"Even without HTML 5 formally specifying a default
video codec, Mozilla's view is that the video tag is still useful.
treat video as a first-class citizen of the Web," Mozilla Standards
Evangelist Arun Ranganathan told InternetNews.com. "There is great
value in the Video tag and API, but we are keen to see a common
video codec emerge on the Web that is both free to use and of a
high quality for Web applications."
"The HTML 5 specification itself is still in the drafting phase,
which means the final version could potentially still be adjusted
to specifically include a default video codec."