Comparing different types of trailers - conclusion

My initial analysis of the trailers for 'Incrediblkes 2' and 'Skyfall' have shown the following similarities across the different types of trailers.

Similarities between all of them are:
- Having production company logos
- Images from the film
- All contain music
- The title of the film
- A form of release date

The most noticeable differences between the types of trailers relate to the times that the trailer are released in relation to the release of the film, the length of the trailers, the pace of the editing and the amount of narrative information that is delivered/withheld. In addition there are a number of subtle differences where some types of trailers include the following:

- Certificate
- Voice over
- More dialogue in certain types of trailers
- Taglines
- The release date changes from being vague (e.g. 'summer') to being specific (e.g. 'June 15')
- Reviews and ratings
- References to merchandise
- Credits
- Website and social media links

I am now going to look in more detail at each different type of trailer before deciding which types of trailer I will produce as part of my marketing campaign.