Alan doesn't know the term for the way they show vertical video on TV. Leo says it's because the video was shot on a mobile phone, and TV programs will use effects to blow up the original video and blur it out, placing it behind the video image. This is to just fill out the screen so it doesn't look like there's a problem with your TV Set. It's called PillarBox, and Leo says it's an easy effect that can be done with Adobe Premiere. Here's a link from YouTube on how it's done - https://www.youtube.com/watch?v=LdCLQ2DQ0NY.