[shorod]

Start with the suggestions above. It definitely sounds like at least one cylinder is not firing. Since it doesn't seem to come out of the issue at higher rpms the problem is not likely just a loose spark plug wire, so starting with swapping the cylinder #1 plug with, say, cylinder #5 and the cylinder #1 spark plug wire with cylinder #4 should tell you quite a bit in a hurry.

For your reference, as you're standing in the video, cylinder #1 will be on the left (passenger side) nearest the serpentine drive belt. The cylinders are numbered toward the firewall, 1, 2, and 3. On the right (driver's side) the cylinder nearest the serpentine drive belt will be number 4, followed by 5 and 6 as you move toward the firewall.

-Rod