Continuity

As well as directing I am also in charge of making sure that the continuity is correct throughout our trailer.

• Cointinuity is a system that was developed in the early 20th century to allow a clear and continuous movement of events/images in a film. It refers to the final structure of a completed film with evetns or scenes/sequences which have been arranged as if they have occured continuously when, they have in fact, all been shot out sequence.
• Continuity also refers to a film that is self consistent without any errors.

http://www.filmsite.org/filmterms6.html

This is a trailer I have found on youtube showing some of the worlds biggest films with continuity errors.