How to make all formats work with windows movie maker?

I'm planning to make a movie off my phone and edit it using windows movie maker but it isn't compatible does anyone know of a way to maybe convert it or an update for windows movie maker.
Thanks

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).