|adjusted? Not properly tensioned or out of alignment they could whine. Get a auto stethoscope and probe the running engine to search for location of what is whining and other noises. I do not hear a knock on the video. If I was there might be different?
Might waht to pull the top TB plastic cover(s) and inspect the TB.
You didn't note AC belt was it changed?
With drive belts too tight is bad, need proper tension to keep bearings alive on the PS, AC and Alt.