http://blog.chromium.org/2011/01/html-video-codec-support-in-chrome.html
Chromium will support only Theora and VP8, Chrome to follow. Same as Firefox 4.
(How close are we to allowing VP8 on WMF? I understand Greg Maxwell, as one of those actually working on making the VP8 code drop usable, had some qualms about the code at the time.)
- d.