Where is Google in all this? They must surely be aware of all such IETF projects. I can understand why Apple wasn't mentioned (Apple Island is a world unto itself to the maximum extent possible), but Google has usually pursued the opposite strategy. This seems like the sort of thing they would get behind unless there is some issue I'm unaware of, and it seems as though Mozilla would mention Google in this infomercial…
"Opus is a hybrid codec that internally uses both, SILK and Celt.
SILK was created by Skype (now Microsoft) and its patent license includes this gem: '5.1 Skype may terminate this License Agreement and any rights granted hereunder in the event that you or any of your Affiliates (i) materially breaches any of the terms and conditions of this Agreement; or (ii) asserts any patent or patent rights against Skype, its Affiliates, or its or their successors or assigns.'
So lets assume Motorola (owned by Google) tries to (counter)sue MS over some Android stuff: Suddenly the patent grant given by Skype becomes invalid and Google might have to remove Opus from Chrome. If it's popular by that time, this is a serious competitive disadvantage.
So better not help making it popular in the first place. "