the featurers I wanted was to be able to connect the camera to a computer and control it from the computer. That is, set the camera on a tripod, compose and take the shot using the computer screen as the 'viewfinder'. Bascially it was sending video to the computer via the RS-232 cable.
I was told I had to buy a Professional DSLR with FIREWIRE to get that feature because it required the speed of firewire.
I found that odd becaue years ago, I had a Kodak digital camera ... and it had that feature with RS-232