Analysation on Trailers

As I've started the comparison between Teaser trailers and longer trailers, looking at what image they give to the audience and also how it's been viewed upon by the audience. I've found that Youtube isn't a reliable source for finding good trailers to analyse as people upload their own versions of trailers and also don't know the difference between a teaser trailer and normal trailer. I approached my Teacher about this and he gave me an excellent website to find good trailers.  www.apple.com and then click on movies on their home page. At the moment I'm in the process of analysing 'Kung Fu Panda' 1 & 2.