À lire aussi: http://xiphmont.livejournal.com/50239.html (et les commentaires, notamment ceux de xiphmont lui-même).

En particulier:

"Do you believe that VP8 is more or less a rip off h264"

No. That's pretty serious hyperbole. Some design chunks look very similar even to the trained eye, but details matter in both code and patents. DS ignored the details.

"that there must be patents"
If any litigation materializes, I doubt it will be motivated by actual infringement. Here's where it's nice to have Google around.

mais il y a aussi d'autres points intéressants.