I know nothing about this topic at all but, having browsed Wikipedia for a bit, the machine from the video looks very much like a tamping machine https://en.m.w

I know nothing about this topic at all but, having browsed Wikipedia for a bit, the machine from the video looks very much like a tamping machine https://en.m.wikipedia.org/wiki/Tamping_machine https://en.m.wikipedia.org/wiki/Tamping_machine (The video title also says "tamper")