It doesn't need to be the standard. Chrome now supports WebM, H.264, and Theora. Mozilla's position is that we will support multiple high-quality, open, and r

It doesn't need to be the standard. Chrome now supports WebM, H.264, and Theora. Mozilla's position is that we will support multiple high-quality, open, and royalty-free standards if they are available: "We believe that it is in the public interest for HTML5 video to be backed by multiple, open and royalty-free codecs available in a way that is consistent with the W3C license standards. We would absolutely consider H.264 if MPEG LA would make it available under open web terms as defined by the W3C standards. We stand by our position on Theora." (Mozilla press statement)