3rd gen engine noise

Is the diesel knocking noise coming from the engine normal? I’ve seen replies on here that some say it is and some say they don’t hear anything. Mine is only prominent when the truck is up to temperature. Here is a video of my sound I’m hearing

https://youtube.com/shorts/rrOuSSMTIXA?feature=share

 

I hear it. You check fluid levels?

Doesn't sound terrible, but not what I hear from mine at idle or at least not that loud.

 

Yep engine oil is full. It’s hot as can be outside but it did this in the spring too.

 

Mine sounds similar. Drives me nuts.

 

Mine also sounds pretty much exactly like that at low rpm in drive with the brake on. Idling a little higher in neutral or park lessens it but it’s always present. Just how it sounds I think. Been doing that for 80,000 miles.