Drekavac - Video explanation

Hello everybody!

I come from Greece and I have been to lovely Serbia a couple of times before.

I am currently trying to write a mystery novel that will take place in Serbia based on the tradition of the creatures you call drekavac (we have similar beliefs in Greece too)  and I am trying to find information about them in the internet.

I found a few videos in Youtube that look like clips from documentaries (3-7 min) that talk about drekavac but I cannot understand what they say.

Is it possible for anyone in here to translate a few for me or at least transcribe in serbian what they say (and then I will google translate)?

The videos are

Thank you in advance