Teaser trailer conventions - Harry Potter

I have watched the teaser trailer for Harry Potter and analysed the conventions from it. Below is what I found:



-Images of stars; Daniel Radcliff
-Images from film
-Film rating showing approval for all audiences
-Film production company logo; Warner Bros
-Sound effects
-Special effects
-Up tempo music reflecting genree
-Release date
-Taglines
-Film title
-Quick pace editing