[codec] Liaisons sent to ITU, 3gpp and ISO/IEC
Jonathan Rosenberg <jdrosen@jdrosen.net> Wed, 27 July 2011 19:38 UTC
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Date: Wed, 27 Jul 2011 15:38:12 -0400
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Subject: [codec] Liaisons sent to ITU, 3gpp and ISO/IEC
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This is to let folks know that we've just sent liaison statements to ITU, 3gpp and ISO/IEC informing them of our status and inviting comments on the Opus codec. The liaison text is the same (except for name of the SDO). Here is what was sent: ---- The IETF codec work continues to make progress, and we wanted to give the ITU an update on our activities. The working group has three document deliverables – a requirements document, a guidelines document, and the actual codec specification. The codec working group has completed its specification of the requirements (http://tools.ietf.org/html/draft-ietf-codec-requirements-04), and this document has been passed to the IESG for consideration as an informational document. The codec working group initiated a working group last call (WGLC) on the guidelines document (http://tools.ietf.org/html/draft-ietf-codec-guidelines-02) on July 6, 2011. The WGLC period has ended, and the codec group will now proceed to incorporate any final comments and discussion arising from our face-to-face meeting at the Quebec City IETF the week of July 25, 2011. Work on the codec specification itself has progressed nicely. By working collaboratively, the group has combined aspects of CELT and SILK to produce Opus (http://tools.ietf.org/html/draft-ietf-codec-opus-07). Testing has taken place on this combined codec, including numerous listening tests, which you can find documented here (http://tools.ietf.org/html/draft-valin-codec-results-00 ) The bitstream has been unchanged for several months, and the design team believed the codec was complete by June 2011. Consequently, the codec group issued a WGLC for the codec on July 8, 2011. The document will also be discussed at the IETF meeting the week of July 25, 2011. The CODEC working group would like to invite experts from ITU-SG16 to provide any comments they might have on the document. The chairs will hold the document from being passed to the IESG for a period of 4 weeks, commencing today, awaiting any input from SG16 (and from anyone else, of course). It is also important to note that several IPR claims have been made against Opus, including one from Qualcomm (https://datatracker.ietf.org/ipr/search/?option=document_search&document_search=codec-opus) . All but the Qualcomm license declarations grant royalty free access. The IETF, as a matter of policy, makes no judgment on the validity of patent claims made against its documents. Instead, it relies on individual contributors to make their own assessments, and then act on them accordingly. -- Jonathan D. Rosenberg, Ph.D. SkypeID: jdrosen Skype Chief Technology Strategist jdrosen@skype.net http://www.skype.com jdrosen@jdrosen.net http://www.jdrosen.net
- Re: [codec] Liaisons sent to ITU, 3gpp and ISO/IEC Paul Coverdale
- [codec] Liaisons sent to ITU, 3gpp and ISO/IEC Jonathan Rosenberg