Hi,
This browser is pretty good, but it needs its own video player. The iPhone stalk video player has no real features. A dedicated video player needs to have the ability to skip forward a predetermined amount of time, Picture in Picture, ability to scrub the video to a desired section, ability to control speed of the video running, ability to swipe the screen to control volume and brightness and the ability to share the video to another app or device.
Moreover the video downloaded needs to be stored in its own folder separate from the stalk Files app. The Files app has no security on the folder not allowing user to lock the content behind a password or biometric. Also, you need to include to ability to download any video without needing the feature present on the website to allow downloading.