Strange sound from the engine

Hello guys!
I hope I'm in the right place for this question.

I've been noticing a strange sound sometimes when I start my car. I have a video of it: https://vimeo.com/130023143

Anyone recognize this?

Friendly regards,

Wow! Sounds like timing chain rattle might wanna have that tensioner and chain looked at that sounds rough. If the tensioner goes or chain jumps motor will be wasted