iOS HTML5 + fullscreen/native video player [on hold]

Is it possible to utilize the "native" video player spawned from the HTML5 video element, but control over the "bouncy borders" as illustrated in these capture:

https://youtu.be/tZGr_-XFGMk

https://youtu.be/NgO064g9EHM

Specifically we want it to be auto zoomed in already from the get go, with no letterboxing, bouncing or other border-y behavior. Additionally, is there canonical documentation and terminology to describe these behaviors?

Google searching these things always red herrings out onto non-native HTML5 control.

Environment for this case is specifically iOS + Safari


On that note. Tightly related, but separately, if HTML5 is our only option (apparently practically available since iOS 12.2) does anyone have examples of a full screen, no letterboxing/status bar, HTML5 video player working for iOS + Safari?