Extract Video Frames from SDP Output

Does anyone know how to extract image frames from a SDP video output? I'm using a Nest battery camera. The wired version gave me an RTSP stream which was easy to extract frames. However, the battery version gave me a SDP output which is hard to make sense of. I've looked at a few posts on stackoverflow but none seemed too promising:

How to use the answerSDP returned from sdm.devices.commands.CameraLiveStream.GenerateWebRtcStream to establish a stream with google nest cam

Executing FFmpeg recording using in-line SDP

Even being able to stream SDP to a mp4 file using ffplay would be a nice start. But ultimately I would like to run a python script to extract frames from SDP output.

I must admit, SDP (session description protocol) seems pretty long and complicated compared to working with RTSP streams. Anyway to simply convert an SDP stream to a RTSP stream?

https://andrewjprokop.wordpress.com/2013/09/30/understanding-session-description-protocol-sdp/

Thanks! Jacob

SDP output looks something like this:

v=0\r\no=- 0 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0 2 1\r\na=msid-semantic: WMS 16733765853514488918/633697675 virtual-6666\r\na=ice-lite\r\nm=audio 19305 UDP/TLS/RTP/SAVPF 111\r\nc=IN IP4 142.250.9.127\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=candidate: 1 udp 2113939711 2607:f8b0:4002:c11::7f 19305 typ host generation 0\r\na=candidate: 1 tcp 2113939710 2607:f8b0:4002:c11::7f 19305 typ host tcptype passive generation 0\r\na=candidate: 1 ssltcp 2113939709 2607:f8b0:4002:c11::7f 443 typ host generation 0\r\na=candidate: 1 udp 2113932031 142.250.9.127 19305 typ host generation 0\r\na=candidate: 1 tcp 2113932030 142.250.9.127 19305 typ host tcptype passive generation 0\r\na=candidate: 1 ssltcp 2113932029 142.250.9.127 443 typ host generation 0\r\na=ice-ufrag:UVDO0GOJASABT95E\r\na=ice-pwd:FRILJDCJZCH+51YNWDGZIN0K\r\na=fingerprint:sha-256 24:53:14:34:59:50:89:52:72:58:04:57:71:BB:C4:89:91:3A:52:EF:C0:5A:A5:EC:B5:51:64:80:AC:13:89:8A\r\na=setup:passive\r\na=mid:0\r\na=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=sendrecv\r\na=msid:virtual-6666 virtual-6666\r\na=rtcp-mux\r\na=rtpmap:111 opus/48000/2\r\na=rtcp-fb:111 transport-cc\r\na=fmtp:111 minptime=10;useinbandfec=1\r\na=ssrc:6666 cname:6666\r\nm=video 9 UDP/TLS/RTP/SAVPF 108 109\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:UVDO0GOJASABT95E\r\na=ice-pwd:FRILJDCJZCH+51YNWDGZIN0K\r\na=fingerprint:sha-256 24:53:14:34:59:50:89:52:72:58:04:57:71:BB:C4:89:91:3A:52:EF:C0:5A:A5:EC:B5:51:64:80:AC:13:89:8A\r\na=setup:passive\r\na=mid:1\r\na=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:13 urn:3gpp:video-orientation\r\na=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=sendrecv\r\na=msid:16733765853514488918/633697675 16733765853514488918/633697675\r\na=rtcp-mux\r\na=rtpmap:108 H264/90000\r\na=rtcp-fb:108 transport-cc\r\na=rtcp-fb:108 ccm fir\r\na=rtcp-fb:108 nack\r\na=rtcp-fb:108 nack pli\r\na=rtcp-fb:108 goog-remb\r\na=fmtp:108 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\na=rtpmap:109 rtx/90000\r\na=fmtp:109 apt=108\r\na=ssrc-group:FID 633697675 3798748564\r\na=ssrc:633697675 cname:633697675\r\na=ssrc:3798748564 cname:633697675\r\nm=application 9 DTLS/SCTP 5000\r\nc=IN IP4 0.0.0.0\r\na=ice-ufrag:UVDO0GOJASABT95E\r\na=ice-pwd:FRILJDCJZCH+51YNWDGZIN0K\r\na=fingerprint:sha-256 24:53:14:34:59:50:89:52:72:58:04:57:71:BB:C4:89:91:3A:52:EF:C0:5A:A5:EC:B5:51:64:80:AC:13:89:8A\r\na=setup:passive\r\na=mid:2\r\na=sctpmap:5000 webrtc-datachannel 1024\r\n

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