so...it's a half hour video...
what is the topic of the video? safety of ammo in fires? or what?
It's about what Firefighters can expect in ammo fires and other scenarios. They drop, shoot, smash bulk ammo to demonstrate how much fires off -- and how impotent it is, not having a chamber/barrel to make power.
They then set it on fire in a variety of ways and demonstrate that while rounds fire off (like firecrackers) they are more loud than dangerous. They show how little penetration ability the rounds have and at one point one of the firefighters being trained stands in the path of them. You can see rounds pelting him but none have enough oomph to even damage his jacket.
It also shows how quickly the fires can be put out -- and that there's no chain reaction from fired rounds to non-fired rounds.
But I hear you. I expected some "tl;dr" responses.