https://phys.org/news/2018-06-instagram-unveils-video-youtube.html

Video will be available through Instagram or a new app called IGTV. It will give Facebook more opportunities to sell advertising.

It's the latest instance in which Instagram has ripped a page from a rival's playbook in an effort to preserve its status as a cool place for young people to share and view content. In this case, Instagram is mimicking Google's YouTube. Before, Facebook and Instagram have copied Snapchat—another magnet for teens and young adults.