that's what it sounds like to me...
only way to try and test it is to pull one spark plug wire off at a time. If the noise stops, then that is the cylinder the knock is coming from. If the noise stays, then it more than likely is not rod knock.
The down side to this is that you have to run the engine to test it. If it is rod knock, then it isn't that big of a deal considering the damage is done anyway. If it isn't, then whatever is banging around (like valves) is just getting torn up even more.
but, from that vid, it does sound like rod knock to me.