The 17-minute video was obtained by the National Institute of Standards and Technology, to help with their ongoing investigation.  But now the entire thing is on YouTube because someone leaked it.

WARNING:  This video includes the S-word

They start to fly over the towers at :30, you can see crowds of people walking around on the ground at 2:18, and  they zoom in on the side of the south tower at 3:50.

At 4:04 they show footage of the dust from the first tower.  And at 12:29, they show footage of the second tower falling, but it's from a distance.  Fortunately, there's no footage in the video of people falling or jumping from the towers.