Sound coming from Vacuum/Oil pump? Or bad belt tensioner?

[LinasO]

Hello, after replacing timing belt with pulleys and coolant pump. I noticed this sound. I checked all of the plastic covers, the belt condition and everything seems fine.
Can a new tensioner be bad or is it the oil/vacuum pump?

I attach the video here.

 

 

[LinasO]

https://streamable.com/vox1vi


I attach a link for the video