Comparison between a title sequence and a trailer

The difference between a title sequence and trailer is that is that a title sequence most commonly is a sequence of shots in an order which give hints to what is going to happen in the film, where as adverts try to gain the audiences interest by showing the best parts of the film and creating a shorter story line for the audience to see what the film is about. The title sequence makes the audience think about what is going to happen and why it is being shown in that way where as an advert gives a series of clips in chronological order showing different parts of the film. within the batman opening titles it is a tracking establishing shot which goes around something which seems to be a sewage tunnel, creating questions for the audience such as - why is this so important? The whole sequence later reveals that it was actually going around the batman symbol which is the symbol of a bat. Within the Dredd trailer however there is a narration which explains the plot line and it is a sequence of shots which is non-linear and shows the best parts of the films which makes the viewer want to see the whole of the film. This also broadcasts the high quality of the film which shows that it is a blockbuster movie which has had millions invested into it.