SDP attribute "a=imageattr:": (2) revised SDP O/A [3GPP CT4 "SIS-CT"]
"Schwarz, Albrecht (Albrecht)" <[email protected]> Wed, 7 Aug 2013 10:21:02 +0000
| Newsgroups | gmane.ietf.megaco |
|---|---|
| Message-ID | <786615F3A85DF44AA2A76164A71FE1AC08A85C@FR711WXCHMBA03.zeu.alcatel-lucent.com> |
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The 2nd discussion subject was related to revised SDP O/A elements:
RFC 6236 explicitly indicates their (=3D RFC 5939 & RFC 6871) usage (see cl=
ause 3.2.6/RFC 6236).
...
a=3Dmcap:1 video H264/90000
a=3Dacap:1 imageattr:%1% send [x=3D720,y=3D576,sar=3D[0.91,1.0,1.09,1=
.45]]
...
Also 26.114 indicates (RFC 5939) usage in the example:
...
a=3Dtcap:1
The general comment made in the CT4 meeting: the mapping of these SDP elem=
ents from SIP to H.248 would need to take the work of H.248.80 into account=
(due to the different resource reservation principles at SIP and H.248 int=
erfaces).
-Albrecht
From: [email protected] [mailto:[email protected]] On Behalf Of=
Schwarz, Albrecht (Albrecht)
Sent: Mittwoch, 7. August 2013 12:07
To: ext Nevenka Biondic; [email protected]; [email protected]
Subject: [Megaco] SDP attribute "a=3Dimageattr:": (1) wildcarding [3GPP CT4=
"SIS-CT"]
Hi Nevenka, all,
you proposed to continue the technical discussion at next CT4 meeting; like=
to suggest to start in parallel the clarification of raised H.248 aspects=
.
The first topic is related to SDP wildcarding:
RFC 6236 allows wildcard usage for multiple attribute parameters.
I think we may just focus on the high level SDP format:
a=3Dimageattr:PT send attr-list recv attr-list
The wildcard "*" (ALL) may be applied principally for multiple attribute el=
ements (in red), right?
a=3Dimageattr:PT send attr-list recv attr-list
e.g., PT:
A wild card (*) can be specified for the payload type number to indicate th=
at it applies
to all payload types in the media description.
You mentioned (in the CT4 discussion) wildcard usage at the level of
1) PT
2) recv attr-list
as far as I remember, and the PT type wildcard is the difficult one, becaus=
e affecting possibly multiple media configurations, right?
My initial comments and understanding would be:
1. A "PT level" wildcard would imply multiple (reserved) media config=
urations, i.e., usage of ReserveGroup.
2. A "recv attr-list" level wildcard would enforce the MG to reply th=
e choosen/supported attribute values
3. Like to suggest you specify the SDP wildcarding of this attribute =
in H.248.39, because
a. the wildcard "*" is applicable for SIP signalling, whereas the SDP=
mapping to H.248 allows principally also to use additional wildcards (here=
e.g., "$" and "-");
and
b. possible interactions with ReserveValue/ReserveGroup.
4. Example from 26.114 ("I've copied one below"):
26.116 is not using the "PT level" wildcard at all, because there's just a =
single video codec (H.264) considered by 26.114, - right?
Regards,
Albrecht
_______
SIP/SDP example (26.114):
Table A.4.10a: Example SDP offer for H.264/AVC with image size negotiation
SDP offer
a=3Dtcap:1 RTP/AVPF
m=3Dvideo 49154 RTP/AVP 99
a=3Dpcfg:1 t=3D1
b=3DAS:315
b=3DRS:0
b=3DRR:2500
a=3Drtpmap:99 H264/90000
a=3Dfmtp:99 packetization-mode=3D0; profile-level-id=3D42e00c; \
sprop-parameter-sets=3DJ0LgDJWgUH6Af1A=3D,KM46gA=3D=3D
a=3Dimageattr:99 send [x=3D176,y=3D144] [x=3D224,y=3D176] [x=3D272,y=3D224]=
[x=3D320,y=3D240] recv [x=3D176,y=3D144] [x=3D224,y=3D176] [x=3D272,y=3D22=
4,q=3D0.6] [x=3D320,y=3D240]
a=3Drtcp-fb:* trr-int 5000
a=3Drtcp-fb:* nack
a=3Drtcp-fb:* nack pli
a=3Drtcp-fb:* ccm fir
a=3Drtcp-fb:* ccm tmmbr
a=3Dextmap:4 urn:3gpp:video-orientation
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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D">The 2<sup>nd</sup> discus=
sion subject was related to revised SDP O/A elements:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D"><o:p> </o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D">RFC 6236 explicitly indic=
ates their (=3D RFC 5939 & RFC 6871) usage (see clause 3.2.6/RFC 6236).=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New"">...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New""> a=3Dmcap:1 video H264/90000=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New""> a=3Dacap:1 imageattr:%1% se=
nd [x=3D720,y=3D576,sar=3D[0.91,1.0,1.09,1.45]]<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New""> ...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D"><o:p> </o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D">Also 26.114 indicates (RF=
C 5939) usage in the example:<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt"><span style=3D"font-siz=
e:9.0pt;font-family:"Courier New"">…<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt"><span style=3D"font-siz=
e:9.0pt;font-family:"Courier New"">a=3Dtcap:1</span><span style=
=3D"font-size:11.0pt;font-family:"Calibri","sans-serif"=
;color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D"><o:p> </o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D">The general comment made =
in the CT4 meeting: the mapping of these SDP elements from SIP to H.2=
48 would need to take the work of H.248.80 into account (due
to the different resource reservation principles at SIP and H.248 interfac=
es).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D"><o:p> </o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D">-Albrecht<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D"><o:p> </o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D"><o:p> </o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:"Tahoma","sans-serif"">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:"Tahoma",&qu=
ot;sans-serif""> [email protected] [mailto:[email protected]=
rg]
<b>On Behalf Of </b>Schwarz, Albrecht (Albrecht)<br>
<b>Sent:</b> Mittwoch, 7. August 2013 12:07<br>
<b>To:</b> ext Nevenka Biondic; [email protected]; [email protected].=
ORG<br>
<b>Subject:</b> [Megaco] SDP attribute "a=3Dimageattr:": (1) wild=
carding [3GPP CT4 "SIS-CT"]<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">Hi Nevenka, all,
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">you proposed to continue the technical =
discussion at next CT4 meeting; like to suggest to start in parallel the cl=
arification of raised H.248 aspects .<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">The first topic is related to SDP wildc=
arding:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">RFC 6236 allows wildcard usage for mult=
iple attribute parameters.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">I think we may just focus on the high l=
evel SDP format:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New""> a=3Dimageattr:PT send attr-=
list recv attr-list</span><span style=3D"font-size:11.0pt;font-family:"=
;Calibri","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">The
<span style=3D"color:red">wildcard “*”</span> (ALL) may be appl=
ied principally for multiple attribute elements (<span style=3D"color:red">=
in red</span>), right?<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New""> a=3Dimageattr:<span style=
=3D"color:red">PT</span> send
<span style=3D"color:red">attr-list</span> recv <span style=3D"color:red">a=
ttr-list</span></span><span style=3D"font-size:11.0pt;font-family:"Cal=
ibri","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">e.g., PT:
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New"">A wild card (*) can be specified for the payload type numb=
er to indicate that it applies</span><span style=3D"font-size:11.0pt;font-f=
amily:"Calibri","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co=
urier New""> to all payload types in the=
media description.
</span><span style=3D"font-size:11.0pt;font-family:"Calibri",&quo=
t;sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">You mentioned (in the CT4 discussion) w=
ildcard usage at the level of<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">1) PT<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">2) recv attr-list<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">as far as I remember, and the PT type w=
ildcard is the difficult one, because affecting possibly multiple media con=
figurations, right?<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">My initial comments and understanding w=
ould be:<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;margin-left:0cm;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:11.0pt;font-family:"Cali=
bri","sans-serif""><span style=3D"mso-list:Ignore">1.<span s=
tyle=3D"font:7.0pt "Times New Roman""> &nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
"Calibri","sans-serif"">A “PT level” wildca=
rd would imply multiple (reserved) media configurations, i.e., usage of Res=
erveGroup.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;margin-left:0cm;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:11.0pt;font-family:"Cali=
bri","sans-serif""><span style=3D"mso-list:Ignore">2.<span s=
tyle=3D"font:7.0pt "Times New Roman""> &nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
"Calibri","sans-serif"">A “recv attr-list” =
level wildcard would enforce the MG to reply the choosen/supported attribut=
e values<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;margin-left:0cm;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:11.0pt;font-family:"Cali=
bri","sans-serif""><span style=3D"mso-list:Ignore">3.<span s=
tyle=3D"font:7.0pt "Times New Roman""> &nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
"Calibri","sans-serif"">Like to suggest you specify the=
SDP wildcarding of this attribute in H.248.39, because<o:p></o:p></span></=
p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;margin-left:0cm;text-indent:-18.0pt;mso-list:l1 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:11.0pt;font-family:"Cali=
bri","sans-serif""><span style=3D"mso-list:Ignore">a.<span s=
tyle=3D"font:7.0pt "Times New Roman""> &nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
"Calibri","sans-serif"">the wildcard “*” is=
applicable for SIP signalling, whereas the SDP mapping to H.248 allows pri=
ncipally also to use additional wildcards (here e.g., “$” and &=
#8220;-“);<br>
and<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;margin-left:0cm;text-indent:-18.0pt;mso-list:l1 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:11.0pt;font-family:"Cali=
bri","sans-serif""><span style=3D"mso-list:Ignore">b.<span s=
tyle=3D"font:7.0pt "Times New Roman""> &nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
"Calibri","sans-serif"">possible interactions with Rese=
rveValue/ReserveGroup.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;margin-left:0cm;text-indent:-18.0pt;mso-list:l0 level1 lfo3">
<![if !supportLists]><span style=3D"font-size:11.0pt;font-family:"Cali=
bri","sans-serif""><span style=3D"mso-list:Ignore">4.<span s=
tyle=3D"font:7.0pt "Times New Roman""> &nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
"Calibri","sans-serif"">Example from 26.114 (“I&#=
8217;ve copied one below”):<br>
26.116 is not using the “PT level” wildcard at all, because the=
re’s just a single video codec (H.264) considered by 26.114, - right?=
<o:p></o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">Regards,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">Albrecht<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">_______<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif"">SIP/SDP example (26.114):<o:p></o:p></s=
pan></p>
</div>
<div style=3D"margin-top:3.0pt;margin-bottom:9.0pt">
<p class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><b><spa=
n style=3D"font-size:11.0pt;font-family:"Arial","sans-serif&=
quot;">Table A.4.10a: Example SDP offer for H.264/AVC with image size negot=
iation</span></b><span style=3D"font-size:11.0pt;font-family:"Calibri&=
quot;,"sans-serif""><o:p></o:p></span></p>
</div>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" width=3D"643=
" style=3D"width:482.25pt;margin-left:4.0pt">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><b><spa=
n style=3D"font-size:9.0pt;font-family:"Arial","sans-serif&q=
uot;">SDP offer</span></b><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Dtcap:1 RTP/AVPF
<o:p></o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">m=3Dvideo 49154 RTP/AVP 99
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Dpcfg:1 t=3D1<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">b=3DAS:315<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">b=3DRS:0<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">b=3DRR:2500<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Drtpmap:99 H264/90000<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Dfmtp:99 packetization-mode=3D0; profile-level-id=3D42e0=
0c; \<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New""> sprop-parameter-sets=3DJ0LgDJWgUH6=
Af1A=3D,KM46gA=3D=3D<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New";background:yellow">a=3Dimageattr:99 send [x=3D176,y=3D144] [=
x=3D224,y=3D176] [x=3D272,y=3D224] [x=3D320,y=3D240] recv [x=3D176,y=3D144]=
[x=3D224,y=3D176] [x=3D272,y=3D224,q=3D0.6] [x=3D320,y=3D240]</span><span =
style=3D"font-size:9.0pt;font-family:"Courier New""><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Drtcp-fb:* trr-int 5000<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Drtcp-fb:* nack<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Drtcp-fb:* nack pli<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Drtcp-fb:* ccm fir<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Drtcp-fb:* ccm tmmbr<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Cou=
rier New"">a=3Dextmap:4 urn:3gpp:video-orientation<o:p></o:p></span></=
p>
</div>
</td>
</tr>
</tbody>
</table>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca=
libri","sans-serif""> <o:p></o:p></span></p>
</div>
</div>
</body>
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