> no one has yet, it appears, made the <video> element work for this use case.
4chan has, and it's significant not only because they have a lot of traffic, but also because their implementation has to be pretty solid -- 4chan users would love nothing more than to troll the administrators by breaking this.
That and 4chan is a big content generator for the internet. Everything further down the line (reddit, imgur, 9gag, tumblr) should support it. Especially tumblr, who can consume over a gig of ram if you scroll down long enough.
>4chan users would love nothing more than to troll the administrators by breaking this
Not really worth it. You'd post something once, then you'd get banned for a week. Unless you have a fleet of proxies or can keep changing ip address somehow, and can keep posting while they try to fix whatever exploit it is you found. Kind of hard to target admins when they're all anonymous, too.
I have a cable internet connection and know the difference between a modem and a router. You'll have to take my word for it that every time I change my router's MAC address, my public IP does as well.
4chan has, and it's significant not only because they have a lot of traffic, but also because their implementation has to be pretty solid -- 4chan users would love nothing more than to troll the administrators by breaking this.
http://blog.4chan.org/post/81896300203/webm-support-on-4chan