Crank bearings causing this noise?

[Johnnyboiranger22]

https://youtu.be/eL3pORW5Xhc

Been chasing oil fluctuation problems for awhile have already tested psi which was reading low at cold start, what do you guys think from video is going on?
I have already replaced the oil pump so i know its not the oil pump, i'm thinking bearing's worn not producing oil pressure, I plan on yanking engine this weekend, what do you guys think? I know it's a very nasty sound.

 

[ricardoguitars]

Mine makes a similar noise when cold, I believe it is the valves, since my engine is a bit low on compression I'm using thicker oil, so after a few seconds of cold running the noise goes away, so I believe the thicker oil takes longer to climb up the top.

Get a mechanic stethoscope, or use the good 'ol screw driver trick and look for the source of the noise.