There has been a lot of talk on the optimalisation of video rendering and the use of Stage Video API:
So I decided to do a little benchmark test.
Flash Player 10.2 without Stage Video API: fullscreen browser (1680x1050)
Flash Player 10.2 with Stage Video API: fullscreen browser (1680x1050)
HTML5 Video (Vimeo) small resolution (640x360)
HTML5 Video (Vimeo) fullscreen (1680x1050)
I think the Stage Video API is big step forward and we haven't seen the last of it.
Here are the pictures:
Flash Player without Stage Video: CPU 111.2%
HTML5 Video (640x360) CPU 63.7%