Timeline.

Timeline for Se7en:

Timeline for Vertigo:

These timelines reveal that opening sequences last for sometime after two minutes but both differ in the credits. Within the first second instead of the title of the film showing (as many people would think), it is actually the production company. However, the next credits seen in these two films are different. In Se7en the next credit to be seen is 'an Arnal Kopulson Production' which is the people who put money into in film. Whereas, in Vertigo the name's of the actors is what's seen. The name of the director soon follows afterwards in both cases. The next credit in Vertigo is the film title, however, in Se7en it's the names of the actors and then the film title. Co-stars are then credited but are shown in different ways. In Se7en they are credited independently or with others but in Vertigo they are shown all together with a heading that reads 'Co-Stars'. After, both opening sequences go on to credit different people. Se7en's credits shown are of casting agency, music by, costumes designed by, edited by, production designer, director of photography, co executive producers, executive producers, written by and produced by. On the other hand, in Vertigo the next credits to be shown are screenwriters, director of photography, art direction, effects, photograph, set direction, titles designed, edited, assistant director, make-up supervision, hair style supervision, sound recording, costumes by, special sequence, music by, conducted by and associate producer. Again, some of these credits are put together. However, both sequences end in who the film was directed by.

Having taken all this in i have learned that opening sequences begin with which company produced it and end with the name on the director which is shown being credited twice in an opening sequence. Trailers only last a couple of minutes and the people who are credited differs in every trailer. Music is used to create suspense which helps it's audience realise what genre it is. And also not everyone who helped in the making of the film is credited.