Key Conventions of an Opening Title Sequence

• Name of Production Companies
• Director
• Producer/Exec. Producer
• Top Billing Actors
• The Movie Title
• Indication to Character Type
• Indication of Place + Period
• Information on Genre
• Introduction to Theme Tune

These are all Conventions that an opening movie sequence should have, in order to be successful.
These are important to the viewers so they are aware of the movie they are watching.
Showing which Actors/Actress are in the movie gives an indication of the movies popularity.