True. But the player code is all there. It should work in any html5 enabled browser (Safari 4, Chrome, and FF 3.5) although FF 3.5 is having some issues with it.

This does highlight one problem with html5 based video, different browsers will interpret it differently no matter how hard standards are pushed. Flash video (FLV) saved us from that and all the horrible players like Real Media, Windows Media and Quicktime by being consistent and working across all browser as long as you have the plugin.