elysium:~/helix/Content/rtpencodersdp# more live.sdp
v=0
o=- 1209833828 1165518277 IN IP4 157.181.178.92
s=Nexcaster_Live
c=IN IP4 239.0.0.1/10
t=0 0
m=video 8048 RTP/AVP 99
b=AS:385
a=rtpmap:99 H263-2000/90000
a=fmtp:99 profile=0; level=45
a=framesize:99 352-288
a=mpeg4-esid:11

Here's mine:
$ cat Content/rtpencodersdp/mcast.sdp 
v=0
o=- 255729276 698616804 IN IP4 172.23.149.235
s=HelixSession
c=IN IP4 239.4.3.2/3
t=0 0
m=video 5058 RTP/AVP 96
b=AS:50
a=rtpmap:96 H263-2000/90000
a=fmtp:96 profile=0; level=20
a=framesize:96 352-288
a=cliprect:0,0,288,352
a=mpeg4-esid:201
a=x-envivio-verid:00035A30