v=0
o=-  16833 0 IN IP4 0.0.0.0
s=-
t=0 0
m=audio 49203 RTP/AVP 109
c=IN IP4 203.0.113.77
a=rtpmap:109 opus/48000
a=ptime:20
a=sendrecv
a=ice-ufrag:c300d85b
a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
a=fingerprint:sha-256 BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2:19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04 
a=rtcp-mux
a=candidate:0 1 UDP 2113667327 198.51.100.7 49203 typ host
a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr 198.51.100.7 rport 49203
m=video 63130 RTP/AVP 120
c=IN IP4 203.0.113.77
a=rtpmap:120 VP8/90000
a=sendrecv
a=ice-ufrag:e39091na
a=ice-pwd:dbc325921d5dd29e4e99147efbabd9a2
a=fingerprint:sha-256 BB:0A:0E:05:E9:26:33:E8:70:88:A2:2F:70:9F:04:19:E2:1C:3B:4B:9F:81:56:2F:70:9F:04:F4:A5:A8:D8 
a=rtcp-mux
a=candidate:0 1 UDP 2113667327 198.51.100.7 63130 typ host
a=candidate:1 1 UDP 1694302207 203.0.113.77 63130 typ srflx raddr 198.51.100.7 rport 63130
a=rtcp-fb:120 nack pli
a=rtcp-fb:120 ccm fir