Here are some examples of diegetic sound in the film:
* Dialogue: All the conversations between characters are diegetic sound, as they are sounds that exist within the world of the film.
* Sound effects: Sounds like the Hogwarts Express train, footsteps in the castle, or the opening of doors are all diegetic because they are part of the film's world.
* Music played by characters: When characters play instruments like the Hogwarts choir or Hagrid plays his recorder, those sounds are diegetic because they are happening within the story.
Diegetic sound is essential to creating a realistic and immersive experience for the audience, helping them feel like they are part of the world of the film.