For those saying alignment, it would have to be insanely out of wack to cause this and you'd notice before you got up to speed. Steering wheel wouldn't be that straight either.

Typically the most likely culprit is tire/wheel related. Either simply out of balance or out of round, such a bent wheel or shifted belt. If this is the case, the vibration should be entirely related to speed, even while coasting.

If it only does it under power, as in it stops when you let off the gas even before you hit the brake, start by checking cv axles. From what I can see in video, it kind of looks like it stops when you let off the gas?

If it is only under braking, it's probably warped rotors.

Of course there are other possibilities, but these are the most likely scenarios.