From now on, any video you upload to YouTube will be transcoded into Google's WebM codec, joining the "videos that make up 99% of views on the site or nearly 30% of all videos." Google explains it to the non-tech savvy folk like so:
Oh wow. Google's dropping support for h.264 video in Chrome, because, they say, they're only going to support "open codec technologies":
HTML5 video has a few hurdles to leap before it can fully replace Flash, but one looms larger than all others: Opposition to proprietary video formats, like h.264. Conveniently, Google has just open-sourced their own format, called WebM.