Yesterday microsoft announced in this post that:

• IE9 will support H.264.
• Microsoft released an add-on for Firefox on Windows to support H.264
• Microsoft will release a plugin for  Google Chrome on Windows to provide support for H.264.
• Support will be provided for IE9 users who want to play WebM

What does this mean?

Why Google doesn`t want to use H.264 in Chrome – Microsoft will make a workaround.
With this workaround and WebM support I forsee a good future for H.264  and WebM.

Personally- at this moment  – I haven`t made a choice of codec yet. Maybe after reading the HTML5 Video ook, which I will be reviewing next week!