adios flash, watch youtube videos in html5

[Dennis Kaptain]

----- Mensaje original -----
> De: Itamar Reis Peixoto <itamar at ispbrasil.com.br>
> Para: Community support for Fedora users <users at lists.fedoraproject.org>
> CC: 
> Enviado: Martes, 31 de enero, 2012 17:56:49
> Asunto: adios flash, watch youtube videos in html5
> 
> adios flash, watch youtube videos in html5
> 
> http://www.youtube.com/html5
> 
> -- 
> ------------
> 
> Itamar Reis Peixoto
> msn, google talk: itamar at ispbrasil.com.br

I am running Fedora 16 x86_64 with Firefox 9.0.1
The site this link takes me to says my browser does not support h.264. WebM is supported.
What do I need to install To fix that?

Thanks
Dennis K