A free mod for Mount & Blade II: Bannerlord, by Lizhenhuan1019.
The Cinematic Camera mod allows you to adjust the camera settings to make a cinematic video. It is an RTS (Real-Time Strategy) camera mod, which means you can use it in a battle and it will work as a real camera. You can move the angle by using keys and it has several settings you can change, like FOV (Field of View), depth of field, moving speed, and so on.
You can also set player characters to be vulnerable to avoid them being accidentally killed. This way, you can keep your RTS game going even when you are offline.
The configs are also saved in an XML file, which you can edit manually.