(I can't find a youtube html5 converter for firefox) Firefox doesn't support H.264. If you're using Firefox 4 you can opt in to the HTML5 beta and get a fair n

(I can't find a youtube html5 converter for firefox) Firefox doesn't support H.264. If you're using Firefox 4 you can opt in to the HTML5 beta and get a fair number of videos served as WebM, though.