draft-ietf-rtcweb-audio-04.txt | draft-ietf-rtcweb-audio-05.txt | |||
---|---|---|---|---|
Network Working Group JM. Valin | Network Working Group JM. Valin | |||
Internet-Draft Mozilla | Internet-Draft Mozilla | |||
Intended status: Standards Track C. Bran | Intended status: Standards Track C. Bran | |||
Expires: July 31, 2014 Plantronics | Expires: August 17, 2014 Plantronics | |||
January 27, 2014 | February 13, 2014 | |||
WebRTC Audio Codec and Processing Requirements | WebRTC Audio Codec and Processing Requirements | |||
draft-ietf-rtcweb-audio-04 | draft-ietf-rtcweb-audio-05 | |||
Abstract | Abstract | |||
This document outlines the audio codec and processing requirements | This document outlines the audio codec and processing requirements | |||
for WebRTC client application and endpoint devices. | for WebRTC client application and endpoint devices. | |||
Status of This Memo | Status of This Memo | |||
This Internet-Draft is submitted in full conformance with the | This Internet-Draft is submitted in full conformance with the | |||
provisions of BCP 78 and BCP 79. | provisions of BCP 78 and BCP 79. | |||
skipping to change at page 1, line 32 | skipping to change at page 1, line 32 | |||
Internet-Drafts are working documents of the Internet Engineering | Internet-Drafts are working documents of the Internet Engineering | |||
Task Force (IETF). Note that other groups may also distribute | Task Force (IETF). Note that other groups may also distribute | |||
working documents as Internet-Drafts. The list of current Internet- | working documents as Internet-Drafts. The list of current Internet- | |||
Drafts is at http://datatracker.ietf.org/drafts/current/. | Drafts is at http://datatracker.ietf.org/drafts/current/. | |||
Internet-Drafts are draft documents valid for a maximum of six months | Internet-Drafts are draft documents valid for a maximum of six months | |||
and may be updated, replaced, or obsoleted by other documents at any | and may be updated, replaced, or obsoleted by other documents at any | |||
time. It is inappropriate to use Internet-Drafts as reference | time. It is inappropriate to use Internet-Drafts as reference | |||
material or to cite them other than as "work in progress." | material or to cite them other than as "work in progress." | |||
This Internet-Draft will expire on July 31, 2014. | This Internet-Draft will expire on August 17, 2014. | |||
Copyright Notice | Copyright Notice | |||
Copyright (c) 2014 IETF Trust and the persons identified as the | Copyright (c) 2014 IETF Trust and the persons identified as the | |||
document authors. All rights reserved. | document authors. All rights reserved. | |||
This document is subject to BCP 78 and the IETF Trust's Legal | This document is subject to BCP 78 and the IETF Trust's Legal | |||
Provisions Relating to IETF Documents | Provisions Relating to IETF Documents | |||
(http://trustee.ietf.org/license-info) in effect on the date of | (http://trustee.ietf.org/license-info) in effect on the date of | |||
publication of this document. Please review these documents | publication of this document. Please review these documents | |||
skipping to change at page 2, line 39 | skipping to change at page 2, line 39 | |||
3. Codec Requirements | 3. Codec Requirements | |||
To ensure a baseline level of interoperability between WebRTC | To ensure a baseline level of interoperability between WebRTC | |||
clients, a minimum set of required codecs are specified below. If | clients, a minimum set of required codecs are specified below. If | |||
other suitable audio codecs are available for the browser to use, it | other suitable audio codecs are available for the browser to use, it | |||
is RECOMMENDED that they are also be included in the offer in order | is RECOMMENDED that they are also be included in the offer in order | |||
to maximize the possibility to establish the session without the need | to maximize the possibility to establish the session without the need | |||
for audio transcoding. | for audio transcoding. | |||
WebRTC clients are REQUIRED to implement the following audio codecs. | WebRTC clients are REQUIRED to implement the following audio codecs: | |||
o Opus [RFC6716], with the payload format specified in [Opus-RTP] | o Opus [RFC6716] with the payload format specified in [Opus-RTP]. | |||
and any ptime value up to 120 ms | ||||
o G.711 PCMA and PCMU with one channel, a rate of 8000 Hz and any | o G.711 PCMA and PCMU with the payload format specified in section | |||
ptime value up to 120 ms - see section 4.5.14 of [RFC3551] | 4.5.14 of [RFC3551]. | |||
o The audio/telephone-event media format as specified in [RFC4733]. | o The audio/telephone-event media format as specified in [RFC4733]. | |||
WebRTC clients are REQUIRED to be able to generate and consume the | WebRTC clients are REQUIRED to be able to generate and consume the | |||
following events: | following events: | |||
+------------+--------------------------------+-----------+ | +------------+--------------------------------+-----------+ | |||
|Event Code | Event Name | Reference | | |Event Code | Event Name | Reference | | |||
+------------+--------------------------------+-----------+ | +------------+--------------------------------+-----------+ | |||
| 0 | DTMF digit "0" | RFC4733 | | | 0 | DTMF digit "0" | RFC4733 | | |||
| 1 | DTMF digit "1" | RFC4733 | | | 1 | DTMF digit "1" | RFC4733 | | |||
End of changes. 6 change blocks. | ||||
9 lines changed or deleted | 8 lines changed or added | |||
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