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From: "Roni Even (A)" <roni.even@huawei.com>
To: "payload@ietf.org" <payload@ietf.org>
Thread-Topic: new  document  - RTP Payload Format for Versatile Video Coding (VVC)
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Date: Thu, 5 Sep 2019 08:54:37 +0000
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Subject: [payload] new document - RTP Payload Format for Versatile Video Coding (VVC)
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Hi,
There is a new individual draft on RTP Payload Format for Versatile Video C=
oding (VVC) see https://tools.ietf.org/html/draft-zhao-payload-rtp-vvc-00

This memo describes an RTP payload format for the video coding  standard IT=
U-T Recommendation H.266 and ISO/IEC International  Standard 23090-3, both =
also known as Versatile Video Coding (VVC) and  developed by the Joint Vide=
o Experts Team (JVET).
The RTP payload  format allows for packetization of one or more Network Abs=
traction  Layer (NAL) units in each RTP packet payload as well as fragmenta=
tion  of a NAL unit into multiple RTP packets.
The payload format has wide  applicability in videoconferencing, Internet v=
ideo streaming, and  high-bitrate entertainment-quality video, among others=
.




Please review

Roni Even
Payload WG co-chair


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<p class=3D"MsoNormal">Hi,<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;mso-line-height-alt:0pt">
There is a new individual draft on <span style=3D"color:black">RTP Payload =
Format for Versatile Video Coding (VVC) see
</span><a href=3D"https://tools.ietf.org/html/draft-zhao-payload-rtp-vvc-00=
">https://tools.ietf.org/html/draft-zhao-payload-rtp-vvc-00</a><o:p></o:p><=
/p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;mso-line-height-alt:0pt">
<o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:black">This memo describes an R=
TP payload format for the video coding&nbsp; standard ITU-T Recommendation =
H.266 and ISO/IEC International&nbsp; Standard 23090-3, both also known as =
Versatile Video Coding (VVC) and&nbsp; developed by
 the Joint Video Experts Team (JVET).&nbsp; <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">The RTP payload&nbsp; fo=
rmat allows for packetization of one or more Network Abstraction&nbsp; Laye=
r (NAL) units in each RTP packet payload as well as fragmentation&nbsp; of =
a NAL unit into multiple RTP packets.&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">The payload format has w=
ide&nbsp; applicability in videoconferencing, Internet video streaming, and=
&nbsp; high-bitrate entertainment-quality video, among others.<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;mso-line-height-alt:0pt">
<o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;mso-line-height-alt:0pt">
<o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Please review <o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:black">Roni Even <o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Payload WG co-chair<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span>=
</p>
</div>
</body>
</html>

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From: "shuaiizhao(Shuai Zhao)" <shuaiizhao@tencent.com>
To: "avt@ietf.org" <avt@ietf.org>, "payload@ietf.org" <payload@ietf.org>
Thread-Topic: New Version Notification for draft-zhao-payload-rtp-vvc-00.txt
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Subject: [payload] AD review of draft-ietf-payload-tsvcis-01
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--00000000000037823c05925338a2
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Please accept my abject apology for having not handled this sooner: it got
lost, first in the AD transition and then in my own mess.  I=E2=80=99ve rev=
iewed it
now and will be processing it without further delay.


I have mostly editorial comments, which you can handle along with any other
last-call comments and include in a revised draft that you post after last
call ends in two weeks.  I will initiate last call right after I send this
review.


=E2=80=94 Section 1.1 =E2=80=94

Please switch to the new BCP 14 boilerplate (see RFC 8174) and add a
normative reference to RFC 8174.


=E2=80=94 Section 2 =E2=80=94


   Further, it is desirable to support the highest voice

   quality between endpoint which is only possible without the overhead


=E2=80=9Cendpoints=E2=80=9D


   Any unfilled bits in the last octet SHOULD be filled with zero.


I suggest that things are more robust if this is MUST, so recipients can
rely on the behaviour.  What would a reason be not to comply?  (And
similarly for the SHOULD in Section 3.1.2.)


=E2=80=94 Section 3.1 =E2=80=94


   here for all three MELPe rates [RFC8130] which with its

   recommendations now regarded as requirements.


I think the word =E2=80=9Cwhich=E2=80=9D needs to be removed.


=E2=80=94 Section 3.2 =E2=80=94


   The second to last trailing

   byte MUST contain the parameter count (TC) in octets and MAY

   represent any value from one to 255.


I don=E2=80=99t think this is correct use of MAY: you can=E2=80=99t just pi=
ck any value in
the range.  You have to use the correct parameter count.  So:


NEW

   The second to last trailing

   byte MUST contain the parameter count (TC) in octets (a value

   between 1 and 255, inclusive).

END


=E2=80=94 Section 3.3 =E2=80=94


   A TSVCIS RTP packet MAY consist of zero or more TSVCIS coder frames

   (each consisting of MELPe and TSVCIS coder data) followed by zero or

   one MELPe comfort noise frame.


Is there anything else it can consist of?  This seems a very odd use of
MAY, and I think you really just want to say that =E2=80=9Ca TSVCIS RTP pac=
ket
consists of....=E2=80=9D


   A TSVCIS RTP packet comprised of no coder frame and no comfort noise


A total nit that happens to be a pet peeve of mine (I have quite the
menagerie): =E2=80=9Ccomprising=E2=80=9D, please, not =E2=80=9Ccomprised of=
=E2=80=9D.


=E2=80=94 Section 4.1 =E2=80=94

You cite RFC 6838, but you=E2=80=99re still using an older template.  Pleas=
e update
this to match the template in 6838, and please put a reference to the
TSVCIS spec in the =E2=80=9CPublished Specification=E2=80=9D field.


=E2=80=94 Section 9 =E2=80=94

Please remove Section 9 now, rather than waiting for the RFC Editor to do
it.


=E2=80=94
Barry

--00000000000037823c05925338a2
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">Please accept my ab=
ject apology for having not handled this sooner: it got lost, first in the =
AD transition and then in my own mess.=C2=A0 I=E2=80=99ve reviewed it now a=
nd will be processing it without further delay.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">I have mostly edito=
rial comments, which you can handle along with any other last-call comments=
 and include in a revised draft that you post after last call ends in two w=
eeks.=C2=A0 I will initiate last call right after I send this review.</span=
></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 1=
.1 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">Please switch to th=
e new BCP 14 boilerplate (see RFC 8174) and add a normative reference to RF=
C 8174.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 2=
 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 Furthe=
r, it is desirable to support the highest voice</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 qualit=
y between endpoint which is only possible without the overhead</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=9Cendpoints=
=E2=80=9D</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 Any un=
filled bits in the last octet SHOULD be filled with zero.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">I suggest that thin=
gs are more robust if this is MUST, so recipients can rely on the behaviour=
.=C2=A0 What would a reason be not to comply?=C2=A0 (And similarly for the =
SHOULD in Section 3.1.2.)</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 3=
.1 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 here f=
or all three MELPe rates [RFC8130] which with its</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 recomm=
endations now regarded as requirements.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">I think the word =
=E2=80=9Cwhich=E2=80=9D needs to be removed.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 3=
.2 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 The se=
cond to last trailing</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 byte M=
UST contain the parameter count (TC) in octets and MAY</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 repres=
ent any value from one to 255.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">I don=E2=80=99t thi=
nk this is correct use of MAY: you can=E2=80=99t just pick any value in the=
 range.=C2=A0 You have to use the correct parameter count.=C2=A0 So:</span>=
</p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">NEW</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 The se=
cond to last trailing</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 byte M=
UST contain the parameter count (TC) in octets (a value</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 betwee=
n 1 and 255, inclusive).</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">END</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 3=
.3 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 A TSVC=
IS RTP packet MAY consist of zero or more TSVCIS coder frames</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 (each =
consisting of MELPe and TSVCIS coder data) followed by zero or</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 one ME=
LPe comfort noise frame.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">Is there anything e=
lse it can consist of?=C2=A0 This seems a very odd use of MAY, and I think =
you really just want to say that =E2=80=9Ca TSVCIS RTP packet consists of..=
..=E2=80=9D</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=C2=A0=C2=A0 A TSVC=
IS RTP packet comprised of no coder frame and no comfort noise</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">A total nit that ha=
ppens to be a pet peeve of mine (I have quite the menagerie): =E2=80=9Ccomp=
rising=E2=80=9D, please, not =E2=80=9Ccomprised of=E2=80=9D.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 4=
.1 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">You cite RFC 6838, =
but you=E2=80=99re still using an older template.=C2=A0 Please update this =
to match the template in 6838, and please put a reference to the TSVCIS spe=
c in the =E2=80=9CPublished Specification=E2=80=9D field.</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica;min-height:13.8px"><span style=3D"font-size:12pt"><=
/span><br></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">=E2=80=94 Section 9=
 =E2=80=94</span></p>
<p style=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:norma=
l;font-family:Helvetica"><span style=3D"font-size:12pt">Please remove Secti=
on 9 now, rather than waiting for the RFC Editor to do it.</span></p><p sty=
le=3D"margin:0px;font-stretch:normal;font-size:12px;line-height:normal;font=
-family:Helvetica"><span style=3D"font-size:12pt"><br></span></p><p style=
=3D"margin:0px;font-stretch:normal;line-height:normal;font-family:Helvetica=
"></p><div dir=3D"auto">=E2=80=94=C2=A0</div><div dir=3D"auto">Barry</div><=
div dir=3D"auto"><br></div><p></p>

--00000000000037823c05925338a2--


From nobody Wed Sep 11 21:06:50 2019
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Subject: [payload] Last Call: <draft-ietf-payload-tsvcis-01.txt> (RTP Payload Format for TSVCIS Codec) to Proposed Standard
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The IESG has received a request from the Audio/Video Transport Payloads WG
(payload) to consider the following document: - 'RTP Payload Format for
TSVCIS Codec'
  <draft-ietf-payload-tsvcis-01.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits final
comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2019-09-25. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the beginning of
the Subject line to allow automated sorting.

Abstract


   This document describes the RTP payload format for the Tactical
   Secure Voice Cryptographic Interoperability Specification (TSVCIS)
   speech coder.  TSVCIS is a scalable narrowband voice coder supporting
   varying encoder data rates and fallbacks.  It is implemented as an
   augmentation to the Mixed Excitation Linear Prediction Enhanced
   (MELPe) speech coder by conveying additional speech coder parameters
   for enhancing voice quality.  TSVCIS augmented speech data is
   processed in conjunction with its temporal matched MELP 2400 speech
   data.  The RTP packetization of TSVCIS and MELPe speech coder data is
   described in detail.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-payload-tsvcis/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-payload-tsvcis/ballot/


No IPR declarations have been submitted directly on this I-D.





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Subject: [payload] payload - Not having a session at IETF 106
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Roni Even, a chair of the payload working group, indicated that the payload working group does not plan to hold a session at IETF 106.

This message was generated and sent by the IETF Meeting Session Request Tool.



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SGksDQpUaGUgUGF5bG9hZCBXRyB3aWxsIG5vdCBoYXZlIGl0cyBvd24gc2Vzc2lvbiBpbiBJRVRG
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From nobody Fri Sep 20 11:14:45 2019
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From: Barry Leiba <barryleiba@computer.org>
Date: Fri, 20 Sep 2019 14:14:29 -0400
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Subject: Re: [payload] WG Action: Rechartered Audio/Video Transport Core Maintenance (avtcore)
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Hi, all,
Now that the AVTCORE recharter is official and the PAYLOAD and XRBLOCK
work is officially moved back into AVTCORE, it's time to close the
other two working groups.

As I announced earlier, Roni Even has joined Rachel and Jonathan as
co-chair of AVTCORE, and he will continue shepherding payload-related
documents.  Thanks to all three of you for your continuing service and
for the work you do.

After I send this I will "push the button" on PAYLOAD and XRBLOCK, and
I'll give here my appreciation for the work and the years of service
as chairs by Ali Begen, Dan Roma=C5=9Fcanu, and Shida Schubert.

I intend to close the mailing lists of PAYLOAD and XRBLOCK and have
them automatically redirect to <avt@ietf.org>.

Barry, ART AD

On Fri, Sep 20, 2019 at 1:48 PM The IESG <iesg-secretary@ietf.org> wrote:
>
> The Audio/Video Transport Core Maintenance (avtcore) WG in the Applicatio=
ns
> and Real-Time Area of the IETF has been rechartered. For additional
> information, please contact the Area Directors or the WG Chairs.
>
> Audio/Video Transport Core Maintenance (avtcore)
> -----------------------------------------------------------------------
> Current status: Active WG
>
> Chairs:
>   Jonathan Lennox <jonathan.lennox42@gmail.com>
>   Rachel Huang <rachel.huang@huawei.com>
>   Roni Even <roni.even@huawei.com>
>
> Assigned Area Director:
>   Barry Leiba <barryleiba@computer.org>
>
> Applications and Real-Time Area Directors:
>   Adam Roach <adam@nostrum.com>
>   Alexey Melnikov <aamelnikov@fastmail.fm>
>   Barry Leiba <barryleiba@computer.org>
>
> Mailing list:
>   Address: avt@ietf.org
>   To subscribe: https://www.ietf.org/mailman/listinfo/avt
>   Archive: https://mailarchive.ietf.org/arch/browse/avt/
>
> Group page: https://datatracker.ietf.org/group/avtcore/
>
> Charter: https://datatracker.ietf.org/doc/charter-ietf-avtcore/
>
> The Real-time Transport Protocol (RTP) along with its associated profiles
> and payload formats provides for real-time transmission of audio and
> video over unicast and multicast transports. RTP is widely implemented
> and deployed for a broad range of applications, from telephony to
> television over IP. RTP itself is now an Internet Standard. Its
> associated profiles, extensions, and payload formats are currently at
> various levels of standards maturity. As new applications emerge, there
> is a need for guidelines for the use of the RTP/RTCP protocols and
> extensions specific to those applications.
>
> The AVTCORE working group is chartered for the following tasks:
>
> 1. To maintain the core RTP/RTCP specifications and the AVP, SAVP, AVPF,
> and SAVPF profiles. The group will provide architectural guidance for
> extending the protocols and guidelines for their proper use.
>
> 2. To develop application-specific guidelines for the use of RTP/RTCP
> protocols with the AVP, SAVP, AVPF, and SAVPF profiles, and extensions to
> those protocols that are driven by application-specific needs.
>
> 3. To specify and maintain payload formats for use with RTP. The working
> group will develop RTP payload formats for new media codecs, review and
> revise existing payload formats to advance those that are especially
> useful to Internet Standard, and declare others Historic.  The group will
> follow the guidelines established in "Guidelines for Writers of RTP
> Payload Format Specifications" [BCP 36] and "How to Write an RTP Payload
> Format" (RFC 8088), and is responsible for maintaining those guidelines.
>
> 4. To evaluate and process proposals for RTP eXtended Report Block
> (XRBLOCK) definitions containing new metrics. The group will work within
> the framework defined by RFC 3611, "RTP Control Protocol Extended Reports
> (RTCP XR)" along with other RTP monitoring architecture being developed
> in the working group. It will follow the guidelines established in RFC
> 5968, "Guidelines for Extending the RTP Control Protocol (RTCP)" and RFC
> 6390, "Guidelines for Considering New Performance Metric Development".
>
> The AVTCORE working group will coordinate closely with the Security Area
> while working on maintenance and enhancements to the SRTP Profile (SAVP).
>
> Milestones:
>
>   Feb 2019 - Submit Guidelines for using the Multiplexing Features of RTP=
 for
>   Informational
>
>   Mar 2019 - Submit RTP Payload Format for the TETRA Audio Codec
>
>   Apr 2019 - Submit RTP Header Extension for Video Frame Information for
>   Proposed Standard
>
>   Jun 2019 - Submit Feedback Mechanism for RTP Congestion Control for
>   Proposed Standard
>
>   Nov 2019 - Submit RTP Payload Format for VP9 Video for Proposed Standar=
d
>
>   Mar 2020 - Submit RTP Payload Format for ISO/IEC 21122 (JPEG XS) for
>   Proposed Standard
>
>   Mar 2020 - Submit RTP Payload Format for TTML Timed Text for Proposed
>   Standard
>
>


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Subject: [payload] WG Action: Conclusion of Audio/Video Transport Payloads (payload)
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The Audio/Video Transport Payloads (payload) WG in the Applications and 
Real-Time Area has concluded. The IESG contact persons are Barry Leiba, 
Alexey Melnikov, and Adam Roach.

The mailing list will be closed. The PAYLOAD work continues and will now 
be done in AVTCORE.

