Differences between a trailer and an opening of a film

Today I would like to talk breevely what are the main differences between trailers and an opening of a film, as I have explained before in this blog, a trailer is a short promotional film composed of clips showing highlights of the film, this is one way that the producers use to promote their movies, with this people can more or less know what is the film about. on the contray a film opening is shown at the beggining of the film, in there they show the names of the key production and cast members, these tittles are superimposed over a scene, allowing them andthe scene to be viewed. these sequences may help the viewer to built up the story plot or show a crucial moment, building up anticipation and atmosphere.

This is our film opening film from last year.

This is a trailer of the film mr and mrs smith.