How to stream live footage from my Nikon D7000 onto my Mac computer?

I need to know how to stream live footage from my Nikon D7000 onto my Mac computer.

Yes you can there's a method called live capture. If you're wanting to stream video you will need to use the video output on the camera. If you want to stream pictures straight from the camera using the live capture feature in programs such as Adobe light room. Some of the Nikon cameras like the D 7000 might be a bit tricky but there's definitely lots of information online using custom plug-ins and drivers to allow you to do let capture it is not natively supported in the particular version of Adobe light room or other photo editing software you may be using