Video automatically zooms when in mobile. Mobile app

I want video to autoplay and play in the spot where I placed it. However no matter what method I use 1) a Video element or 2) an HTML element with a script, the video zooms out and takes the entire screen when played. It goes back to placed when the screen is “pinched in”.

It could be that IOS does this automatically. Does any one know how to get this accomplished? Thanks