Audio fun

I stumbled across the following YouTube “movie”. Go find your headphones and plug them in. Pay attention to which is left and which is right. I didn’t at first :P. And then just listen.
Now when you’ve finished, was the door behind or in front of you? Because for me it was back no matter if my headphones were reversed or not. Wouldn’t know why my brain prefers doors at the back, since they used right and left microphone it shouldn’t be posible to sense the difference between front and back.
The one with matches is an analogue.