HTML5 video is an element introduced in the HTML5 draft specification for the purpose of playing videos or movies, partially replacing the object element. The current HTML5 draft specification does not specify which video formats browsers should support in the video tag. User agents are free to support any video formats they feel are appropriate.
365 days ago, I found a nice article from an x264 developer. He successfully pointed out the Adobe mistakes about Flash and analyzed the future of internet video, including Google’s VP8 opening. That article led to another, The first in-depth technical analysis of VP8, and its response, An analysis of WebM and its patent risk – updated.