Does Qt4.7.2 demos/browser support HTML5?

[lycheng]

Hi, I run Qt4.7.2 demos/browser on my fedora 14. when run http://www.quirksmode.org/html5/tests/video.html, no video can start. But when i run firefox 3.6.18 on same computer, the ogg file can be played. Does it mean Qt4.7.2 not support html5?