
From nobody Wed Aug  3 11:54:47 2016
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From: Adam Roach <adam@nostrum.com>
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Date: Wed, 3 Aug 2016 13:54:36 -0500
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Cc: "Mo Zanaty \(mzanaty\)" <mzanaty@cisco.com>
Subject: [video-codec] Berlin Minutes
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Draft minutes have been posted:

https://www.ietf.org/proceedings/96/minutes/minutes-96-netvc

Please send any proposed amendments or corrections to me and Mo by the 
end of next week.

/a


From nobody Thu Aug  4 14:18:14 2016
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From: Adam Roach <adam@nostrum.com>
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Subject: [video-codec] WGLC: draft-ietf-netvc-requirements
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[as chair]

NETVC participants:

We would like to start a two-week working group last call on the codec 
requirements document:

https://tools.ietf.org/html/draft-ietf-netvc-requirements-02

All working group participants are encouraged to carefully read the 
document and comment on the mailing list -- even something simple like 
"I have reviewed the document and believe it is in good shape" is helpful.

I'll also note that the question as to whether we request publication of 
this document as an RFC is still open. As part of this last call, please 
indicate whether you believe such publication would be of value. If we 
do not request publication, we will instead announce a document freeze 
at some point after the end of WGLC (roughly, the amount of time 
typically between end of WGLC and publication request).

Thanks!

/a


From nobody Fri Aug  5 09:15:41 2016
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From: Jonathan Lennox <jonathan@vidyo.com>
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Thread-Topic: [video-codec] WGLC: draft-ietf-netvc-requirements
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From nobody Wed Aug 24 09:07:42 2016
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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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[as chair]

As a reminder, the WGLC for this document ends tomorrow. If you have any 
interest in commenting on the requirements before we freeze them, please 
comment now.

Thanks.

/a

On 8/4/16 16:18, Adam Roach wrote:
> [as chair]
>
> NETVC participants:
>
> We would like to start a two-week working group last call on the codec 
> requirements document:
>
> https://tools.ietf.org/html/draft-ietf-netvc-requirements-02
>
> All working group participants are encouraged to carefully read the 
> document and comment on the mailing list -- even something simple like 
> "I have reviewed the document and believe it is in good shape" is 
> helpful.
>
> I'll also note that the question as to whether we request publication 
> of this document as an RFC is still open. As part of this last call, 
> please indicate whether you believe such publication would be of 
> value. If we do not request publication, we will instead announce a 
> document freeze at some point after the end of WGLC (roughly, the 
> amount of time typically between end of WGLC and publication request).
>
> Thanks!
>
> /a
>
> _______________________________________________
> video-codec mailing list
> video-codec@ietf.org
> https://www.ietf.org/mailman/listinfo/video-codec



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From: Andrey Norkin <anorkin@netflix.com>
Date: Wed, 24 Aug 2016 15:25:39 -0700
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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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I have several comments, which I discussed with Alexey and some other
participants during the Berlin meeting. The version cited above does not
address them since it was published before our discussion.

Technical comments:

1. Page 12. Section 3.1.2. It may be useful to explicitly mention that
levels definition may change in the future when we know better what
complexity the codec has.
2. Page 13. Section 3.2.1. "Support of arbitrary resolution for such
applications where a picture can have an arbitrary size (e.g., in
screencasting)"  -->  "Support of arbitrary resolution *according to level
constraints* for such applications where a picture can have an arbitrary
size (e.g., in screencasting)"
It is not practical for the codec to support completely arbitrary
resolutions (e.g. a one-macroblock wide and very tall picture does not need
to be supported).
3. Page 15. If we move Section 3.3.3 "Complexity" from optional to basic
requirements, it would likely address Jonathan's comment.
4. Page 15-16, Section 4.1. Compression performance evaluation.  It is
proposed to calculate the BD-rate based on 12 bitrates, where three groups
of four bitrates correspond to the low, medium, and high bitrate ranges. It
would be better to align QP's or quality levels of two codecs rather than
bitrates. The BD-rate savings are calculated on overlap in quality (e.g.
PSNR or MS-SSIM values) between the rate-distortion curves of two codecs.
If we align the bitrates then a big difference in codecs performance (i.e.
a big distance between the RD-curves) would translate to poor overlap in
quality ranges and less reliable BD-rate values. Another point is that the
same bitrate may correspond to a very high quality for an easy sequence and
a poor quality for a difficult sequence. Let's use alignment in QPs/quality
levels instead as the basis for generating the bitstreams.
5. Same section. We should not require a 20-25% improvement on each quality
range and each resolution. We could require instead 20-25% bitrate savings
(average of three quality ranges) on high resolutions and somewhat lower
(e.g. 15%) on lower resolutions. Finally, the requirements for improvements
on each quality range could be half of the requirements for the average of
three ranges. For example, we might not want to discard a proposed codec if
it gets less than 20% BD-rate reduction at a very high quality range, where
the codec is rarely used.
6. Page 16. Section 4.1. "To assess the quality of output (decoded)
sequences, two indexes, PSNR [3] and MS-SSIM [3,11], should be separately
calculated for each color plane." We should not calculate MS-SSIM for
chroma planes since it was developed for luminance signal and will likely
not reflect the visual quality (chroma is usually much smoother than luma).
We can and probably should calculate the chroma PSNR to ensure it does not
get a big drop due to a change in luma/chroma bit allocation. The question
is whether we should use it when evaluating the bitrate savings (in my
opinion, we do not have to but if we do, we should use some smaller weights
for chroma planes, such as 1/8th for each chroma plane and 6/8th for the
luma).

Editorial comments:

1. Page 6. End of Section 2.1 - Fix the bullet sign.
2. Page 13. Section 3.1.4. Any elementary stream -> An elementary stream.
3. Page 14. Section 3.2.2. "Note 1: end-to-end delay should be up to 320 ms
[2] but it's preferable value should be less than 100 ms [7]"  Change
"it's" to "its".

Best regards,
Andrey

On Wed, Aug 24, 2016 at 9:07 AM, Adam Roach <adam@nostrum.com> wrote:

> [as chair]
>
> As a reminder, the WGLC for this document ends tomorrow. If you have any
> interest in commenting on the requirements before we freeze them, please
> comment now.
>
> Thanks.
>
> /a
>
>
> On 8/4/16 16:18, Adam Roach wrote:
>
>> [as chair]
>>
>> NETVC participants:
>>
>> We would like to start a two-week working group last call on the codec
>> requirements document:
>>
>> https://tools.ietf.org/html/draft-ietf-netvc-requirements-02
>>
>> All working group participants are encouraged to carefully read the
>> document and comment on the mailing list -- even something simple like "I
>> have reviewed the document and believe it is in good shape" is helpful.
>>
>> I'll also note that the question as to whether we request publication of
>> this document as an RFC is still open. As part of this last call, please
>> indicate whether you believe such publication would be of value. If we do
>> not request publication, we will instead announce a document freeze at some
>> point after the end of WGLC (roughly, the amount of time typically between
>> end of WGLC and publication request).
>>
>> Thanks!
>>
>> /a
>>
>> _______________________________________________
>> video-codec mailing list
>> video-codec@ietf.org
>> https://www.ietf.org/mailman/listinfo/video-codec
>>
>
>
> _______________________________________________
> video-codec mailing list
> video-codec@ietf.org
> https://www.ietf.org/mailman/listinfo/video-codec
>

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<div dir=3D"ltr">I have several comments, which I discussed with Alexey and=
 some other participants during the Berlin meeting. The version cited above=
 does not address them since it was published before our discussion.=C2=A0<=
div><br></div><div>Technical comments:</div><div><br></div><div>1. Page 12.=
 Section 3.1.2. It may be useful to explicitly mention that levels definiti=
on may change in the future when we know better what complexity the codec h=
as.</div><div>2. Page 13. Section 3.2.1. &quot;Support of arbitrary resolut=
ion for such applications where a picture can have an arbitrary size (e.g.,=
 in screencasting)&quot; =C2=A0--&gt; =C2=A0&quot;Support of arbitrary reso=
lution <b>according to level constraints</b> for such applications where a =
picture can have an arbitrary size (e.g., in screencasting)&quot;</div><div=
>It is not practical for the codec to support completely arbitrary resoluti=
ons (e.g. a one-macroblock wide and very tall picture does not need to be s=
upported).</div><div>3. Page 15. If we move Section 3.3.3 &quot;Complexity&=
quot; from optional to basic requirements, it would likely address Jonathan=
&#39;s comment.=C2=A0</div><div>4. Page 15-16, Section 4.1. Compression per=
formance evaluation.=C2=A0 It is proposed to calculate the BD-rate based on=
 12 bitrates, where three groups of four bitrates correspond to the low, me=
dium, and high bitrate ranges. It would be better to align QP&#39;s or qual=
ity levels of two codecs rather than bitrates. The BD-rate savings are calc=
ulated on overlap in quality (e.g. PSNR or MS-SSIM values) between the rate=
-distortion curves of two codecs. If we align the bitrates then a big diffe=
rence in codecs performance (i.e. a big distance between the RD-curves) wou=
ld translate to poor overlap in quality ranges and less reliable BD-rate va=
lues. Another point is that the same bitrate may correspond to a very high =
quality for an easy sequence and a poor quality for a difficult sequence. L=
et&#39;s use alignment in QPs/quality levels instead as the basis for gener=
ating the bitstreams.=C2=A0</div><div>5. Same section. We should not requir=
e a 20-25% improvement on each quality range and each resolution. We could =
require instead 20-25% bitrate savings (average of three quality ranges) on=
 high resolutions and somewhat lower (e.g. 15%) on lower resolutions. Final=
ly, the requirements for improvements on each quality range could be half o=
f the requirements for the average of three ranges. For example, we might n=
ot want to discard a proposed codec if it gets less than 20% BD-rate reduct=
ion at a very high quality range, where the codec is rarely used. =C2=A0</d=
iv><div>6. Page 16. Section 4.1. &quot;To assess the quality of output (dec=
oded) sequences, two indexes, PSNR [3] and MS-SSIM [3,11], should be separa=
tely calculated for each color plane.&quot; We should not calculate MS-SSIM=
 for chroma planes since it was developed for luminance signal and will lik=
ely not reflect the visual quality (chroma is usually much smoother than lu=
ma). We can and probably should calculate the chroma PSNR to ensure it does=
 not get a big drop due to a change in luma/chroma bit allocation. The ques=
tion is whether we should use it when evaluating the bitrate savings (in my=
 opinion, we do not have to but if we do, we should use some smaller weight=
s for chroma planes, such as 1/8th for each chroma plane and 6/8th for the =
luma).=C2=A0</div><div><br></div><div>Editorial comments:</div><div><br></d=
iv><div>1. Page 6. End of Section 2.1 - Fix the bullet sign.=C2=A0</div><di=
v><div>2. Page 13. Section 3.1.4. Any elementary stream -&gt; An elementary=
 stream.=C2=A0</div></div><div>3. Page 14. Section 3.2.2. &quot;Note 1: end=
-to-end delay should be up to 320 ms [2] but it&#39;s preferable value shou=
ld be less than 100 ms [7]&quot; =C2=A0Change &quot;it&#39;s&quot; to &quot=
;its&quot;.</div><div><br></div><div>Best regards,</div><div>Andrey</div></=
div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, Aug 2=
4, 2016 at 9:07 AM, Adam Roach <span dir=3D"ltr">&lt;<a href=3D"mailto:adam=
@nostrum.com" target=3D"_blank">adam@nostrum.com</a>&gt;</span> wrote:<br><=
blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px=
 #ccc solid;padding-left:1ex">[as chair]<br>
<br>
As a reminder, the WGLC for this document ends tomorrow. If you have any in=
terest in commenting on the requirements before we freeze them, please comm=
ent now.<br>
<br>
Thanks.<span class=3D"HOEnZb"><font color=3D"#888888"><br>
<br>
/a</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
On 8/4/16 16:18, Adam Roach wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
[as chair]<br>
<br>
NETVC participants:<br>
<br>
We would like to start a two-week working group last call on the codec requ=
irements document:<br>
<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-netvc-requirements-02" re=
l=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/dr<wbr>aft-i=
etf-netvc-requirements-02</a><br>
<br>
All working group participants are encouraged to carefully read the documen=
t and comment on the mailing list -- even something simple like &quot;I hav=
e reviewed the document and believe it is in good shape&quot; is helpful.<b=
r>
<br>
I&#39;ll also note that the question as to whether we request publication o=
f this document as an RFC is still open. As part of this last call, please =
indicate whether you believe such publication would be of value. If we do n=
ot request publication, we will instead announce a document freeze at some =
point after the end of WGLC (roughly, the amount of time typically between =
end of WGLC and publication request).<br>
<br>
Thanks!<br>
<br>
/a<br>
<br>
______________________________<wbr>_________________<br>
video-codec mailing list<br>
<a href=3D"mailto:video-codec@ietf.org" target=3D"_blank">video-codec@ietf.=
org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/video-codec" rel=3D"norefe=
rrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/video-co=
dec</a><br>
</blockquote>
<br>
<br>
______________________________<wbr>_________________<br>
video-codec mailing list<br>
<a href=3D"mailto:video-codec@ietf.org" target=3D"_blank">video-codec@ietf.=
org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/video-codec" rel=3D"norefe=
rrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/video-co=
dec</a><br>
</div></div></blockquote></div><br></div>

--001a113d5080d4111a053ad8c26a--


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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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Jonathan Lennox wrote:
> One thing I would like to see in the document (probably in the error resilience section, 3.2.5) is an explicit requirement to support independently-decodable subframes that can be MTU-targeted by an encoder.  This is very important for error resilience for RTP-packetized streams.  (See RFC 2736, to which an informative reference probably wouldn’t be out of order.)

In general I support this idea, but I'm a little wary of writing this 
requirement in a way that specifies a solution (independently-decodable 
subframes) instead of the problem it solves. Any ideas for actual text 
we could use?


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From: Jonathan Lennox <jonathan@vidyo.com>
To: "Timothy B. Terriberry" <tterribe@xiph.org>
Thread-Topic: [video-codec] WGLC: draft-ietf-netvc-requirements
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From nobody Fri Aug 26 15:43:09 2016
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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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Jonathan Lennox wrote:
> So perhaps" “The codec should support mechanisms that allow individual packets to be sent in common network protocols without bitstream dependency between the packets.”  Thoughts?

That feels like it's moving in the right direction. Perhaps the better 
question is, "What breaks if there is a bitstream dependency?" That 
seems like it could tell you what the actual requirement is.


From nobody Fri Aug 26 16:32:35 2016
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From: Andrey Norkin <anorkin@netflix.com>
Date: Fri, 26 Aug 2016 16:32:27 -0700
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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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--001a1130cd7e7afe26053b01ed87
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The codec should support mechanisms that allow individual packets sent in
common network protocols to be independently decodable by the entropy
decoder (including packets related to the same picture/frame).

On Fri, Aug 26, 2016 at 3:43 PM, Timothy B. Terriberry <tterribe@xiph.org>
wrote:

> Jonathan Lennox wrote:
>
>> So perhaps" =E2=80=9CThe codec should support mechanisms that allow indi=
vidual
>> packets to be sent in common network protocols without bitstream depende=
ncy
>> between the packets.=E2=80=9D  Thoughts?
>>
>
> That feels like it's moving in the right direction. Perhaps the better
> question is, "What breaks if there is a bitstream dependency?" That seems
> like it could tell you what the actual requirement is.
>
>
> _______________________________________________
> video-codec mailing list
> video-codec@ietf.org
> https://www.ietf.org/mailman/listinfo/video-codec
>

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<div dir=3D"ltr"><span style=3D"font-size:12.8px">The codec should support =
mechanisms that allow individual packets sent in common network protocols t=
o be independently decodable by the entropy decoder (including packets rela=
ted to the same picture/frame).=C2=A0</span></div><div class=3D"gmail_extra=
"><br><div class=3D"gmail_quote">On Fri, Aug 26, 2016 at 3:43 PM, Timothy B=
. Terriberry <span dir=3D"ltr">&lt;<a href=3D"mailto:tterribe@xiph.org" tar=
get=3D"_blank">tterribe@xiph.org</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><span class=3D"">Jonathan Lennox wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
So perhaps&quot; =E2=80=9CThe codec should support mechanisms that allow in=
dividual packets to be sent in common network protocols without bitstream d=
ependency between the packets.=E2=80=9D=C2=A0 Thoughts?<br>
</blockquote>
<br></span>
That feels like it&#39;s moving in the right direction. Perhaps the better =
question is, &quot;What breaks if there is a bitstream dependency?&quot; Th=
at seems like it could tell you what the actual requirement is.<div class=
=3D"HOEnZb"><div class=3D"h5"><br>
<br>
______________________________<wbr>_________________<br>
video-codec mailing list<br>
<a href=3D"mailto:video-codec@ietf.org" target=3D"_blank">video-codec@ietf.=
org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/video-codec" rel=3D"norefe=
rrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/video-co=
dec</a><br>
</div></div></blockquote></div><br></div>

--001a1130cd7e7afe26053b01ed87--


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From: Alexandros Eleftheriadis <alex.eleftheriadis@gmail.com>
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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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Don=E2=80=99t forget the MTU targeting capability.=20

What you get is ensuring your ability to decode the media in individual =
packets when other media packets may be lost, and also minimizing =
packetization overhead by sending as much media data as possible in a =
single packet.=20


> On Aug 27, 2016, at 1:43 AM, Timothy B. Terriberry <tterribe@xiph.org> =
wrote:
>=20
> Jonathan Lennox wrote:
>> So perhaps" =E2=80=9CThe codec should support mechanisms that allow =
individual packets to be sent in common network protocols without =
bitstream dependency between the packets.=E2=80=9D  Thoughts?
>=20
> That feels like it's moving in the right direction. Perhaps the better =
question is, "What breaks if there is a bitstream dependency?" That =
seems like it could tell you what the actual requirement is.
>=20
> _______________________________________________
> video-codec mailing list
> video-codec@ietf.org
> https://www.ietf.org/mailman/listinfo/video-codec


From nobody Mon Aug 29 14:56:19 2016
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Subject: [video-codec] NomCom 2016-2017: Call for Nominations
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The 2016-17 Nominating Committee (Nomcom) is seeking nominations from
now until October 8, 2016. The open positions being considered by this
year's Nomcom can be found at the end of this email and also on this
year's Nomcom website:

https://datatracker.ietf.org/nomcom/2016/

Nominations may be made by selecting the Nominate link at the top of
the Nomcom 2016 home page, or by visiting the following URL:

https://datatracker.ietf.org/nomcom/2016/nominate/

   {Note that nominations made using the web tool require an ietf.org
    datatracker account. You can create a datatracker ietf.org account
    if you don't have one already by visiting the following URL:
    https://datatracker.ietf.org/accounts/create/ }

If you are unable to use the web form, nominations may instead be made
by email to nomcom-16@ietf.org. If using email, please include the word
"Nominate" in the Subject and indicate in the email who is being
nominated, their email address (to confirm acceptance of the
nomination), and the position for which you are making the nomination.
If you are nominating someone other than yourself, please tell us if
we may tell the nominee that you were the one who made the nomination.
If you wish to nominate someone via email for more than one position,
please use separate emails to do so.

Self-nomination is welcome!

Willing nominees will be asked to fill out a questionnaire
specific to the position for which they are nominated.  The questionnaires
will be available on September 2, 2016 and have a submission deadline of
October 13, 2016.

NomCom 2016-17 will follow the policy for "Open Disclosure of Willing
Nominees" described in BCP 10/RFC 7437.  As stated in RFC 7437: "The
list of nominees willing to be considered for positions under review
in the current Nomcom cycle is not confidential". Willing nominees for
each position will be listed in a publicly accessible way - anyone
with a datatracker account may access the lists.  Additionally, the
nomination form asks if we may share your own name with the
nominee. In all other ways, the confidentiality requirements of BCP10
remain in effect.  All feedback and all Nomcom deliberations will
remain confidential and will not be disclosed.

There is a field on the form you can mark in order to allow the Nomcom
to tell the nominee that you were the one who made the
nomination. This defaults to “no” - so if you don't mark the field
we won’t tell.

In order to ensure time to collect sufficient community feedback about
each of the willing nominees, nominations must be received by the
NomCom on or before October 8, 2016.

Please submit your nominations as early as possible for the sake of
your nominees. Note that nominations should not wait for management
permission, as it is easier to decline the nomination than put one in
late.

The Nomcom appoints individuals to fill the open slots on the IAOC,
the IAB, and the IESG. The list of people and posts whose terms end
with the March 2017 IETF meeting, and thus the positions for which
this Nomcom is responsible, follows:

IAOC

     Lou Berger

IAB

     Ralph Droms*
     Russ Housley*
     Robert Sparks
     Andrew Sullivan
     Dave Thaler*
     Suzanne Woolf

IESG

     Jari Arkko (GEN)*
     Deborah Brungard (RTG)
     Ben Campbell (ART)
     Spencer Dawkins (TSV)
     Stephen Farrell (SEC)*
     Joel Jaeggli (OPS)*
     Terry Manderson (INT)
     Alvaro Retana (RTG)

*- have indicated that they do not intend to accept a
renomination. This information is always up to date on
https://datatracker.ietf.org/nomcom/2016/

Please be resourceful in identifying possible candidates for these
positions, as developing our talent is a very crucial requirement for
the IETF, and also, please consider accepting a nomination.  You'll
find extensive information about specific positions, developed by the
IAB, IESG, and IAOC, under individual tabs at:

   https://datatracker.ietf.org/nomcom/2016/requirements/

In addition to nominations, the Nomcom seeks community input on the
positions themselves.  We need and welcome the community's views and
input on the jobs within each organization. If you have ideas on the
positions' responsibilities (more, less, different), please let us
know.

Please send suggestions and feedback about this to nomcom-16@ietf.org.

Thank you for your help in identifying qualified nominees!

Lucy Lynch
Nomcom Chair 2016-17
nomcom-chair-2016@ietf.org
llynch@civil-tongue.net


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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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Apparently Andrey's comments got caught in gmail's filters (thanks,
DMARC), so make sure to check the archive if you didn't get them:

https://www.ietf.org/mail-archive/web/video-codec/current/msg00499.html

On 08/04/2016 02:18 PM, Adam Roach wrote:
> [as chair]
> 
> NETVC participants:
> 
> We would like to start a two-week working group last call on the codec
> requirements document:
> 
> https://tools.ietf.org/html/draft-ietf-netvc-requirements-02
> 
> All working group participants are encouraged to carefully read the
> document and comment on the mailing list -- even something simple like
> "I have reviewed the document and believe it is in good shape" is helpful.
> 
> I'll also note that the question as to whether we request publication of
> this document as an RFC is still open. As part of this last call, please
> indicate whether you believe such publication would be of value. If we
> do not request publication, we will instead announce a document freeze
> at some point after the end of WGLC (roughly, the amount of time
> typically between end of WGLC and publication request).
> 
> Thanks!
> 
> /a
> 
> _______________________________________________
> video-codec mailing list
> video-codec@ietf.org
> https://www.ietf.org/mailman/listinfo/video-codec


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From: "Thomas Davies (thdavies)" <thdavies@cisco.com>
To: Alexandros Eleftheriadis <alex.eleftheriadis@gmail.com>, "Timothy B. Terriberry" <tterribe@xiph.org>
Thread-Topic: [video-codec] WGLC: draft-ietf-netvc-requirements
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Date: Thu, 1 Sep 2016 02:58:40 +0000
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References: <69b8f1bd-2f52-3f5a-b50d-f0431c2d4e1a@nostrum.com> <3606CD67-116D-4BDD-8D6E-5A7FD69DD35C@vidyo.com> <57BE2136.7010302@xiph.org> <89A06261-4E4E-4AC4-9277-C2A0843624D4@vidyo.com> <85D387C6-464E-46EB-8C25-DB8478C52F23@vidyo.com> <57C0C5F5.4050708@xiph.org> <E4E4008C-639F-480F-875A-A3DD594F2419@gmail.com>
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From nobody Wed Aug 31 20:02:26 2016
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Subject: Re: [video-codec] WGLC: draft-ietf-netvc-requirements
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Thomas Davies (thdavies) wrote:
> My suggestion would be something like: "the codec should support effective mechanisms for allowing decoding and reconstruction of significant parts of pictures in the event that parts of the picture data are lost in transmission".

Yes, that's much more like what a requirement should sound like to me.

