"Vertical vs. horizontal is a huge debate in the online community. Due to YouTube aspect ratios, most people believe all videos should be shot with your phone on its side, creating the familiar horizontal image like you’d see in a movie theater. If you shoot the footage vertically and then upload to the web, there are huge black spaces on either side, making the footage look amateurish and small. But there’s a movement embracing the vertical format, and nowhere is it seen better than Rotterdam in the Netherlands. There, a group of filmmakers have started the Vertical Cinema project – a traveling film festival featuring movies specifically shot with a vertical orientation."