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SDP munging
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| 一份 munging 风格 simulcast 的 sdp | |
| offer: | |
| ``` | |
| v=0 | |
| o=- 8477070938705963049 2 IN IP4 127.0.0.1 | |
| s=- | |
| t=0 0 | |
| a=group:BUNDLE 0 1 | |
| a=extmap-allow-mixed | |
| a=msid-semantic: WMS ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob | |
| m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126 | |
| c=IN IP4 0.0.0.0 | |
| a=rtcp:9 IN IP4 0.0.0.0 | |
| a=ice-ufrag:FYWo | |
| a=ice-pwd:w16id/Ao74bZrC0Dgff/8uLG | |
| a=ice-options:trickle | |
| a=fingerprint:sha-256 F9:F3:BB:93:B6:C9:F1:29:8D:15:C1:1D:65:37:E4:D1:42:97:59:40:15:61:58:BB:99:13:72:E5:28:32:5A:80 | |
| a=setup:actpass | |
| a=mid:0 | |
| a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level | |
| a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time | |
| a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01 | |
| a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid | |
| a=extmap:5 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id | |
| a=extmap:6 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id | |
| a=sendrecv | |
| a=msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob dce55f71-a511-4008-8d73-c4a72efc1958 | |
| a=rtcp-mux | |
| a=rtpmap:111 opus/48000/2 | |
| a=rtcp-fb:111 transport-cc | |
| a=fmtp:111 minptime=10;useinbandfec=1 | |
| a=rtpmap:103 ISAC/16000 | |
| a=rtpmap:104 ISAC/32000 | |
| a=rtpmap:9 G722/8000 | |
| a=rtpmap:0 PCMU/8000 | |
| a=rtpmap:8 PCMA/8000 | |
| a=rtpmap:106 CN/32000 | |
| a=rtpmap:105 CN/16000 | |
| a=rtpmap:13 CN/8000 | |
| a=rtpmap:110 telephone-event/48000 | |
| a=rtpmap:112 telephone-event/32000 | |
| a=rtpmap:113 telephone-event/16000 | |
| a=rtpmap:126 telephone-event/8000 | |
| a=ssrc:4129794049 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:4129794049 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob dce55f71-a511-4008-8d73-c4a72efc1958 | |
| a=ssrc:4129794049 mslabel:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob | |
| a=ssrc:4129794049 label:dce55f71-a511-4008-8d73-c4a72efc1958 | |
| m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 121 127 120 125 107 108 109 35 36 124 119 123 118 114 115 116 | |
| c=IN IP4 0.0.0.0 | |
| a=rtcp:9 IN IP4 0.0.0.0 | |
| a=ice-ufrag:FYWo | |
| a=ice-pwd:w16id/Ao74bZrC0Dgff/8uLG | |
| a=ice-options:trickle | |
| a=fingerprint:sha-256 F9:F3:BB:93:B6:C9:F1:29:8D:15:C1:1D:65:37:E4:D1:42:97:59:40:15:61:58:BB:99:13:72:E5:28:32:5A:80 | |
| a=setup:actpass | |
| a=mid:1 | |
| a=extmap:14 urn:ietf:params:rtp-hdrext:toffset | |
| a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time | |
| a=extmap:13 urn:3gpp:video-orientation | |
| a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01 | |
| a=extmap:12 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay | |
| a=extmap:11 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type | |
| a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing | |
| a=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-space | |
| a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid | |
| a=extmap:5 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id | |
| a=extmap:6 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id | |
| a=sendrecv | |
| a=msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=rtcp-mux | |
| a=rtcp-rsize | |
| a=rtpmap:96 VP8/90000 | |
| a=rtcp-fb:96 goog-remb | |
| a=rtcp-fb:96 transport-cc | |
| a=rtcp-fb:96 ccm fir | |
| a=rtcp-fb:96 nack | |
| a=rtcp-fb:96 nack pli | |
| a=rtpmap:97 rtx/90000 | |
| a=fmtp:97 apt=96 | |
| a=rtpmap:98 VP9/90000 | |
| a=rtcp-fb:98 goog-remb | |
| a=rtcp-fb:98 transport-cc | |
| a=rtcp-fb:98 ccm fir | |
| a=rtcp-fb:98 nack | |
| a=rtcp-fb:98 nack pli | |
| a=fmtp:98 profile-id=0 | |
| a=rtpmap:99 rtx/90000 | |
| a=fmtp:99 apt=98 | |
| a=rtpmap:100 VP9/90000 | |
| a=rtcp-fb:100 goog-remb | |
| a=rtcp-fb:100 transport-cc | |
| a=rtcp-fb:100 ccm fir | |
| a=rtcp-fb:100 nack | |
| a=rtcp-fb:100 nack pli | |
| a=fmtp:100 profile-id=2 | |
| a=rtpmap:101 rtx/90000 | |
| a=fmtp:101 apt=100 | |
| a=rtpmap:102 H264/90000 | |
| a=rtcp-fb:102 goog-remb | |
| a=rtcp-fb:102 transport-cc | |
| a=rtcp-fb:102 ccm fir | |
| a=rtcp-fb:102 nack | |
| a=rtcp-fb:102 nack pli | |
| a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f | |
| a=rtpmap:121 rtx/90000 | |
| a=fmtp:121 apt=102 | |
| a=rtpmap:127 H264/90000 | |
| a=rtcp-fb:127 goog-remb | |
| a=rtcp-fb:127 transport-cc | |
| a=rtcp-fb:127 ccm fir | |
| a=rtcp-fb:127 nack | |
| a=rtcp-fb:127 nack pli | |
| a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f | |
| a=rtpmap:120 rtx/90000 | |
| a=fmtp:120 apt=127 | |
| a=rtpmap:125 H264/90000 | |
| a=rtcp-fb:125 goog-remb | |
| a=rtcp-fb:125 transport-cc | |
| a=rtcp-fb:125 ccm fir | |
| a=rtcp-fb:125 nack | |
| a=rtcp-fb:125 nack pli | |
| a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f | |
| a=rtpmap:107 rtx/90000 | |
| a=fmtp:107 apt=125 | |
| a=rtpmap:108 H264/90000 | |
| a=rtcp-fb:108 goog-remb | |
| a=rtcp-fb:108 transport-cc | |
| a=rtcp-fb:108 ccm fir | |
| a=rtcp-fb:108 nack | |
| a=rtcp-fb:108 nack pli | |
| a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f | |
| a=rtpmap:109 rtx/90000 | |
| a=fmtp:109 apt=108 | |
| a=rtpmap:35 AV1X/90000 | |
| a=rtcp-fb:35 goog-remb | |
| a=rtcp-fb:35 transport-cc | |
| a=rtcp-fb:35 ccm fir | |
| a=rtcp-fb:35 nack | |
| a=rtcp-fb:35 nack pli | |
| a=rtpmap:36 rtx/90000 | |
| a=fmtp:36 apt=35 | |
| a=rtpmap:124 H264/90000 | |
| a=rtcp-fb:124 goog-remb | |
| a=rtcp-fb:124 transport-cc | |
| a=rtcp-fb:124 ccm fir | |
| a=rtcp-fb:124 nack | |
| a=rtcp-fb:124 nack pli | |
| a=fmtp:124 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d0032 | |
| a=rtpmap:119 rtx/90000 | |
| a=fmtp:119 apt=124 | |
| a=rtpmap:123 H264/90000 | |
| a=rtcp-fb:123 goog-remb | |
| a=rtcp-fb:123 transport-cc | |
| a=rtcp-fb:123 ccm fir | |
| a=rtcp-fb:123 nack | |
| a=rtcp-fb:123 nack pli | |
| a=fmtp:123 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=640032 | |
| a=rtpmap:118 rtx/90000 | |
| a=fmtp:118 apt=123 | |
| a=rtpmap:114 red/90000 | |
| a=rtpmap:115 rtx/90000 | |
| a=fmtp:115 apt=114 | |
| a=rtpmap:116 ulpfec/90000 | |
| a=ssrc-group:FID 1390104252 2798384649 | |
| a=ssrc:1390104252 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:1390104252 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=ssrc:2798384649 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:2798384649 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=ssrc-group:FID 1390104253 2798384650 | |
| a=ssrc:1390104253 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:1390104253 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=ssrc:2798384650 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:2798384650 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=ssrc-group:FID 1390104254 2798384651 | |
| a=ssrc:1390104254 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:1390104254 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=ssrc:2798384651 cname:rsPDymoMnGBuVXTx | |
| a=ssrc:2798384651 msid:ez0lPBqQZbbAN0ImN4ZrrUCbshr2khvkB6ob 99528680-68d8-418b-afc6-205372e9cb6f | |
| a=ssrc-group:SIM 1390104252 1390104253 1390104254 | |
| ``` | |
| answer: | |
| ```v=0 | |
| o=SRS/5.0.8(Leo) 140207101952000 2 IN IP4 0.0.0.0 | |
| s=SRSPublishSession | |
| t=0 0 | |
| a=ice-lite | |
| a=group:BUNDLE 0 1 | |
| a=msid-semantic: WMS live/livestream | |
| m=audio 9 UDP/TLS/RTP/SAVPF 111 | |
| c=IN IP4 0.0.0.0 | |
| a=ice-ufrag:ae171f49 | |
| a=ice-pwd:4215h7ec7162232nsj9669zj108z277c | |
| a=fingerprint:sha-256 E0:62:24:8C:BB:A1:5B:A4:47:51:15:DD:CA:3F:95:C7:F5:C1:14:34:79:40:16:0C:B7:AE:C0:11:3E:0C:BD:31 | |
| a=setup:passive | |
| a=mid:0 | |
| a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time | |
| a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01 | |
| a=recvonly | |
| a=rtcp-mux | |
| a=rtcp-rsize | |
| a=rtpmap:111 opus/48000/2 | |
| a=rtcp-fb:111 transport-cc | |
| a=fmtp:111 minptime=10;useinbandfec=1 | |
| a=candidate:0 1 udp 2130706431 192.168.250.70 18381 typ host generation 0 | |
| m=video 9 UDP/TLS/RTP/SAVPF 102 114 | |
| c=IN IP4 0.0.0.0 | |
| a=ice-ufrag:ae171f49 | |
| a=ice-pwd:4215h7ec7162232nsj9669zj108z277c | |
| a=fingerprint:sha-256 E0:62:24:8C:BB:A1:5B:A4:47:51:15:DD:CA:3F:95:C7:F5:C1:14:34:79:40:16:0C:B7:AE:C0:11:3E:0C:BD:31 | |
| a=setup:passive | |
| a=mid:1 | |
| a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time | |
| a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01 | |
| a=recvonly | |
| a=rtcp-mux | |
| a=rtcp-rsize | |
| a=rtpmap:102 H264/90000 | |
| a=rtcp-fb:102 goog-remb | |
| a=rtcp-fb:102 transport-cc | |
| a=rtcp-fb:102 nack | |
| a=rtcp-fb:102 nack pli | |
| a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;x-google-min-bitrate=5000;x-google-max-bitrate=8000;profile-level-id=42001f | |
| a=rtpmap:114 red/90000 | |
| a=candidate:0 1 udp 2130706431 192.168.250.70 18381 typ host generation 0 | |
| ``` |
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