Since last week's announcement of the YouTube and Vimeo beta versions which use HTML5's element, the Mozilla developers have been defending the fact that Firefox 3.6 cannot play the content on these betas even though it supports HTML5. The reason for the problem is that the HTML5 working groups decided not to specify which video codecs the tag would support.

Current developer builds of Firefox 3.6, expected to arrive later this year, now include a fullscreen option for movies embedded using the HTML5 video tag.

This whole html tag ordeal is getting out of hand. If we look at the image tag it supports jpeg, png, gif and probably more although I've not tried any others. I wonder how drastic that decision must have been when made ? But seriously as it is now if I don't have the correct plugin both opera & firefox help out if possible.

HTML5 spec is expected to introduce new audio and video capabilities into the HTML language. However, it seems that Nokia and Apple have succeeded in removing Ogg Vorbis and Theora support from the current draft which decision has caused lots of heated political discussion. Some critics claim that the decision is mostly based on reluctance to back a standard that has no provision for including DRM, while others have mentioned potential patent uncertainties as the main reason not to back Ogg Vorbis and Theora.

Nokia has joined Apple in calling for a change in the video code requirements for HTML 5. Specifically they want the W3C Working Group to drop the requirement that browsers and devices support the Ogg video and audio codecs.