 The ratings fee is based on the film's running time instead of negative cost, and the ratings are based on the level of maturity of the material's intended audience, rather than the film's content.While the FAB ratings system is not as recognized or well known as the MPAA's rating system, it is in use by a number of commercial video distributors for direct-to-video releases that would have been impractical to submit to the MPAA.The Film Advisory Board has six ratings categories.