Not only Safari is unable to show basic elements (less than Gnome Web which is Webkit based too), there's no single proper tool to export the fricking SVG to GIF.
I've never wanted to flip a table that much in my life.
The real reason was a boring one and seemingly unrelated to that file. I just ran out of disk space. Still though, that’s not exactly a helpful error is it
It turns out you can get video over DNS TXT records.
I saw “we made a globally distributed DNS network for shits and giggles” at 38c3.
It can also be found on one of the presenter's webpage.