HTML5 video problem

Question

i wonder what i\'m doing wrong?

Answer 1

Firefox 3.6 doesn't support WebM video format. To view HTML5 WebM videos you need to download a nightly build of Firefox 4

For Ogv take care of frame rates and don't expect to show HD video. With a higher rate Firefox couldn't show my video, but when I reduce the frame rate and the quality, it works fine.