Why do u want two side by side videos when feed is coming from one source. Its not going to be 3d either. I hope u understand what ure asking. Two images for each eye is unnecessary if images are going to be same.
Take a black cardboard, make two circular holes, place two 2x lens, mount whole setup in front of a 5 inch display and make a headmount box for it. Going to get same result as with two display. If u want fisheye, use 2.1 lens in camera.