webclips vs. movie

[sophiamcl]

Here is a question for someone who has both seen the movie and is 
familiar with the PoA movie-clips available on fandango.com and 
movies.yahoo.com 

Is the hippogriff-clip and the marauder's map-clip edited at all, or 
do the scenes occur just like that in the movie? They both give me a 
distinct sense that there are a couple of lines missing in the middle 
of them. For instance, it seems to me Snape will say something more 
between the ominous "Potter" and asking about the map. Also, I get 
the impression something happens between Harry being volunteered to 
approach the hippogriff and his actually petting its beak that is not 
shown in the clip, but will (hopefully) be in the movie. (Does Harry 
get to bow to Buckbeak? I would love that.)Anyone?

Sophia