IFCO classifies trailers for cinema films and video works.

In the cinema, a trailer that has been classified 'Over 18' may only be screened with an 'Over 18' movie; a trailer classified as ’Over 16’ can only be screened with an ‘Over 16’ or 'Over 18' film, a 15A trailer can only be screened with a 15A or higher classification film, and so on. Consideration is given to the fact that parents/guardians are unlikely to have prior knowledge of the content of trailers in advance of their screening. A trailer will often get a lower cert than the movie itself, generally because it has been edited in a way that excludes scenes that may give the movie a higher cert.