Same here with Chrome, both here and on the Beer Barrel -- intermittently for the last 2-3 weeks or so. Clearing cookies and cache generally seems to resolve the issue, but only temporarily.
I am inclined to think it is not a XenForo specific problem, as I've also experienced some similar issues viewing images and vids while using Chrome as a browser on the Phora and also on a few other vBulletin forums.
Apocales -- don't know if you still occasionally use Chrome these days, but if so, have you noticed this?
Google is always trying to find ways to prevent scraping/hotlinking of its content. I haven't seen this problem yet personally, but I'll keep an eye out/read up on it.
I've experienced the exact same issue in Chrome.