Outlines are often used during the design process to create a picture for their film. This is mainly used by the writers of the film because it allows them to create a scene, setting, character placement, and what type of dialogue they're going to use for the scene. This outline that is created directly correlates with the scene that turns out on the big screen, and is often edited during the filming process. Also, the outline can help other people on sets such as the producers, directors, and managers understand where the film is heading and can prepare for other things outside of the script.
The outline for my movie opener has four main parts. The first part of the outline is to establish who my main character is and how the rest of the movie is going to portray him. I'm going to do this by opening with many different shots/angles of my character being themselves. This will give an idea of who my character is for the audience without having any dialogue yet. The second part of the outline is to create mystery and engage my audience into thinking about what's happening. I want to do this by having the character do something that the viewers would not expect. By doing this not only would the audience want to know more about the character, but it would keep the audience on their toes. The third thing on my outline is to show the enemy. For this part of the scene, the main character is going to acknowledge the fact that people are holding him hostage. By doing this it gives the audience a type of person or thing to expect, when it comes to the villain, for the rest of the movie. For the last scene, I want to create a moment or action that will carry on smoothly into the rest of the movie. I plan on doing this by establishing the next act of the movie. By establishing the next part of the movie, it will show where the movie will go after my opener ends.
https://screencraft.org/blog/21-movie-treatments-and-outlines-that-every-screenwriter-should-read/