v=0
o=- 20518 0 IN IP4 0.0.0.0
s=-
t=0 0
a=ice-ufrag:074c6550
a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
a=rtcp-rsize
m=audio 54732 RTP/AVP 109
c=IN IP4 203.0.113.141
a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04:BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2 
a=rtpmap:109 opus/48000
a=ptime:20
a=sendrecv
a=rtcp-mux
a=rtcp:64678 IN IP4 203.0.113.141
a=candidate:0 1 UDP 2113667327 192.0.2.4 54732 typ host
a=candidate:1 1 UDP 694302207 203.0.113.141 54732 typ srflx raddr 192.0.2.4 rport 54732
a=candidate:0 2 UDP 2113667326 192.0.2.4 64678 typ host
a=candidate:1 2 UDP 1694302206 203.0.113.141 64678 typ srflx raddr 192.0.2.4 rport 64678
m=video 62445 RTP/AVP 120
c=IN IP4 203.0.113.141
a=fingerprint:sha-256 DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08:6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35 
a=rtpmap:120 VP8/90000
a=sendrecv
a=rtcp-mux
a=rtcp:54721 IN IP4 203.0.113.141
a=candidate:0 1 UDP 2113667327 192.0.2.4 62445 typ host
a=candidate:1 1 UDP 1694302207 203.0.113.141 62537 typ srflx raddr 192.0.2.4 rport 62445
a=candidate:0 2 UDP 2113667326 192.0.2.4 54721 typ host
a=candidate:1 2 UDP 1694302206 203.0.113.141 54721 typ srflx raddr 192.0.2.4 rport 54721
a=rtcp-fb:120 nack pli
a=rtcp-fb:120 ccm fir