Video embed issue

[Jimpink]

Hello,

So my Mac just updated itself and now I'm using a newer version of Safari as my browser. Since the update all embedded videos have disappeared, not sure why and even less sure what to do about it.

I've googled a few questions but end up going round in circles, the simple fix seems to elude me and both Safari and the Mac's general preferences aren't helping.

Anyone got any ideas? Is it something to do with this website host being not secure and therefore somehow the content is partially blocked?