This is a fairlyconventional teaser trailer, it is a simple picture with just a voice over. More is revealed from the picture of the batman logo, as it breaks up, and the movie hints at the joker, with the card at 0:44. This sort of teasrer does exactly what the name says, it shows exactly what the movie is, but barely anything about what it is about.
The logo becomes more visable as it progresses, and so does the bursts of light behind it, until eventually the logo breaks up. This could sugest some sort of downfall, and this creates a lot of speculation which in turn, generates hype.
Can you try embedding this again…it seems to have gone wrong.