What happens at the start of a film?

At the start of a film ... 

 The institution indent appears, this is the logo for the production company.

Example: Warner bros, Studio Canal and Disney.

   The Production company presents.
This is where the production company introduces the film to the audience

The title sequence
This is where the actors,cast,writers and director are mentioned at the start of a film, titles are usually placed over the opening sequence.

Music
This usually comes at the start of the film, it helps to set the scene and create a atmosphere

Establishing shot 

This show's the audience where the film is situated and gives them a better insight into the film

Key Characters 

In films Famous actors , the protagonist and main characters are usually the first people to be seen.

 This is what happens at the start of a film opening !