Surveillance video shows moment before train derailment

CNN's Sara Sidner reports on the surveillance video that caught images from the Amtrak train derailment in Philadelphia.

[xBloodXGusherx]

I love how all these cameras catch nothing and in the worst of quality. This should not have even been shown.

[jvf]

She's right.  It went right across my squeen. 0:21/2:52

[Hamadoman]

We can not see anything except lightings. You can see what you can not see. Welcome to CNN News. Hahaha.

[Zincink]

-__- CNN it is not a smart idea to hype up a video when the video doesn't show much of anything.

[bahnspl]

I know it is hard to tell exact speed from looking at a video... But that mutherfucker was flying!.. watch that last car disappear out of frame .. probably doing somewhere between 80 and 120.... If you have seen their cars in person. they are very long

[Anglynn]

is that train going too fast when it was approaching that turn? I mean those trains go fast anyway, I've traveled amtrack passenger trains before, but that looked awfully fast for that turn

[TheHypnotstCollector]

oh, that was really useful.  Great job.  This hypnosis girl tells us everything we see. Do you see anything? No.