Re: [rtcweb] Agenda time request for draft-marjou-rtcweb-audio-codecs-for-interop-01
Tim Panton <tim@phonefromhere.com> Wed, 13 March 2013 20:11 UTC
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From: Tim Panton <tim@phonefromhere.com>
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Date: Wed, 13 Mar 2013 20:11:35 +0000
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To: Jean-Marc Valin <jmvalin@mozilla.com>
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Cc: rtcweb@ietf.org, Xavier Marjou <xavier.marjou@orange.com>
Subject: Re: [rtcweb] Agenda time request for draft-marjou-rtcweb-audio-codecs-for-interop-01
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On 13 Mar 2013, at 19:45, Jean-Marc Valin wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 03/13/2013 09:14 AM, Xavier Marjou wrote: >> - In order to reach a compromise, we would like to add some text in >> the WG draft draft-ietf-rtcweb-audio providing incentives for the >> browser to use these three codecs: make them mandatory to implement >> when there is no cost impact on the browser (e.g. if codec already >> installed, paid by the device vendor...). > > I think this is the main faulty assumption here. "Royalties already > paid" does not imply "free". There's a real cost here because > supporting AMR, AMR-WB, G.722 and any other codecs added to that list > means that: > 1) Someone has to write all the code for actually using these codecs > in their RTP stack. > 2) There is no standard interface for accessing these codecs, so a > browser vendor would have to write code for each of these (often > undocumented) interface and *test* it on every device. > 3) This code needs to be maintained and fixed for security > vulnerabilities. > 4) If there's any issue (e.g. buffer overflow) in the platform > implementation of the codec, there's nothing the browser vendor can do > about it. > > Oh, and that cost would be paid by pretty much all browser vendors > because they're all running on at least one platform that supports > each of these codecs. And that assumes that the codec license signed by the hardware maker permits the use of these 'no-cost' in all the possible ways the javascript user wants. E.g. is it limited in number of channels ? Is the license symmetrical wrt encoding and decoding ? Is it available to 3rd party browser makers (eg chrome on blackberry? Or to products derived from the native browser browsers or that embed browser objects (like cordova/phonegap) ? T.
- [rtcweb] Agenda time request for draft-marjou-rtc… Espen Berger (espeberg)
- Re: [rtcweb] Agenda time request for draft-marjou… Stefan Håkansson LK
- Re: [rtcweb] Agenda time request for draft-marjou… Markus.Isomaki
- Re: [rtcweb] Agenda time request for draft-marjou… Paul Coverdale
- Re: [rtcweb] Agenda time request for draft-marjou… Ted Hardie
- Re: [rtcweb] Agenda time request for draft-marjou… Harald Alvestrand
- Re: [rtcweb] Agenda time request for draft-marjou… Xavier Marjou
- Re: [rtcweb] Agenda time request for draft-marjou… Alex Agranovsky
- Re: [rtcweb] Agenda time request for draft-marjou… Bogineni, Kalyani
- Re: [rtcweb] Agenda time request for draft-marjou… Ron
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Bogineni, Kalyani
- Re: [rtcweb] Agenda time request for draft-marjou… Olle E. Johansson
- Re: [rtcweb] Agenda time request for draft-marjou… Olle E. Johansson
- Re: [rtcweb] Agenda time request for draft-marjou… Xavier Marjou
- Re: [rtcweb] Agenda time request for draft-marjou… Bogineni, Kalyani
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Xavier Marjou
- Re: [rtcweb] Agenda time request for draft-marjou… Olle E. Johansson
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Olle E. Johansson
- Re: [rtcweb] Agenda time request for draft-marjou… 'Ron'
- Re: [rtcweb] Agenda time request for draft-marjou… Tim Panton
- Re: [rtcweb] Agenda time request for draft-marjou… Ron
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Roman Shpount
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… DRAGE, Keith (Keith)
- Re: [rtcweb] Agenda time request for draft-marjou… Bogineni, Kalyani
- Re: [rtcweb] Agenda time request for draft-marjou… Adam Roach
- Re: [rtcweb] Agenda time request for draft-marjou… Roman Shpount
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Cameron Byrne
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Hutton, Andrew
- Re: [rtcweb] Agenda time request for draft-marjou… Jean-Marc Valin
- Re: [rtcweb] Agenda time request for draft-marjou… Jean-Marc Valin
- Re: [rtcweb] Agenda time request for draft-marjou… Tim Panton
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Jean-Marc Valin
- Re: [rtcweb] Agenda time request for draft-marjou… Jean-Marc Valin
- Re: [rtcweb] Agenda time request for draft-marjou… Tim Panton
- Re: [rtcweb] Agenda time request for draft-marjou… Roman Shpount
- Re: [rtcweb] Agenda time request for draft-marjou… Michael Procter
- Re: [rtcweb] Agenda time request for draft-marjou… Markus.Isomaki
- Re: [rtcweb] Agenda time request for draft-marjou… DRAGE, Keith (Keith)
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Hadriel Kaplan
- Re: [rtcweb] Agenda time request for draft-marjou… Jean-Marc Valin
- Re: [rtcweb] Agenda time request for draft-marjou… Olle E. Johansson
- Re: [rtcweb] Agenda time request for draft-marjou… Stefan Håkansson LK
- Re: [rtcweb] Agenda time request for draft-marjou… Olle E. Johansson
- Re: [rtcweb] Agenda time request for draft-marjou… Stefan Håkansson LK
- Re: [rtcweb] Agenda time request for draft-marjou… Tim Panton
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Espen Berger (espeberg)
- Re: [rtcweb] Agenda time request for draft-marjou… Koen Vos
- Re: [rtcweb] Agenda time request for draft-marjou… Roman Shpount
- Re: [rtcweb] Agenda time request for draft-marjou… Koen Vos
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Roman Shpount
- Re: [rtcweb] Agenda time request for draft-marjou… Hadriel Kaplan
- Re: [rtcweb] Agenda time request for draft-marjou… R.Jesske
- Re: [rtcweb] Agenda time request for draft-marjou… Adam Roach
- Re: [rtcweb] Agenda time request for draft-marjou… Xavier Marjou
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Ralph Giles
- Re: [rtcweb] Agenda time request for draft-marjou… stephane.proust
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Bogineni, Kalyani
- Re: [rtcweb] Agenda time request for draft-marjou… Adam Roach
- Re: [rtcweb] Agenda time request for draft-marjou… Roman Shpount
- Re: [rtcweb] Agenda time request for draft-marjou… Bernhard.Feiten
- Re: [rtcweb] Agenda time request for draft-marjou… Andrew Allen
- Re: [rtcweb] Agenda time request for draft-marjou… Koen Vos
- Re: [rtcweb] Agenda time request for draft-marjou… Jean-Marc Valin
- Re: [rtcweb] Agenda time request for draft-marjou… DRAGE, Keith (Keith)