This YouTube video is just a trailer for the documentary, it does look amazing. It looks like the entire documentary is available on some free streaming sites, here's one: https://play.xumo.com/free-movies/it-s-quieter-in-the-twilig...

If that doesn't work, try using a VPN set to the US as country.

https://www.itsquieterfilm.com/trailer is the official site.

I think I watched it on Amazon Prime in the USA. I don't know if Oz has Prime or what rights they have.

I checked the usual sites on the high seas and it is available for instant download there too :)

Why do some uploaders make it unavailable in certain countries?

licensing probably

But for an advert?

You can rent videos from YouTube, wouldn't you just make the video available but charge for it?

Licensing rarely makes sense