4:3 vs 16:9 framing on the iPad/iPhone

This video demonstrates the important difference between 4:3 and 16:9 framing on the iPad and iPhone.  This confusion can often lead to extra background along each side of the clip.  Generally this means the scene was framed using the 4:3 framing, but filmed in 16:9 leading to extra background.  iPads and iPhones always film in 16:9 regardless of what is shown on screen.