The 2nd video is alarming.
I first thought it must have been time lapsed for the lava to be flowing so fast.
Then I saw the 2 guys walking back to their truck and realized it was actual speed.
Those guy are nuts being that close, as the flow could shift or overflow current banks in an instant.
Yes the speed of the lava flow in that second video is jaw dropping. The reporter-ette even made a point of saying the video was unaltered. Unbelievable!