Regarding the video codec, it&#x27;s the same thing, except one in IETF is the actual engineering group, and that AOM is more of an administrative one that synchronizes all the bureaucratic stuff probably (legal as well I guess).<p>UPDATE: See here: <a href="http:&#x2F;&#x2F;xiphmont.livejournal.com&#x2F;67752.html" rel="nofollow">http:&#x2F;&#x2F;xiphmont.livejournal.com&#x2F;67752.html</a>