I think it's this vintage microphone connector.
Note the data sheet below is for a female plug that supposedly can be converted to male, but I'm not totally confident it's the right thing, because they don't show the male configuration. You would have to solder this to the end of a coax cable yourself. An alternative would be to replace the obsolete connector on the VCR with a BNC jack.
https://www.mouser.com/ProductDetail...caAufKEALw_wcB
http://www.switchcraft.com/Specifica...spx?Parent=810