Well the HTML5 wars maybe over. H.264 is OK, but it has royalty issues. Not WebM. WebM uses VP8 (which Google Acquired), Vorbis Audio, and a special container. This means you can view HTML5 videos with no issue 10 years down the road of who can use it, and if it will cost money.
WebM is a project by over 50 companies. Mozilla, Google, AMD, Nvidia, Skype, ARM, and many others are launching partners. Flash will even support VP8!
Google Chrome, Mozilla Firefox 4, and Opera nightly builds support the codec. YouTube will also support WebM. In fact if you use a nightly build brower, and add &webm=1 to the url (you will need to be in the HTML5 beta) you will see YouTube videos in WebM.
Hopefully Microsoft, and Apple are behind this so that it can take off with HTML5.
