YouTube had been slow to accept vertical video but they're on board now. Credit: Jaap Arriens/NurPhoto via Getty Images If you weren’t sure about vertical video before, you can be sure about it now.

Netflix is shaking things up for its mobile app experience by adding a vertical video feed, similar to YouTube Shorts.

Virool, a programmatic video distribution firm, is planning on introducing a vertical video ad unit, according to Adweek. The idea behind the format is it will better correspond with the way most ...