This warrants a new post as far as I'm concerned, mostly because the original post is getting buried in updates and will soon drop below the fold. Microsoft has just announced it will support VP8 in HTML5 video in Internet Explorer 9, but only if the user has the DirectShow filter installed. Update: Yes, the updates keep on coming. Zencoder has added support for VP8. Update II: Zencoder's side project, video.js, offers a player that can fallback between h.264, OGG and VP8 on most browsers. Support for Android browsers is underway too. Update III: The H264 supporters' hardware argument for mobile is sounding moot too, since ARM explains on its blog that mobile devices with Cortex-A8 and Snapdragon processors "will be able to take advantage of WebM" through those chips' NEON SIMD engine.