v=0
o=- 3858744756 316989898 IN IP4 172.xx.xxx.xx
s=XenonEncoderLivePro
c=IN IP4 172.16.154.88
t=0 0
m=video 4060 RTP/AVP 105
b=AS:128
a=Width:integer;320
a=Height:integer;240
a=cliprect:0,0,240,320
a=rtpmap:105 H264/90000
a=fmtp:105 profile-level-id=42E00C; sprop-parameter-sets=Z0LgDJZUCg/I,aM4BrFCA; packetization-mode=1
a=mpeg4-esid:11
m=audio 4062 RTP/AVP 110
b=AS:8
a=rtpmap:110 MP4A-LATM/16000/1
a=mpeg4-esid:12
a=fmtp:110 profile-level-id=15;object=2;cpresent=0;config=40002B103FC0;SBR-enabled=1
================================================================================================
5.1. Protocol Version ("v=")
v=0
The "v=" field gives the version of the Session Description Protocol.
This memo defines version 0. There is no minor version number.
The Session Description Protocol includes an optional bandwidth
attribute with the following syntax:
b=<modifier>:<bandwidth-value>
where <modifier> is a single alphanumeric word giving the meaning of
the bandwidth figure, and where the default units for <bandwidth-
value> are kilobits per second. This attribute specifies the
proposed bandwidth to be used by the session or media.
A typical use is with the modifier "AS" (for Application Specific
Maximum) which may be used to specify the total bandwidth for a
single media stream from one site (source).
This memo defines two additional bandwidth modifiers:
b=RS:<bandwidth-value>
b=RR:<bandwidth-value>
where "RS" indicates the RTCP bandwidth allocated to active data
senders (as defined by the RTP spec) and "RR" indicates the RTCP
bandwidth allocated to other participants in the RTP session (i.e.,
receivers). The exact behavior induced by specifying these bandwidth
modifiers depends upon the algorithm used to calculate the RTCP
reporting interval. Different algorithms may be specified by
different RTP profiles.