It might be iridium flares, although it looks like he got slow moving sats, so higher in altitude. Either way, they all look like that, fast straight moving lights, not pulsating like stars, not red/green like planes.
You can see the ISS very clearly when it passes above. It sometimes disappears mid-pass when it is late and the shadow of the earth is obscuring half your sky. You can also see the SpaceX sat train (60 sats in a straight line) passing by just after a launch. This will freak you out though, it looks like a straight comet trail moving half the sky in 1 min.
It might be iridium flares, although it looks like he got slow moving sats, so higher in altitude. Either way, they all look like that, fast straight moving lights, not pulsating like stars, not red/green like planes.
You can see the ISS very clearly when it passes above. It sometimes disappears mid-pass when it is late and the shadow of the earth is obscuring half your sky. You can also see the SpaceX sat train (60 sats in a straight line) passing by just after a launch. This will freak you out though, it looks like a straight comet trail moving half the sky in 1 min.