Idle issues on start up

[ukrcan]

I've had this issue almost since i bought this car last year but i think it is getting worse... it used to be (or i think it used to be) only when the car was cold, but now even if the car sits on the sun for a few hours when i start it - same issue occurs every time...if i start the car and wait for 1:10-1:20 minutes it feels like rpms are dropping below 500 rpms and car chokes like it wants to stall but never does, RPMS go back up and the car idles fine after that...
Here is the video of how the engine sounds (start from about 1min into the video). While recording the video with an open hood i also noticed there is also a clanking noise that happens at the same time... Never heard it from the inside. No engine light, no error codes...

Any ideas?

IMG 2022 - YouTube