Since about Wednesday, its been extremely hit or miss whether a video will download from the site for me. I'm running the latest version of Windows 10, and I've tried across Chrome (my primary browser), Firefox and Edge, all running their latest versions, and I get the same thing, a video will download a few MB and then just stop. I've also tried in incognito modes, and been getting the same thing. When they're not downloading, more often than not, they'll also not play for more than a few seconds in the web browser.
This is what I get in Chrome when I've attempted to download a video.
And here's the error in incognito mode
As of Today (Monday 26th Feb 2018) This is also now happening with Podcasts