Actually we do, because Google used the very clever strategy of essentially copying the H.264 algorithm and then methodically working around all the patents. This means that if there are outstanding patents on WebM they are probably on H.264 as well. But the great likelihood is that there are not outstanding patents because any such patent holders would have long ago put their hands up to join the H.264 patent pool and reap the benefits.
H264 isn't "an algorithm" its a pretty massive collection of different algorithms. I actually find it a bit difficult its not infringing in some way and this analysis seems to confirm this.
I don't think your link contradicts what I said - in fact, in a way it gels very well with it: the conclusion is that VP8 is essentially H.264 with all sorts of bits missing and tweaks that in most cases make it worse than H.264. That's exactly what you would expect if someone took a patented algorithm and went through it point by point to work around the patented parts.
There's a more thorough discussion of this here:
An analysis of WebM and its patent risk
Classic FUD.
Nada @ http://investing.businessweek.com/research/stocks/private/bo...
Do you really think Mircrosoft is like "oh, well. MPEG-LA, we hand over the rights for our patens to you. Do as you wish with those patents and also please give the license fees to the other companies. But please don't give us money!"? ;)
You do know that the MPEG-LAs purpose is to collect the rights to those patents from those companies (the licensors) and collects money from the licensees, redistributing it to the licensors. Now Apple and MS are on the list of licensors. And they don't get money, you say? And never will? sure... :)
H.264 is not Apple's codec, nor is it Microsoft's. Both of them have to license it, just like any random company off the street would. Apple does own one or two of the several hundred patents involved, so might get a very slight discount on their license.
> I am fully behind the decision of Mozilla, Opera, Google and others to support open and patent unencumbered video formats.
WebM is probably patent encumbered. We just don't know who owns the patents yet.