Re: [rtcweb] Query Regarding Mandatory audio codecs draft
Steev James <steev.a.james@gmail.com> Mon, 28 April 2014 09:25 UTC
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Date: Mon, 28 Apr 2014 14:55:55 +0530
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From: Steev James <steev.a.james@gmail.com>
To: Jean-Marc Valin <jmvalin@mozilla.com>
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Cc: "kiran.guduru@samsung.com" <kiran.guduru@samsung.com>, rtcweb@ietf.org, cary.bran@plantronics.com
Subject: Re: [rtcweb] Query Regarding Mandatory audio codecs draft
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Means you say that G.711 uses less bandwidth than Opus at the expense of complexity. Am I right ? On Mon, Apr 28, 2014 at 11:23 AM, Jean-Marc Valin <jmvalin@mozilla.com>wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > So, if the other endpoint only supports G.711 (legacy), then it > doesn't matter which codec you offer first. The the other endpoint > supports both Opus and G.711, but only at 8 kHz, then it comes down to > which of complexity or bandwidth is more important. On a corporate LAN > you'd likely want to use G.711 while for chatting from your home, > you'd usually want Opus. This is why the draft makes has no SHOULD > when it comes to narrowband. > > Jean-Marc > > On 28/04/14 12:40 AM, Steev James wrote: > > Paul, What do you say, if another end point is using both G.711 and > > Opus at 8kHz and why ? > > > > Steev. > > > > > > > >>> Is that means spec is recommending G.711 (PCMA/PCMU) for > >>> sampling > > rate > >>> less than or equal to 8 kHz? > >> > >> No. Opus is still a good idea for 8 kHz, but it's not 2119 > >> RECOMMENDED since there are valid (mostly complexity-related) > >> reasons to use G.711 despite the higher bit-rate. > >> > >> Jean-Marc > > > > Opus isn't a good idea for 8 KHz if you are trying to inter-operate > > with another end-point using G.711. > > > > ...Paul > > > > > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJTXezkAAoJEJ6/8sItn9q9DfEIAKy6ZPCE7o/dyBFhpt5tGpds > XRDUiR++S89H4blgJOsR5nzzmkGwN+onN4cwBfz4Tbvi0Q7Q/UyzdlBePekC4gwL > wrQL2/fwxfTnB0T6yfn2rrCd+i7jVWf2xJz0xJIY2qYAxYVg469PzeGMHTJK1+1x > S1BDRZHZp4X/nSShthdthHvkfHrVPq5pDzexCfBc2h56+9Z3K1COdQlVZD/UJwQy > twp8p6755LzucV4KdvN5NM5w9rjySBTAaUElU0WkyMPfRppowAkFhJunoJCTeIW9 > 8Stsm5yrAeasQhe9mlubceIYsTyjGfKkoO1RVkQUB2YwzctqyMnK14ZYJQbg8Us= > =Ys9g > -----END PGP SIGNATURE----- >
- [rtcweb] Query Regarding Mandatory audio codecs d… Kiran Kumar Guduru
- Re: [rtcweb] Query Regarding Mandatory audio code… Jean-Marc Valin
- Re: [rtcweb] Query Regarding Mandatory audio code… Kiran Kumar Guduru
- Re: [rtcweb] Query Regarding Mandatory audio code… Jean-Marc Valin
- Re: [rtcweb] Query Regarding Mandatory audio code… Paul Coverdale
- Re: [rtcweb] Query Regarding Mandatory audio code… Steev James
- Re: [rtcweb] Query Regarding Mandatory audio code… Harald Alvestrand
- Re: [rtcweb] Query Regarding Mandatory audio code… Stephen Botzko
- Re: [rtcweb] Query Regarding Mandatory audio code… Paul Coverdale
- Re: [rtcweb] Query Regarding Mandatory audio code… Jessie Morris
- Re: [rtcweb] Query Regarding Mandatory audio code… Stephen Botzko