The Andor 1 is a standalone video player, not a usb-to-composite adapter. So, in a roundabout and not-realtime way you can use it to get video from your mac to your VC: if you create a video file on your mac, you could then put it on a SD card and put that SD card into the Andor, then the Andor could play it via the composite output and your VC could take that as a monochrome (not color) input. But I doubt that’s what you had in mind.
Here’s a thread about going from mac to vc: Mac Laptop into Visual Cortex