MediaMTX + Raspberry Pi Camera Module + go2rtc = 🤕

[rlue]

Question

I ran into an issue trying to set up mediamtx on a Raspberry Pi 3B+ with a Camera Module 3 to serve an RTSP stream to feed to an instance of go2rtc (via Frigate) hosted on another server (on the same LAN).

What Works

Frigate reading mediamtx's RTSP stream directly; i.e., with the following config:

cameras:
  dogcam:
    ffmpeg:
      inputs:
        - path: rtsp://$MEDIAMTX_SERVER_IP:8554/rpi
          roles:
            - detect
            - record
    record:
      enabled: true

Reading the mediamtx RTSP stream with ffplay (though with ~8s startup latency)

$ ffplay rtsp://$MEDIAMTX_SERVER_IP:8554/rpi
  ffplay version 7.1.1 Copyright (c) 2003-2025 the FFmpeg developers
  built with Apple clang version 17.0.0 (clang-1700.0.13.3)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.1.1_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
  libavutil      59. 39.100 / 59. 39.100
  libavcodec     61. 19.101 / 61. 19.101
  libavformat    61.  7.100 / 61.  7.100
  libavdevice    61.  3.100 / 61.  3.100
  libavfilter    10.  4.100 / 10.  4.100
  libswscale      8.  3.100 /  8.  3.100
  libswresample   5.  3.100 /  5.  3.100
  libpostproc    58.  3.100 / 58.  3.100
Input #0, rtsp, from 'rtsp://192.168.2.15:8554/rpi':q=    0B
  Metadata:
    title           :
  Duration: N/A, start: 0.130211, bitrate: N/A
  Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080, 15 fps, 15 tbr, 90k tbn
[swscaler @ 0x1287d8000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x128de8000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x1293f8000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x129a08000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12a018000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12a628000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12ac38000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12b248000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12b858000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12be68000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12c478000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12ca88000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12d098000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12d6a8000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12dcb8000] No accelerated colorspace conversion found from yuv420p to bgr24.
[swscaler @ 0x12e2c8000] No accelerated colorspace conversion found from yuv420p to bgr24.
   1.57 M-V:  0.001 fd=   0 aq=    0KB vq=  186KB sq=    0B B sq=    0B

Re-streaming RTSP streams from another IP camera in go2rtc. (The only other IP camera I have to test is an Android phone running the IP Webcam app.)

$ ./go2rtc -c go2rtc.yaml
11:35:47.016 INF go2rtc platform=darwin/arm64 revision=fa580c5 version=1.9.9
11:35:47.016 DBG build vcs.time=2025-03-10T02:51:40Z version=go1.24.1
11:35:47.016 INF config path=/Users/rlue/Downloads/go2rtc.yaml
11:35:47.016 TRC [api] register path path=/
11:35:47.016 TRC [api] register path path=/api
11:35:47.016 TRC [api] register path path=/api/config
11:35:47.016 TRC [api] register path path=/api/exit
11:35:47.016 TRC [api] register path path=/api/restart
11:35:47.016 TRC [api] register path path=/api/log
11:35:47.016 TRC [api] register path path=/api/ws
11:35:47.017 TRC [api] register path path=/api/streams
11:35:47.017 TRC [api] register path path=/api/streams.dot
11:35:47.017 INF [api] listen addr=:1984
11:35:47.018 INF [rtsp] listen addr=:8554
11:35:47.020 INF [webrtc] listen addr=:8555
11:35:47.021 TRC [api] register path path=/api/webrtc
11:35:47.022 TRC [api] register path path=/api/frame.mp4
11:35:47.022 TRC [api] register path path=/api/stream.mp4
11:35:47.022 TRC [api] register path path=/api/stream.m3u8
11:35:47.022 TRC [api] register path path=/api/hls/playlist.m3u8
11:35:47.022 TRC [api] register path path=/api/hls/segment.ts
11:35:47.022 TRC [api] register path path=/api/hls/init.mp4
11:35:47.022 TRC [api] register path path=/api/hls/segment.m4s
11:35:47.022 TRC [api] register path path=/api/frame.jpeg
11:35:47.022 TRC [api] register path path=/api/stream.mjpeg
11:35:47.022 TRC [api] register path path=/api/stream.ascii
11:35:47.022 TRC [api] register path path=/api/stream.y4m
11:35:47.022 TRC [api] register path path=/static
11:35:47.022 TRC [api] register path path=/streams
11:35:47.022 TRC [api] register path path=/stream/
11:35:47.022 TRC [hass] can't import config: open /homeassistant/.storage/core.config_entries: no such file or directory
11:35:47.022 TRC [api] register path path=/api/hass
11:35:47.022 TRC [api] register path path=/onvif/
11:35:47.022 TRC [api] register path path=/api/onvif
11:35:47.022 TRC [api] register path path=/api/webtorrent
11:35:47.023 TRC [api] register path path=/api/stream.flv
11:35:47.023 TRC [api] register path path=/api/ffmpeg
11:35:47.023 TRC [api] register path path=/api/ffmpeg/devices
11:35:47.023 TRC [api] register path path=/api/ffmpeg/hardware
11:35:47.023 TRC [api] register path path=/api/stream
11:35:47.023 TRC [api] register path path=/api/dvrip
11:35:47.023 TRC [api] register path path=/api/stream.ts
11:35:47.023 TRC [api] register path path=/api/stream.aac
11:35:47.023 TRC [api] register path path=/api/roborock
11:35:47.023 TRC [api] register path path=/api/homekit
11:35:47.023 TRC [api] register path path=/api/ring
11:35:47.023 TRC [api] register path path=/api/nest
11:35:47.023 TRC [api] register path path=/api/gopro
11:35:47.023 TRC [api] register path path=/api/stack
11:35:57.414 TRC [api] GET / 127.0.0.1:58056
11:35:57.439 TRC [api] GET /main.js 127.0.0.1:58056
11:35:57.466 TRC [api] GET /api 127.0.0.1:58056
11:35:57.467 TRC [api] GET /api/streams 127.0.0.1:58058
11:35:58.474 TRC [api] GET /api/streams 127.0.0.1:58056
11:35:59.498 TRC [api] GET /api/streams 127.0.0.1:58056
11:35:59.758 TRC [api] GET /stream.html?src=dogcam 127.0.0.1:58056
11:35:59.775 TRC [api] GET /video-stream.js 127.0.0.1:58056
11:35:59.792 TRC [api] GET /video-rtc.js 127.0.0.1:58056
11:35:59.807 TRC [api] GET /api/ws?src=dogcam 127.0.0.1:58059
11:35:59.816 TRC [api] ws msg type=mse
11:35:59.816 TRC [mp4] new WS/MSE consumer codecs=avc1.640029,avc1.64002A,avc1.640033,hvc1.1.6.L153.B0,mp4a.40.2,mp4a.40.5,flac,opus
11:35:59.816 TRC [streams] check cons=0 media=video, sendonly, H264, H265
11:35:59.818 TRC [api] ws msg type=webrtc/offer
11:35:59.818 DBG [webrtc] new consumer src=dogcam
11:35:59.818 TRC [webrtc] offer:
v=0
o=mozilla...THIS_IS_SDPARTA-99.0 8828723049628089756 0 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 D9:6B:68:5B:AD:DE:78:FA:4C:57:33:54:CE:85:44:56:42:18:01:49:6C:D4:99:3A:29:4C:9E:E3:05:F0:0E:00
a=group:BUNDLE 0 1
a=ice-options:trickle
a=msid-semantic:WMS *
m=video 9 UDP/TLS/RTP/SAVPF 120 124 121 125 126 127 97 98 105 106 103 104 99 100 123 122 119
c=IN IP4 0.0.0.0
a=recvonly
a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap:4 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
a=extmap:5 urn:ietf:params:rtp-hdrext:toffset
a=extmap:6/recvonly http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
a=extmap:7 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
a=extmap-allow-mixed
a=fmtp:126 profile-level-id=42e01f;level-asymmetry-allowed=1;packetization-mode=1
a=fmtp:97 profile-level-id=42e01f;level-asymmetry-allowed=1
a=fmtp:105 profile-level-id=42001f;level-asymmetry-allowed=1;packetization-mode=1
a=fmtp:103 profile-level-id=42001f;level-asymmetry-allowed=1
a=fmtp:120 max-fs=12288;max-fr=60
a=fmtp:124 apt=120
a=fmtp:121 max-fs=12288;max-fr=60
a=fmtp:125 apt=121
a=fmtp:127 apt=126
a=fmtp:98 apt=97
a=fmtp:106 apt=105
a=fmtp:104 apt=103
a=fmtp:100 apt=99
a=fmtp:119 apt=122
a=ice-pwd:927b5ce4da2c332e818b7382c1322665
a=ice-ufrag:93396a30
a=mid:0
a=rtcp-fb:120 nack
a=rtcp-fb:120 nack pli
a=rtcp-fb:120 ccm fir
a=rtcp-fb:120 goog-remb
a=rtcp-fb:120 transport-cc
a=rtcp-fb:121 nack
a=rtcp-fb:121 nack pli
a=rtcp-fb:121 ccm fir
a=rtcp-fb:121 goog-remb
a=rtcp-fb:121 transport-cc
a=rtcp-fb:126 nack
a=rtcp-fb:126 nack pli
a=rtcp-fb:126 ccm fir
a=rtcp-fb:126 goog-remb
a=rtcp-fb:126 transport-cc
a=rtcp-fb:97 nack
a=rtcp-fb:97 nack pli
a=rtcp-fb:97 ccm fir
a=rtcp-fb:97 goog-remb
a=rtcp-fb:97 transport-cc
a=rtcp-fb:105 nack
a=rtcp-fb:105 nack pli
a=rtcp-fb:105 ccm fir
a=rtcp-fb:105 goog-remb
a=rtcp-fb:105 transport-cc
a=rtcp-fb:103 nack
a=rtcp-fb:103 nack pli
a=rtcp-fb:103 ccm fir
a=rtcp-fb:103 goog-remb
a=rtcp-fb:103 transport-cc
a=rtcp-fb:99 nack
a=rtcp-fb:99 nack pli
a=rtcp-fb:99 ccm fir
a=rtcp-fb:99 goog-remb
a=rtcp-fb:99 transport-cc
a=rtcp-fb:123 nack
a=rtcp-fb:123 nack pli
a=rtcp-fb:123 ccm fir
a=rtcp-fb:123 goog-remb
a=rtcp-fb:123 transport-cc
a=rtcp-fb:122 nack
a=rtcp-fb:122 nack pli
a=rtcp-fb:122 ccm fir
a=rtcp-fb:122 goog-remb
a=rtcp-fb:122 transport-cc
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:120 VP8/90000
a=rtpmap:124 rtx/90000
a=rtpmap:121 VP9/90000
a=rtpmap:125 rtx/90000
a=rtpmap:126 H264/90000
a=rtpmap:127 rtx/90000
a=rtpmap:97 H264/90000
a=rtpmap:98 rtx/90000
a=rtpmap:105 H264/90000
a=rtpmap:106 rtx/90000
a=rtpmap:103 H264/90000
a=rtpmap:104 rtx/90000
a=rtpmap:99 AV1/90000
a=rtpmap:100 rtx/90000
a=rtpmap:123 ulpfec/90000
a=rtpmap:122 red/90000
a=rtpmap:119 rtx/90000
a=setup:actpass
a=ssrc:720169536 cname:{dc844c2e-a946-4a28-a283-3560585300c6}
m=audio 0 UDP/TLS/RTP/SAVPF 109 9 0 8 101
c=IN IP4 0.0.0.0
a=bundle-only
a=recvonly
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=extmap:2/recvonly urn:ietf:params:rtp-hdrext:csrc-audio-level
a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap-allow-mixed
a=fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=fmtp:101 0-15
a=ice-pwd:927b5ce4da2c332e818b7382c1322665
a=ice-ufrag:93396a30
a=mid:1
a=rtcp-mux
a=rtpmap:109 opus/48000/2
a=rtpmap:9 G722/8000/1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000/1
a=setup:actpass
a=ssrc:3137113386 cname:{dc844c2e-a946-4a28-a283-3560585300c6}

11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [webrtc] remote candidate="candidate:0 2 UDP 2122187006 234a7255-e292-466d-a48d-32063db90515.local 57385 typ host"
11:35:59.819 TRC [webrtc] remote candidate="candidate:0 1 UDP 2122187007 234a7255-e292-466d-a48d-32063db90515.local 62887 typ host"
11:35:59.819 TRC [webrtc] remote candidate="candidate:2 1 UDP 2122252543 695be2dd-709d-45bc-8509-76c426e363b9.local 54848 typ host"
11:35:59.819 TRC [streams] check cons=1 media=video, sendonly, VP8, VP9, H264, AV1
11:35:59.819 TRC [webrtc] remote candidate="candidate:4 1 TCP 2105458943 234a7255-e292-466d-a48d-32063db90515.local 9 typ host tcptype active"
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [webrtc] remote candidate="candidate:5 1 TCP 2105524479 695be2dd-709d-45bc-8509-76c426e363b9.local 9 typ host tcptype active"
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [api] ws msg type=webrtc/candidate
11:35:59.819 TRC [webrtc] remote candidate="candidate:5 2 TCP 2105524478 695be2dd-709d-45bc-8509-76c426e363b9.local 9 typ host tcptype active"
11:35:59.819 TRC [webrtc] remote candidate="candidate:2 2 UDP 2122252542 695be2dd-709d-45bc-8509-76c426e363b9.local 55078 typ host"
11:35:59.819 TRC [webrtc] remote candidate="candidate:4 2 TCP 2105458942 234a7255-e292-466d-a48d-32063db90515.local 9 typ host tcptype active"
11:35:59.864 TRC [rtsp] client request:
DESCRIBE rtsp://192.168.1.46:8554/h264_ulaw.sdp RTSP/1.0
Require: www.onvif.org/ver20/backchannel
User-Agent: go2rtc/1.9.9
CSeq: 1
Accept: application/sdp


11:35:59.888 TRC [rtsp] client response:
RTSP/1.0 200 OK
Server: IP Webcam Server 0.4
Cseq: 1
Content-Type: application/sdp
Content-Length: 445

v=0
o=- 3067072110274164393 3067072110274164393 IN IP4 127.0.0.1
s=IP Webcam
c=IN IP4 0.0.0.0
t=0 0
a=range:npt=now-
a=control:*
m=video 0 RTP/AVP 96
a=rtpmap:96 H264/90000
a=control:h264
a=fmtp:96 packetization-mode=1;profile-level-id=640028;sprop-parameter-sets=Z2QAKKy0AiAePLykFAgIG0KE1A==,aO4G4sA=;
a=cliprect:0,0,1080,1920
a=framerate:30.0
a=framesize:96 1920-1080
m=audio 0 RTP/AVP 0
a=rtpmap:0 PCMU/8000/1
a=control:ulaw

11:35:59.888 TRC [streams] check cons=0 prod=0 media=video, recvonly, H264
11:35:59.888 TRC [streams] match cons=0 <= prod=0
11:35:59.888 TRC [rtsp] client request:
SETUP rtsp://192.168.1.46:8554/h264_ulaw.sdp/h264 RTSP/1.0
Transport: RTP/AVP/TCP;unicast;interleaved=0-1
CSeq: 2


11:35:59.888 TRC [streams] check cons=1 prod=0 media=video, recvonly, H264
11:35:59.888 TRC [streams] match cons=1 <= prod=0
11:35:59.916 TRC [rtsp] client response:
RTSP/1.0 200 OK
Transport: RTP/AVP/TCP;interleaved=0-1
Session: 274165592769984356
Server: IP Webcam Server 0.4
Cseq: 2


11:35:59.916 TRC [streams] check cons=1 media=audio, sendonly, OPUS/48000/2, G722/8000, PCMU/8000, PCMA/8000, L16, PCML
11:35:59.916 TRC [streams] check cons=1 prod=0 media=video, recvonly, H264
11:35:59.916 TRC [streams] check cons=1 prod=0 media=audio, recvonly, PCMU/8000
11:35:59.916 TRC [streams] match cons=1 <= prod=0
11:35:59.916 TRC [streams] check cons=0 media=audio, sendonly, MPEG4-GENERIC, PCMA, PCMU, L16, PCML, OPUS
11:35:59.916 TRC [rtsp] client request:
SETUP rtsp://192.168.1.46:8554/h264_ulaw.sdp/ulaw RTSP/1.0
Transport: RTP/AVP/TCP;unicast;interleaved=2-3
CSeq: 3
Session: 274165592769984356


11:35:59.924 TRC [api] ws msg type=webrtc/candidate
11:35:59.925 TRC [webrtc] remote candidate="candidate:1 1 UDP 1685987327 8.29.228.89 64938 typ srflx raddr 0.0.0.0 rport 0"
11:35:59.928 TRC [rtsp] client response:
RTSP/1.0 200 OK
Transport: RTP/AVP/TCP;interleaved=2-3
Session: 274165592769984356
Server: IP Webcam Server 0.4
Cseq: 3


11:35:59.928 DBG [streams] start producer url=rtsp://192.168.1.46:8554/h264_ulaw.sdp
11:35:59.928 TRC [streams] check cons=0 prod=0 media=video, recvonly, H264
11:35:59.928 TRC [streams] check cons=0 prod=0 media=audio, recvonly, PCMU/8000
11:35:59.928 TRC [streams] match cons=0 <= prod=0
11:35:59.928 TRC [rtsp] client request:
PLAY rtsp://192.168.1.46:8554/h264_ulaw.sdp RTSP/1.0
CSeq: 4
Session: 274165592769984356


11:35:59.931 TRC [webrtc] answer
v=0
o=- 4113132311350890294 1755714959 IN IP4 0.0.0.0
s=-
t=0 0
a=msid-semantic:WMS*
a=fingerprint:sha-256 0C:F7:AB:95:36:8D:DB:FC:65:66:AF:D2:E4:4A:E5:7F:09:1D:EC:E3:E8:7F:A8:3E:7F:25:09:89:8C:53:8D:E0
a=group:BUNDLE 0 1
m=video 9 UDP/TLS/RTP/SAVPF 126 105
c=IN IP4 0.0.0.0
a=setup:active
a=mid:0
a=ice-ufrag:pvkTfQnJvPVmytAA
a=ice-pwd:ypakoxTPNXfcfpKGNfCxqiIoUSoFJQxE
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:126 H264/90000
a=fmtp:126 profile-level-id=42e01f;level-asymmetry-allowed=1;packetization-mode=1
a=rtcp-fb:126 goog-remb
a=rtcp-fb:126 ccm fir
a=rtcp-fb:126 nack
a=rtcp-fb:126 nack pli
a=rtcp-fb:126 nack
a=rtcp-fb:126 nack pli
a=rtcp-fb:126 transport-cc
a=rtpmap:105 H264/90000
a=fmtp:105 profile-level-id=42001f;level-asymmetry-allowed=1;packetization-mode=1
a=rtcp-fb:105 goog-remb
a=rtcp-fb:105 ccm fir
a=rtcp-fb:105 nack
a=rtcp-fb:105 nack pli
a=rtcp-fb:105 nack
a=rtcp-fb:105 nack pli
a=rtcp-fb:105 transport-cc
a=extmap:7 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
a=ssrc:2901173073 cname:go2rtc
a=ssrc:2901173073 msid:go2rtc go2rtc-video
a=ssrc:2901173073 mslabel:go2rtc
a=ssrc:2901173073 label:go2rtc-video
a=msid:go2rtc go2rtc-video
a=sendonly
m=audio 9 UDP/TLS/RTP/SAVPF 109 0 8
c=IN IP4 0.0.0.0
a=setup:active
a=mid:1
a=ice-ufrag:pvkTfQnJvPVmytAA
a=ice-pwd:ypakoxTPNXfcfpKGNfCxqiIoUSoFJQxE
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:109 opus/48000/2
a=fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=ssrc:74423981 cname:go2rtc
a=ssrc:74423981 msid:go2rtc go2rtc-audio
a=ssrc:74423981 mslabel:go2rtc
a=ssrc:74423981 label:go2rtc-audio
a=msid:go2rtc go2rtc-audio
a=sendonly

11:35:59.932 TRC [webrtc] local  candidate="candidate:391645053 1 udp 2130706431 192.168.1.29 8555 typ host"
11:35:59.932 TRC [webrtc] local  candidate="candidate:960430560 1 udp 2130706431 fdd3:83a8:9834:7235:c47:177b:9301:f294 8555 typ host"
11:35:59.932 TRC [webrtc] local  candidate="candidate:1553528454 1 udp 2130706431 100.96.59.20 8555 typ host"
11:35:59.932 TRC [webrtc] local  candidate="candidate:2677517234 1 udp 2130706431 2606:4700:110:87b2:6855:9870:c55a:95ad 8555 typ host"
11:35:59.932 TRC [webrtc] local  candidate="candidate:3174715258 1 udp 2130706431 fd07:b51a:cc66:0:a617:db5e:ab7:e9f1 8555 typ host"
11:35:59.932 TRC [webrtc] local  candidate="candidate:2863363741 1 tcp 1671430143 192.168.1.29 8555 typ host tcptype passive"
11:35:59.932 TRC [webrtc] local  candidate="candidate:2227990528 1 tcp 1671430143 fdd3:83a8:9834:7235:c47:177b:9301:f294 8555 typ host tcptype passive"
11:35:59.932 TRC [webrtc] local  candidate="candidate:3781920614 1 tcp 1671430143 100.96.59.20 8555 typ host tcptype passive"
11:35:59.932 TRC [webrtc] local  candidate="candidate:577034834 1 tcp 1671430143 2606:4700:110:87b2:6855:9870:c55a:95ad 8555 typ host tcptype passive"
11:35:59.933 TRC [webrtc] local  candidate="candidate:13188762 1 tcp 1671430143 fd07:b51a:cc66:0:a617:db5e:ab7:e9f1 8555 typ host tcptype passive"
11:35:59.941 TRC [rtsp] client response:
RTSP/1.0 200 OK
Cache-Control: no-cache
Server: IP Webcam Server 0.4
Cseq: 4
Transport: RTP/AVP/TCP;interleaved=0-1
Session: 274165592769984356;timeout=60
Range: npt=now-


11:35:59.954 TRC [api] ws msg type=webrtc/candidate
11:35:59.954 TRC [webrtc] remote candidate="candidate:3 1 UDP 1686052607 2a09:bac0:1001:cc2::1bd:fd 23721 typ srflx raddr 0.0.0.0 rport 0"
11:35:59.954 TRC [api] ws msg type=webrtc/candidate
11:35:59.954 TRC [webrtc] remote candidate="candidate:1 2 UDP 1685987326 8.29.228.89 64883 typ srflx raddr 0.0.0.0 rport 0"
11:35:59.973 TRC [api] ws msg type=webrtc/candidate
11:35:59.973 TRC [api] ws msg type=webrtc/candidate
11:35:59.973 TRC [webrtc] remote candidate=
11:35:59.973 TRC [webrtc] remote candidate="candidate:3 2 UDP 1686052606 2a09:bac0:1001:cc2::1bd:fd 53072 typ srflx raddr 0.0.0.0 rport 0"
11:35:59.973 TRC [api] ws msg type=webrtc/candidate
11:35:59.973 TRC [webrtc] remote candidate=
11:36:00.031 TRC [webrtc] local  candidate="candidate:2580833679 1 udp 1694498815 2a09:bac0:1001:cc2::1bd:fd 42703 typ srflx raddr :: rport 61239"
11:36:00.084 TRC [webrtc] config candidate="candidate:4267385607 1 tcp 1671430142 2a09:bac0:1001:cc2::1bd:fd 8555 typ host tcptype passive"
11:36:00.084 TRC [webrtc] config candidate="candidate:1135104743 1 udp 2130706429 2a09:bac0:1001:cc2::1bd:fd 8555 typ host"
11:36:00.127 TRC [webrtc] local  candidate="candidate:60992564 1 udp 1694498815 8.29.228.89 64928 typ srflx raddr 0.0.0.0 rport 49496"
11:36:06.758 TRC github.com/AlexxIT/go2rtc/internal/api/ws/ws.go:124 > error="websocket: close 1001 (going away)"

What Doesn't Work

Reading the mediamtx RTSP stream in go2rtc. I first encountered this issue from the embedded go2rtc process inside the Frigate container, but am seeing the same results with go2rtc running on my development machine.

mediamtx YAML config

# Global settings ==============================================================
# General ----------------------------------------------------------------------
logLevel: warn            # ["error", "warn", "info", "debug"]
logDestinations: [stdout] # ["stdout", "file" and "syslog"]
logFile: mediamtx.log     # Only applicable when logDestinations == "file"

readTimeout: 5s
writeTimeout: 5s
# Size of the queue of outgoing packets.
# A higher value allows to increase throughput, a lower value allows to save RAM.
writeQueueSize: 1024
# Maximum size of outgoing UDP packets.
# This can be decreased to avoid fragmentation on networks with a low UDP MTU.
udpMaxPayloadSize: 1472

# Command to run when a client connects to the server.
# This is terminated with SIGINT when a client disconnects from the server.
# The following environment variables are available:
# * MTX_CONN_TYPE: connection type
# * MTX_CONN_ID: connection ID
# * RTSP_PORT: RTSP server port
runOnConnect:
# Restart the command if it exits.
runOnConnectRestart: no
# Command to run when a client disconnects from the server.
# Environment variables are the same of runOnConnect.
runOnDisconnect:

# Authentication ---------------------------------------------------------------
# One of:
#   * internal: stored in this file
#   * http: an external HTTP URL is contacted to perform authentication
#   * jwt: an external identity server provides authentication through JWTs
authMethod: internal

# Internal authentication.
# list of users.
authInternalUsers:
  # Default unprivileged user.
  # Username. 'any' means any user, including anonymous ones.
- user: any
  # Password. Not used in case of 'any' user.
  pass:
  # IPs or networks allowed to use this user. An empty list means any IP.
  ips: []
  # List of permissions.
  permissions:
    # Available actions are: publish, read, playback, api, metrics, pprof.
  - action: publish
    # Paths can be set to further restrict access to a specific path.
    # An empty path means any path.
    # Regular expressions can be used by using a tilde as prefix.
    path:
  - action: read
    path:
  - action: playback
    path:

  # Default administrator.
  # This allows to use API, metrics and PPROF without authentication,
  # if the IP is localhost.
- user: any
  pass:
  ips: ['127.0.0.1', '::1']
  permissions:
  - action: api
  - action: metrics
  - action: pprof

# HTTP-based authentication.
# URL called to perform authentication. Every time a user wants
# to authenticate, the server calls this URL with the POST method
# and a body containing:
# {
#   "user": "user",
#   "password": "password",
#   "ip": "ip",
#   "action": "publish|read|playback|api|metrics|pprof",
#   "path": "path",
#   "protocol": "rtsp|rtmp|hls|webrtc|srt",
#   "id": "id",
#   "query": "query"
# }
# If the response code is 20x, authentication is accepted, otherwise
# it is discarded.
authHTTPAddress:
# Actions to exclude from HTTP-based authentication.
# Format is the same as the one of user permissions.
authHTTPExclude:
- action: api
- action: metrics
- action: pprof

# JWT-based authentication.
# Users have to login through an external identity server and obtain a JWT.
# This JWT must contain the claim "mediamtx_permissions" with permissions,
# for instance:
# {
#  ...
#  "mediamtx_permissions": [
#     {
#       "action": "publish",
#       "path": "somepath"
#     }
#   ]
# }
# Users are expected to pass the JWT in the Authorization header or as a query parameter.
# This is the JWKS URL that will be used to pull (once) the public key that allows
# to validate JWTs.
authJWTJWKS:
# name of the claim that contains permissions.
authJWTClaimKey: mediamtx_permissions

# Control API ------------------------------------------------------------------

# Enable controlling the server through the Control API.
api: yes
# Address of the Control API listener.
apiAddress: :9997
# Enable TLS/HTTPS on the Control API server.
apiEncryption: no
# Path to the server key. This is needed only when encryption is yes.
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
apiServerKey: server.key
# Path to the server certificate.
apiServerCert: server.crt
# Value of the Access-Control-Allow-Origin header provided in every HTTP response.
apiAllowOrigin: '*'
# List of IPs or CIDRs of proxies placed before the HTTP server.
# If the server receives a request from one of these entries, IP in logs
# will be taken from the X-Forwarded-For header.
apiTrustedProxies: []

# Metrics ----------------------------------------------------------------------

# Enable Prometheus-compatible metrics.
metrics: no
# Address of the metrics HTTP listener.
metricsAddress: :9998
# Enable TLS/HTTPS on the Metrics server.
metricsEncryption: no
# Path to the server key. This is needed only when encryption is yes.
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
metricsServerKey: server.key
# Path to the server certificate.
metricsServerCert: server.crt
# Value of the Access-Control-Allow-Origin header provided in every HTTP response.
metricsAllowOrigin: '*'
# List of IPs or CIDRs of proxies placed before the HTTP server.
# If the server receives a request from one of these entries, IP in logs
# will be taken from the X-Forwarded-For header.
metricsTrustedProxies: []

# PPROF ------------------------------------------------------------------------

# Enable pprof-compatible endpoint to monitor performances.
pprof: no
# Address of the pprof listener.
pprofAddress: :9999
# Enable TLS/HTTPS on the pprof server.
pprofEncryption: no
# Path to the server key. This is needed only when encryption is yes.
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
pprofServerKey: server.key
# Path to the server certificate.
pprofServerCert: server.crt
# Value of the Access-Control-Allow-Origin header provided in every HTTP response.
pprofAllowOrigin: '*'
# List of IPs or CIDRs of proxies placed before the HTTP server.
# If the server receives a request from one of these entries, IP in logs
# will be taken from the X-Forwarded-For header.
pprofTrustedProxies: []

# Playback Server --------------------------------------------------------------

# Enable downloading recordings from the playback server.
playback: no
# Address of the playback server listener.
playbackAddress: :9996
# Enable TLS/HTTPS on the playback server.
playbackEncryption: no
# Path to the server key. This is needed only when encryption is yes.
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
playbackServerKey: server.key
# Path to the server certificate.
playbackServerCert: server.crt
# Value of the Access-Control-Allow-Origin header provided in every HTTP response.
playbackAllowOrigin: '*'
# List of IPs or CIDRs of proxies placed before the HTTP server.
# If the server receives a request from one of these entries, IP in logs
# will be taken from the X-Forwarded-For header.
playbackTrustedProxies: []

# RTSP Server ------------------------------------------------------------------

# Enable publishing and reading streams with the RTSP protocol.
rtsp: yes
# List of enabled RTSP transport protocols.
# UDP is the most performant, but doesn't work when there's a NAT/firewall between
# server and clients, and doesn't support encryption.
# UDP-multicast allows to save bandwidth when clients are all in the same LAN.
# TCP is the most versatile, and does support encryption.
# The handshake is always performed with TCP.
rtspTransports: [udp, multicast, tcp]
# Encrypt handshakes and TCP streams with TLS (RTSPS).
# Available values are "no", "strict", "optional".
rtspEncryption: "no"
# Address of the TCP/RTSP listener. This is needed only when encryption is "no" or "optional".
rtspAddress: :8554
# Address of the TCP/TLS/RTSPS listener. This is needed only when encryption is "strict" or "optional".
rtspsAddress: :8322
# Address of the UDP/RTP listener. This is needed only when "udp" is in rtspTransports.
rtpAddress: :8000
# Address of the UDP/RTCP listener. This is needed only when "udp" is in rtspTransports.
rtcpAddress: :8001
# IP range of all UDP-multicast listeners. This is needed only when "multicast" is in rtspTransports.
multicastIPRange: 224.1.0.0/16
# Port of all UDP-multicast/RTP listeners. This is needed only when "multicast" is in rtspTransports.
multicastRTPPort: 8002
# Port of all UDP-multicast/RTCP listeners. This is needed only when "multicast" is in rtspTransports.
multicastRTCPPort: 8003
# Path to the server key. This is needed only when encryption is "strict" or "optional".
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
rtspServerKey: server.key
# Path to the server certificate. This is needed only when encryption is "strict" or "optional".
rtspServerCert: server.crt
# Authentication methods. Available are "basic" and "digest".
# "digest" doesn't provide any additional security and is available for compatibility only.
rtspAuthMethods: [basic]

# RTMP Server ------------------------------------------------------------------

# Enable publishing and reading streams with the RTMP protocol.
rtmp: no
# Address of the RTMP listener. This is needed only when encryption is "no" or "optional".
rtmpAddress: :1935
# Encrypt connections with TLS (RTMPS).
# Available values are "no", "strict", "optional".
rtmpEncryption: "no"
# Address of the RTMPS listener. This is needed only when encryption is "strict" or "optional".
rtmpsAddress: :1936
# Path to the server key. This is needed only when encryption is "strict" or "optional".
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
rtmpServerKey: server.key
# Path to the server certificate. This is needed only when encryption is "strict" or "optional".
rtmpServerCert: server.crt

# HLS Server -------------------------------------------------------------------

# Enable reading streams with the HLS protocol.
hls: no
# Address of the HLS listener.
hlsAddress: :8888
# Enable TLS/HTTPS on the HLS server.
# This is required for Low-Latency HLS.
hlsEncryption: no
# Path to the server key. This is needed only when encryption is yes.
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
hlsServerKey: server.key
# Path to the server certificate.
hlsServerCert: server.crt
# Value of the Access-Control-Allow-Origin header provided in every HTTP response.
# This allows to play the HLS stream from an external website.
hlsAllowOrigin: '*'
# List of IPs or CIDRs of proxies placed before the HLS server.
# If the server receives a request from one of these entries, IP in logs
# will be taken from the X-Forwarded-For header.
hlsTrustedProxies: []
# By default, HLS is generated only when requested by a user.
# This option allows to generate it always, avoiding the delay between request and generation.
hlsAlwaysRemux: no
# Variant of the HLS protocol to use. Available options are:
# * mpegts - uses MPEG-TS segments, for maximum compatibility.
# * fmp4 - uses fragmented MP4 segments, more efficient.
# * lowLatency - uses Low-Latency HLS.
hlsVariant: lowLatency
# Number of HLS segments to keep on the server.
# Segments allow to seek through the stream.
# Their number doesn't influence latency.
hlsSegmentCount: 7
# Minimum duration of each segment.
# A player usually puts 3 segments in a buffer before reproducing the stream.
# The final segment duration is also influenced by the interval between IDR frames,
# since the server changes the duration in order to include at least one IDR frame
# in each segment.
hlsSegmentDuration: 1s
# Minimum duration of each part.
# A player usually puts 3 parts in a buffer before reproducing the stream.
# Parts are used in Low-Latency HLS in place of segments.
# Part duration is influenced by the distance between video/audio samples
# and is adjusted in order to produce segments with a similar duration.
hlsPartDuration: 200ms
# Maximum size of each segment.
# This prevents RAM exhaustion.
hlsSegmentMaxSize: 50M
# Directory in which to save segments, instead of keeping them in the RAM.
# This decreases performance, since reading from disk is less performant than
# reading from RAM, but allows to save RAM.
hlsDirectory: ''
# The muxer will be closed when there are no
# reader requests and this amount of time has passed.
hlsMuxerCloseAfter: 60s

# WebRTC Server ----------------------------------------------------------------

# Enable publishing and reading streams with the WebRTC protocol.
webrtc: yes
# Address of the WebRTC HTTP listener.
webrtcAddress: :8889
# Enable TLS/HTTPS on the WebRTC server.
webrtcEncryption: no
# Path to the server key.
# This can be generated with:
# openssl genrsa -out server.key 2048
# openssl req -new -x509 -sha256 -key server.key -out server.crt -days 3650
webrtcServerKey: server.key
# Path to the server certificate.
webrtcServerCert: server.crt
# Value of the Access-Control-Allow-Origin header provided in every HTTP response.
# This allows to play the WebRTC stream from an external website.
webrtcAllowOrigin: '*'
# List of IPs or CIDRs of proxies placed before the WebRTC server.
# If the server receives a request from one of these entries, IP in logs
# will be taken from the X-Forwarded-For header.
webrtcTrustedProxies: []
# Address of a local UDP listener that will receive connections.
# Use a blank string to disable.
webrtcLocalUDPAddress: :8189
# Address of a local TCP listener that will receive connections.
# This is disabled by default since TCP is less efficient than UDP and
# introduces a progressive delay when network is congested.
webrtcLocalTCPAddress: ''
# WebRTC clients need to know the IP of the server.
# Gather IPs from interfaces and send them to clients.
webrtcIPsFromInterfaces: yes
# List of interfaces whose IPs will be sent to clients.
# An empty value means to use all available interfaces.
webrtcIPsFromInterfacesList: []
# List of additional hosts or IPs to send to clients.
webrtcAdditionalHosts: []
# ICE servers. Needed only when local listeners can't be reached by clients.
# STUN servers allows to obtain and share the public IP of the server.
# TURN/TURNS servers forces all traffic through them.
webrtcICEServers2: []
  # - url: stun:stun.l.google.com:19302
  # if user is "AUTH_SECRET", then authentication is secret based.
  # the secret must be inserted into the password field.
  # username: ''
  # password: ''
  # clientOnly: false
# Time to wait for the WebRTC handshake to complete.
webrtcHandshakeTimeout: 10s
# Maximum time to gather video tracks.
webrtcTrackGatherTimeout: 2s
# The maximum time to gather STUN candidates.
webrtcSTUNGatherTimeout: 5s

# SRT Server -------------------------------------------------------------------

# Enable publishing and reading streams with the SRT protocol.
srt: no
# Address of the SRT listener.
srtAddress: :8890

# Default Path settings ========================================================

# Settings in "pathDefaults" are applied anywhere,
# unless they are overridden in "paths".
pathDefaults:

  # General --------------------------------------------------------------------

  # Source of the stream. This can be:
  # * publisher -> the stream is provided by a RTSP, RTMP, WebRTC or SRT client
  # * rtsp://existing-url -> the stream is pulled from another RTSP server / camera
  # * rtsps://existing-url -> the stream is pulled from another RTSP server / camera with RTSPS
  # * rtmp://existing-url -> the stream is pulled from another RTMP server / camera
  # * rtmps://existing-url -> the stream is pulled from another RTMP server / camera with RTMPS
  # * http://existing-url/stream.m3u8 -> the stream is pulled from another HLS server / camera
  # * https://existing-url/stream.m3u8 -> the stream is pulled from another HLS server / camera with HTTPS
  # * udp://ip:port -> the stream is pulled with UDP, by listening on the specified IP and port
  # * srt://existing-url -> the stream is pulled from another SRT server / camera
  # * whep://existing-url -> the stream is pulled from another WebRTC server / camera
  # * wheps://existing-url -> the stream is pulled from another WebRTC server / camera with HTTPS
  # * redirect -> the stream is provided by another path or server
  # * rpiCamera -> the stream is provided by a Raspberry Pi Camera
  # The following variables can be used in the source string:
  # * $MTX_QUERY: query parameters (passed by first reader)
  # * $G1, $G2, ...: regular expression groups, if path name is
  #   a regular expression.
  source: publisher
  # If the source is a URL, and the source certificate is self-signed
  # or invalid, you can provide the fingerprint of the certificate in order to
  # validate it anyway. It can be obtained by running:
  # openssl s_client -connect source_ip:source_port </dev/null 2>/dev/null | sed -n '/BEGIN/,/END/p' > server.crt
  # openssl x509 -in server.crt -noout -fingerprint -sha256 | cut -d "=" -f2 | tr -d ':'
  sourceFingerprint:
  # If the source is a URL, it will be pulled only when at least
  # one reader is connected, saving bandwidth.
  sourceOnDemand: no
  # If sourceOnDemand is "yes", readers will be put on hold until the source is
  # ready or until this amount of time has passed.
  sourceOnDemandStartTimeout: 5s
  # If sourceOnDemand is "yes", the source will be closed when there are no
  # readers connected and this amount of time has passed.
  sourceOnDemandCloseAfter: 5s
  # Maximum number of readers. Zero means no limit.
  maxReaders: 5
  # SRT encryption passphrase require to read from this path
  srtReadPassphrase:
  # If the stream is not available, redirect readers to this path.
  # It can be can be a relative path (i.e. /otherstream) or an absolute RTSP URL.
  fallback:

  # Record ---------------------------------------------------------------------

  # Record streams to disk.
  record: no
  # Path of recording segments.
  # Extension is added automatically.
  # Available variables are %path (path name), %Y %m %d %H %M %S %f %s (time in strftime format)
  recordPath: ./recordings/%path/%Y-%m-%d_%H-%M-%S-%f
  # Format of recorded segments.
  # Available formats are "fmp4" (fragmented MP4) and "mpegts" (MPEG-TS).
  recordFormat: fmp4
  # fMP4 segments are concatenation of small MP4 files (parts), each with this duration.
  # MPEG-TS segments are concatenation of 188-bytes packets, flushed to disk with this period.
  # When a system failure occurs, the last part gets lost.
  # Therefore, the part duration is equal to the RPO (recovery point objective).
  recordPartDuration: 1s
  # Minimum duration of each segment.
  recordSegmentDuration: 1h
  # Delete segments after this timespan.
  # Set to 0s to disable automatic deletion.
  recordDeleteAfter: 1d

  # source: "publisher" --------------------------------------------------------

  # Allow another client to disconnect the current publisher and publish in its place.
  overridePublisher: yes
  # SRT encryption passphrase required to publish to this path
  srtPublishPassphrase:

  # source: <RTSP/S URL> -------------------------------------------------------

  # Transport protocol used to pull the stream. available values are "automatic", "udp", "multicast", "tcp".
  rtspTransport: tcp
  # Support sources that don't provide server ports or use random server ports. This is a security issue
  # and must be used only when interacting with sources that require it.
  rtspAnyPort: no
  # Range header to send to the source, in order to start streaming from the specified offset.
  # available values:
  # * clock: Absolute time
  # * npt: Normal Play Time
  # * smpte: SMPTE timestamps relative to the start of the recording
  rtspRangeType:
  # Available values:
  # * clock: UTC ISO 8601 combined date and time string, e.g. 20230812T120000Z
  # * npt: duration such as "300ms", "1.5m" or "2h45m", valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h"
  # * smpte: duration such as "300ms", "1.5m" or "2h45m", valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h"
  rtspRangeStart:

  # source: "redirect" ---------------------------------------------------------

  # RTSP URL which clients will be redirected to.
  sourceRedirect:

  # source: "rpicamera" --------------------------------------------------------
  rpiCameraCamID: 0
  rpiCameraWidth: 1920
  rpiCameraHeight: 1080
  rpiCameraHFlip: true
  rpiCameraVFlip: true
  rpiCameraBrightness: 0      # [-1, 1]
  rpiCameraContrast: 1        # [0, 16]
  rpiCameraSaturation: 1      # [0, 16]
  rpiCameraSharpness: 1       # [0, 16]
  rpiCameraExposure: normal   # [normal, short, long, custom]
  rpiCameraAWB: auto          # [auto, incandescent, tungsten, fluorescent, indoor, daylight, cloudy, custom]
  rpiCameraAWBGains: [0, 0]   # "[red,blue]" fixed gains (can be used in place of rpiCameraAWB)
  rpiCameraDenoise: off       # [off, cdn_off, cdn_fast, cdn_hq]
  rpiCameraShutter: 0         # Fixed shutter speed, in μs.
  rpiCameraMetering: centre   # [centre, spot, matrix, custom]
  rpiCameraGain: 0
  rpiCameraEV: 0              # [-10, 10]
  rpiCameraROI:               # Region of interest, as "x,y,width,height" (all normalized [0, 1])
  rpiCameraHDR: false         # Only applies to Camera Module 3
  rpiCameraTuningFile:
  rpiCameraMode:              # Sensor mode, as "width:height[:bit-depth][:packing]"
  rpiCameraFPS: 15
  rpiCameraAfMode: continuous # [auto, manual, continuous]
  rpiCameraAfRange: normal    # [normal, macro, full]
  rpiCameraAfSpeed: normal    # [normal, fast]
  rpiCameraLensPosition: 0.0  # inverse of MF distance, in meters (0: ∞ / 0.5: 2m / 2: 50cm)
  rpiCameraAfWindow:          # "x,y,width,height" coordinates are given as a proportion of the entire image.
  rpiCameraFlickerPeriod: 0   # for manual flicker correction, in μs.
  rpiCameraTextOverlayEnable: false
  rpiCameraTextOverlay: '%Y-%m-%d %H:%M:%S - MediaMTX'
  rpiCameraCodec: auto        # [auto, hardwareH264, softwareH264]
  rpiCameraIDRPeriod: 60      # period between IDR frames
  rpiCameraBitrate: 5000000
  rpiCameraHardwareH264Profile: main
  rpiCameraHardwareH264Level: '4.1'

  # Hooks ----------------------------------------------------------------------

  # Command to run when this path is initialized.
  # This can be used to publish a stream when the server is launched.
  # This is terminated with SIGINT when the program closes.
  # The following environment variables are available:
  # * MTX_PATH: path name
  # * RTSP_PORT: RTSP server port
  # * G1, G2, ...: regular expression groups, if path name is
  #   a regular expression.
  runOnInit:
  # Restart the command if it exits.
  runOnInitRestart: no

  # Command to run when this path is requested by a reader
  # and no one is publishing to this path yet.
  # This can be used to publish a stream on demand.
  # This is terminated with SIGINT when there are no readers anymore.
  # The following environment variables are available:
  # * MTX_PATH: path name
  # * MTX_QUERY: query parameters (passed by first reader)
  # * RTSP_PORT: RTSP server port
  # * G1, G2, ...: regular expression groups, if path name is
  #   a regular expression.
  runOnDemand:
  # Restart the command if it exits.
  runOnDemandRestart: no
  # Readers will be put on hold until the runOnDemand command starts publishing
  # or until this amount of time has passed.
  runOnDemandStartTimeout: 10s
  # The command will be closed when there are no
  # readers connected and this amount of time has passed.
  runOnDemandCloseAfter: 10s
  # Command to run when there are no readers anymore.
  # Environment variables are the same of runOnDemand.
  runOnUnDemand:

  # Command to run when the stream is ready to be read, whenever it is
  # published by a client or pulled from a server / camera.
  # This is terminated with SIGINT when the stream is not ready anymore.
  # The following environment variables are available:
  # * MTX_PATH: path name
  # * MTX_QUERY: query parameters (passed by publisher)
  # * MTX_SOURCE_TYPE: source type
  # * MTX_SOURCE_ID: source ID
  # * RTSP_PORT: RTSP server port
  # * G1, G2, ...: regular expression groups, if path name is
  #   a regular expression.
  runOnReady:
  # Restart the command if it exits.
  runOnReadyRestart: no
  # Command to run when the stream is not available anymore.
  # Environment variables are the same of runOnReady.
  runOnNotReady:

  # Command to run when a client starts reading.
  # This is terminated with SIGINT when a client stops reading.
  # The following environment variables are available:
  # * MTX_PATH: path name
  # * MTX_QUERY: query parameters (passed by reader)
  # * MTX_READER_TYPE: reader type
  # * MTX_READER_ID: reader ID
  # * RTSP_PORT: RTSP server port
  # * G1, G2, ...: regular expression groups, if path name is
  #   a regular expression.
  runOnRead:
  # Restart the command if it exits.
  runOnReadRestart: no
  # Command to run when a client stops reading.
  # Environment variables are the same of runOnRead.
  runOnUnread:

  # Command to run when a recording segment is created.
  # The following environment variables are available:
  # * MTX_PATH: path name
  # * MTX_SEGMENT_PATH: segment file path
  # * RTSP_PORT: RTSP server port
  # * G1, G2, ...: regular expression groups, if path name is
  #   a regular expression.
  runOnRecordSegmentCreate:

  # Command to run when a recording segment is complete.
  # The following environment variables are available:
  # * MTX_PATH: path name
  # * MTX_SEGMENT_PATH: segment file path
  # * MTX_SEGMENT_DURATION: segment duration
  # * RTSP_PORT: RTSP server port
  # * G1, G2, ...: regular expression groups, if path name is
  #   a regular expression.
  runOnRecordSegmentComplete:

# Per-path settings ============================================================

# Settings in "paths" are applied to specific paths, and the map key
# is the name of the path.
# Any setting in "pathDefaults" can be overridden here.
# It's possible to use regular expressions by using a tilde as prefix,
# for example "~^(test1|test2)$" will match both "test1" and "test2",
# for example "~^prefix" will match all paths that start with "prefix".
paths:
  rpi:
    source: rpiCamera
  # Applied to all paths that do not match another entry.
  all_others:

DEBUG log output of mediamtx

$ sudo journalctl -fu mediamtx
[0:32:36.768936023] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 1 for ISP Stats
[0:32:36.768982533] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video16[21:cap]: Queueing buffer 0
[0:32:36.769105450] [2278] DEBUG RPI pipeline_base.cpp:1478 Completing request sequence: 40
[0:32:36.769152950] [2278] DEBUG Request request.cpp:129 Request(40:C:0/1:367948655120)
[0:32:36.771604148] [2278] DEBUG RPI pipeline_base.cpp:1493 Going into Idle state
[0:32:36.771713523] [2278] DEBUG RPI pipeline_base.cpp:748 queueRequestDevice: New request sequence: 46
[0:32:36.771755710] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 6 for ISP Output0
[0:32:36.771814408] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video14[19:cap]: Queueing buffer 5
[0:32:36.771959721] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.973760521
[0:32:36.772172637] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.973546980
[0:32:36.794713575] [2278] DEBUG RPI pipeline_base.cpp:1378 Frame start 48
[0:32:36.794832325] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:240 frame 48 started
[0:32:36.794893367] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:270 Setting Exposure to 1847 at index 48
[0:32:36.794943367] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:270 Setting Analogue Gain to 112 at index 47
[0:32:36.795039825] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:270 Setting Vertical Blanking to 3693 at index 48
[0:32:36.795126023] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.950594792
[0:32:36.812190762] [2278] DEBUG V4L2 v4l2_videodevice.cpp:1731 /dev/video0[16:cap]: Dequeuing buffer 0
[0:32:36.812305867] [2278] DEBUG Timer timer.cpp:93 Starting timer 0x7fa003d7d8: deadline 0:32:37.812299721
[0:32:36.812364825] [2278] DEBUG RPI vc4.cpp:824 Stream Unicam Image buffer dequeue, buffer id 1, timestamp: 1956794594000
[0:32:36.812412690] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:220 Reading Exposure to 1846 at index 46
[0:32:36.812453210] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:220 Reading Analogue Gain to 112 at index 46
[0:32:36.812489512] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:220 Reading Vertical Blanking to 3693 at index 46
[0:32:36.812526908] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:220 Reading Horizontal Blanking to 5520 at index 46
[0:32:36.812573262] [2278] DEBUG ClockRec clock_recovery.cpp:111 addSample
[0:32:36.812606648] [2278] DEBUG ClockRec clock_recovery.cpp:141 addSample 1956812602 1755715977977179
[0:32:36.812647481] [2278] DEBUG ClockRec clock_recovery.cpp:225 getOutput 1956812602 1755715977977179
[0:32:36.812681283] [2278] DEBUG ClockRec clock_recovery.cpp:225 getOutput 1956746024 1755715977910601
[0:32:36.812713731] [2278] DEBUG ClockRec clock_recovery.cpp:225 getOutput 1956812602 1755715977977179
[0:32:36.812746335] [2278] DEBUG ClockRec clock_recovery.cpp:225 getOutput 1956794594 1755715977959171
[0:32:36.812806856] [2278] DEBUG V4L2 v4l2_videodevice.cpp:1731 /dev/video1[17:cap]: Dequeuing buffer 0
[0:32:36.812852117] [2278] DEBUG RPI vc4.cpp:824 Stream Unicam Embedded buffer dequeue, buffer id 1, timestamp: 1956794594000
[0:32:36.812900085] [2278] DEBUG RPI vc4.cpp:1014 Signalling prepareIsp: Bayer buffer id: 1
[0:32:36.812936283] [2278] DEBUG RPI vc4.cpp:1029 Signalling prepareIsp: Embedded buffer id: 1
[0:32:36.813021335] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.999283334
[0:32:36.813209929] [2282] DEBUG IPARPI ipa_base.cpp:1422 Metadata - Exposure time: 24663.77us Frame length: 4989 Line length: 13.36us Gain: 1.12281 Lens: 3.23885
[0:32:36.813338158] [2282] DEBUG IPARPI cam_helper_imx708.cpp:111 Embedded buffer size: 28800
[0:32:36.813399252] [2282] DEBUG IPARPI cam_helper.cpp:243 Metadata updated - Exposure time: 24663.77us Frame length: 4989 Line length: 13.36us Gain: 1.12281 Lens: 3.23885 Temperature: 56
[0:32:36.813666023] [2282] DEBUG RPiDpc dpc.cpp:50 strength 1
[0:32:36.813713054] [2282] DEBUG RPiNoise noise.cpp:77 constant 8.47701 slope 2.11925
[0:32:36.813760919] [2282] DEBUG RPiGeq geq.cpp:75 offset 241 slope 0.00322246 (analogue gain 1.12281 lux 392.89)
[0:32:36.813814929] [2282] DEBUG RPiSdn sdn.cpp:57 Noise profile: constant 8.47701 slope 2.11925
[0:32:36.813859200] [2282] DEBUG RPiSdn sdn.cpp:66 programmed constant 27.1264 slope 6.78161 strength 0.75
[0:32:36.813905242] [2282] DEBUG RPiAwb awb.cpp:369 frame_count 10 speed 0.05
[0:32:36.813948054] [2282] DEBUG RPiAwb awb.cpp:388 Using AWB gains r 0.963526 g 1 b 1.64142
[0:32:36.813996231] [2282] DEBUG RPiAgc agc.cpp:314 prepare for channel 0
[0:32:36.814037690] [2282] DEBUG RPiAgc agc_channel.cpp:511 Want total exposure 28759.03us
[0:32:36.814087794] [2282] DEBUG RPiAgc agc_channel.cpp:517 Actual exposure 27692.65us
[0:32:36.814131075] [2282] DEBUG RPiAgc agc_channel.cpp:518 Use digitalGain 1.03851
[0:32:36.814173471] [2282] DEBUG RPiAgc agc_channel.cpp:519 Effective exposure 28759.03us
[0:32:36.814234929] [2282] DEBUG RPiAgc agc_channel.cpp:604 Lock count updated to 5
[0:32:36.814274981] [2282] DEBUG RPiAlsc alsc.cpp:395 frame count 10 speed 0.05
[0:32:36.814364929] [2282] DEBUG RPiCcm ccm.cpp:166 colour temperature 4500K
[0:32:36.814406127] [2282] DEBUG RPiCcm ccm.cpp:168 CCM: 1.52876 -0.234284 -0.29448     -0.407327 1.80236 -0.395045     -0.0535264 -0.568258 1.62178
[0:32:36.814486908] [2282] DEBUG RPiAf af.cpp:638 2 sst2->2 stp0->0 ft3.24->3.24 fs3.24->3.24 cont=6560 phase=0 conf=89
[0:32:36.814559148] [2282] DEBUG IPARPI vc4.cpp:323 Applying WB R: 0.963526 B: 1.64142
[0:32:36.814925919] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.997379844
[0:32:36.815382742] [2278] DEBUG RPI vc4.cpp:937 Input re-queue to ISP, buffer id 1, timestamp: 1956794594000
[0:32:36.815438419] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 0 for ISP Input
[0:32:36.815485919] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video13[18:out]: Queueing buffer 0
[0:32:36.815588992] [2278] DEBUG RPI pipeline_base.cpp:1433 Returning buffer to stream Unicam Embedded
[0:32:36.815629512] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 1 for Unicam Embedded
[0:32:36.815671804] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video1[17:cap]: Queueing buffer 0
[0:32:36.815731440] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.996572813
[0:32:36.815808679] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.996495104
[0:32:36.832309252] [2278] DEBUG V4L2 v4l2_videodevice.cpp:1731 /dev/video13[18:out]: Dequeuing buffer 0
[0:32:36.832444617] [2278] DEBUG RPI vc4.cpp:858 Stream ISP Input buffer complete, buffer id 1, timestamp: 1956794594000
[0:32:36.832488315] [2278] DEBUG RPI pipeline_base.cpp:1433 Returning buffer to stream Unicam Image
[0:32:36.832526075] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 1 for Unicam Image
[0:32:36.832570658] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video0[16:cap]: Queueing buffer 0
[0:32:36.832652377] [2278] DEBUG V4L2 v4l2_videodevice.cpp:1731 /dev/video14[19:cap]: Dequeuing buffer 6
[0:32:36.832695658] [2278] DEBUG RPI vc4.cpp:886 Stream ISP Output0 buffer complete, buffer id 7, timestamp: 1956794594000
[0:32:36.832729252] [2278] DEBUG RPI pipeline_base.cpp:1423 Completing request buffer for stream ISP Output0
[0:32:36.832775971] [2278] DEBUG V4L2 v4l2_videodevice.cpp:1731 /dev/video15[20:cap]: Dequeuing buffer 0
[0:32:36.832879981] [2278] DEBUG RPI vc4.cpp:886 Stream ISP Output1 buffer complete, buffer id 1, timestamp: 1956794594000
[0:32:36.832917637] [2278] DEBUG RPI pipeline_base.cpp:1433 Returning buffer to stream ISP Output1
[0:32:36.832952585] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 1 for ISP Output1
[0:32:36.832990502] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video15[20:cap]: Queueing buffer 0
[0:32:36.833092273] [2278] DEBUG V4L2 v4l2_videodevice.cpp:1731 /dev/video16[21:cap]: Dequeuing buffer 0
[0:32:36.833134252] [2278] DEBUG RPI vc4.cpp:886 Stream ISP Stats buffer complete, buffer id 1, timestamp: 1956794594000
[0:32:36.833214981] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.979089323
[0:32:36.833584773] [2282] DEBUG RPiLux lux.cpp:95 : estimated lux 392.917
[0:32:36.833658575] [2282] DEBUG RPiAwb awb.cpp:399 frame_phase 10
[0:32:36.833693054] [2282] DEBUG RPiAwb awb.cpp:409 Awb lux value is 392.917
[0:32:36.833732429] [2282] DEBUG RPiAwb awb.cpp:341 Starting AWB calculation
[0:32:36.833792117] [2282] DEBUG RPiAgc agc.cpp:333 process for channel 0
[0:32:36.833824981] [2282] DEBUG RPiAgc agc.cpp:340 Save DeviceStatus and stats for channel 0
[0:32:36.833878627] [2280] DEBUG RPiAwb awb.cpp:773 Valid zones: 192
[0:32:36.833946544] [2280] DEBUG RPiAwb awb.cpp:734 Grey world AWB
[0:32:36.833867481] [2282] DEBUG RPiAgc agc_channel.cpp:615 ev 1 fixedExposureTime 0.00us fixedAnalogueGain 0
[0:32:36.834012065] [2282] DEBUG RPiAgc agc_channel.cpp:652 exposureMode normal constraintMode normal meteringMode centre-weighted
[0:32:36.834058262] [2282] DEBUG RPiAgc agc_channel.cpp:771 Initial Y 0.152579 target 0.161965 gives gain 1.0546
[0:32:36.834069721] [2280] DEBUG RPiAwb awb.cpp:779 CT found is 4500 with gains r 0.964506 and b 1.64177
[0:32:36.834109877] [2282] DEBUG RPiAgc agc_channel.cpp:771 Initial Y 0.16091 target 0.161965 gives gain 1.05496
[0:32:36.834158262] [2282] DEBUG RPiAgc agc_channel.cpp:780 Constraint has target_Y 0.2 giving gain 0.200784
[0:32:36.834202325] [2282] DEBUG RPiAgc agc_channel.cpp:792 Final gain 1.05496 (target_Y 0.161965 ev 1 base_ev 1)
[0:32:36.834282690] [2282] DEBUG RPiAgc agc_channel.cpp:828 Target totalExposure 29214.53us
[0:32:36.834332846] [2282] DEBUG RPiAgc agc_channel.cpp:932 After filtering, totalExposure 28759.03us no dg 27709.15us
[0:32:36.834394877] [2282] DEBUG RPiAgc agc_channel.cpp:834 Total exposure before channel constraints 28759.03us
[0:32:36.834441387] [2282] DEBUG RPiAgc agc_channel.cpp:862 Total exposure after channel constraints 28759.03us
[0:32:36.834488002] [2282] DEBUG RPiAgc agc_channel.cpp:877 after AWB, target dg 1.03785 gain 1.05496 target_Y 0.161965
[0:32:36.834532898] [2282] DEBUG RPiAgc agc_channel.cpp:894 Digital gain 1.03785 desaturate? 0
[0:32:36.834572273] [2282] DEBUG RPiAgc agc_channel.cpp:896 Target totalExposureNoDG 27710.07us
[0:32:36.834635346] [2282] DEBUG RPiAgc agc_channel.cpp:974 Divided up exposure time and gain are 24679.28us and 1.12281
[0:32:36.834698367] [2282] DEBUG RPiAgc agc_channel.cpp:1015 Output written, total exposure requested is 28759.03us
[0:32:36.834745606] [2282] DEBUG RPiAgc agc_channel.cpp:1017 Camera exposure update: exposure time 24679.28us analogue gain 1.12281
[0:32:36.834810294] [2282] DEBUG RPiAlsc alsc.cpp:430 frame_phase 4
[0:32:36.834850137] [2282] DEBUG RPiContrast contrast.cpp:111 Move histogram point 512.317 to 983.04
[0:32:36.834896492] [2282] DEBUG RPiContrast contrast.cpp:115 Final values 983.04 -> 983.04
[0:32:36.834944148] [2282] DEBUG RPiContrast contrast.cpp:132 Move histogram point 30094.2 to 62259.2
[0:32:36.835007325] [2282] DEBUG RPiContrast contrast.cpp:136 Final values 60259.2 -> 62259.2
[0:32:36.835109825] [2282] DEBUG IPARPI ipa_base.cpp:1698 Applying AGC Exposure: 24677.13us (Exposure lines: 1847, AGC requested 24679.28us) Gain: 1.12281 (Gain Code: 112)
[0:32:36.835262377] [2282] DEBUG RPiAgc agc.cpp:97 autoExposureEnabled
[0:32:36.835439252] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:182 Queuing Analogue Gain to 112 at index 49
[0:32:36.835487846] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:182 Queuing Exposure to 1847 at index 49
[0:32:36.835530242] [2278] DEBUG RPiDelayedControls delayed_controls.cpp:182 Queuing Vertical Blanking to 3693 at index 49
[0:32:36.835651544] [2278] DEBUG RPI pipeline_base.cpp:1433 Returning buffer to stream ISP Stats
[0:32:36.835690971] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 1 for ISP Stats
[0:32:36.835736387] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video16[21:cap]: Queueing buffer 0
[0:32:36.835846440] [2278] DEBUG RPI pipeline_base.cpp:1478 Completing request sequence: 41
[0:32:36.835885762] [2278] DEBUG Request request.cpp:129 Request(41:C:0/1:367948655120)
[0:32:36.838288835] [2278] DEBUG RPI pipeline_base.cpp:1493 Going into Idle state
[0:32:36.838376283] [2278] DEBUG RPI pipeline_base.cpp:748 queueRequestDevice: New request sequence: 47
[0:32:36.838416856] [2278] DEBUG RPISTREAM rpi_stream.cpp:271 Queuing buffer 7 for ISP Output0
[0:32:36.838461596] [2278] DEBUG V4L2 v4l2_videodevice.cpp:2011 /dev/video14[19:cap]: Queueing buffer 6
[0:32:36.838562742] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.973742292
[0:32:36.838675450] [2278] DEBUG Event event_dispatcher_poll.cpp:215 next timer 0x7fa003d7d8 expires in 0.973628281
[0:32:36.861324981] [2278] DEBUG RPI pipeline_base.cpp:1378 Frame start 49
...

go2rtc YAML config

streams:
  dogcam:
    - rtsp://192.168.1.46:8554/h264_ulaw.sdp

api:
  origin: '*'
log:
  level: trace
  format: text
webrtc:
  candidates:
    - stun:8555
ffmpeg:
  bin: /opt/homebrew/bin/ffmpeg

Trace log output of go2rtc

11:53:03.025 INF go2rtc platform=darwin/arm64 revision=fa580c5 version=1.9.9
11:53:03.025 DBG build vcs.time=2025-03-10T02:51:40Z version=go1.24.1
11:53:03.025 INF config path=/Users/rlue/tmp/go2rtc.yaml
11:53:03.025 TRC [api] register path path=/
11:53:03.025 TRC [api] register path path=/api
11:53:03.025 TRC [api] register path path=/api/config
11:53:03.025 TRC [api] register path path=/api/exit
11:53:03.025 TRC [api] register path path=/api/restart
11:53:03.025 TRC [api] register path path=/api/log
11:53:03.025 TRC [api] register path path=/api/ws
11:53:03.026 TRC [api] register path path=/api/streams
11:53:03.026 TRC [api] register path path=/api/streams.dot
11:53:03.026 INF [rtsp] listen addr=:8554
11:53:03.026 INF [api] listen addr=:1984
11:53:03.027 INF [webrtc] listen addr=:8555
11:53:03.027 TRC [api] register path path=/api/webrtc
11:53:03.027 TRC [api] register path path=/api/frame.mp4
11:53:03.027 TRC [api] register path path=/api/stream.mp4
11:53:03.027 TRC [api] register path path=/api/stream.m3u8
11:53:03.027 TRC [api] register path path=/api/hls/playlist.m3u8
11:53:03.027 TRC [api] register path path=/api/hls/segment.ts
11:53:03.027 TRC [api] register path path=/api/hls/init.mp4
11:53:03.027 TRC [api] register path path=/api/hls/segment.m4s
11:53:03.027 TRC [api] register path path=/api/frame.jpeg
11:53:03.027 TRC [api] register path path=/api/stream.mjpeg
11:53:03.027 TRC [api] register path path=/api/stream.ascii
11:53:03.027 TRC [api] register path path=/api/stream.y4m
11:53:03.027 TRC [api] register path path=/static
11:53:03.027 TRC [api] register path path=/streams
11:53:03.027 TRC [api] register path path=/stream/
11:53:03.027 TRC [hass] can't import config: open .storage/core.config_entries: no such file or directory
11:53:03.027 TRC [api] register path path=/api/hass
11:53:03.027 TRC [api] register path path=/onvif/
11:53:03.027 TRC [api] register path path=/api/onvif
11:53:03.027 TRC [api] register path path=/api/webtorrent
11:53:03.027 TRC [api] register path path=/api/stream.flv
11:53:03.027 TRC [api] register path path=/api/ffmpeg
11:53:03.027 TRC [api] register path path=/api/ffmpeg/devices
11:53:03.027 TRC [api] register path path=/api/ffmpeg/hardware
11:53:03.027 TRC [api] register path path=/api/stream
11:53:03.027 TRC [api] register path path=/api/dvrip
11:53:03.027 TRC [api] register path path=/api/stream.ts
11:53:03.028 TRC [api] register path path=/api/stream.aac
11:53:03.028 TRC [api] register path path=/api/roborock
11:53:03.028 TRC [api] register path path=/api/homekit
11:53:03.028 TRC [api] register path path=/api/ring
11:53:03.028 TRC [api] register path path=/api/nest
11:53:03.028 TRC [api] register path path=/api/gopro
11:53:03.028 TRC [api] register path path=/api/stack
11:53:06.130 TRC [api] GET /stream.html?src=dogcam 127.0.0.1:58373
11:53:06.154 TRC [api] GET /video-stream.js 127.0.0.1:58373
11:53:06.171 TRC [api] GET /video-rtc.js 127.0.0.1:58373
11:53:06.178 TRC [api] GET /api/ws?src=dogcam 127.0.0.1:58374
11:53:06.216 TRC [api] ws msg type=mse
11:53:06.216 TRC [mp4] new WS/MSE consumer codecs=avc1.640029,avc1.64002A,avc1.640033,hvc1.1.6.L153.B0,mp4a.40.2,mp4a.40.5,flac,opus
11:53:06.216 TRC [streams] check cons=0 media=video, sendonly, H264, H265
11:53:06.218 TRC [api] ws msg type=webrtc/offer
11:53:06.218 TRC [api] ws msg type=webrtc/candidate
11:53:06.218 TRC [api] ws msg type=webrtc/candidate
11:53:06.218 TRC [api] ws msg type=webrtc/candidate
11:53:06.218 TRC [api] ws msg type=webrtc/candidate
11:53:06.218 TRC [api] ws msg type=webrtc/candidate
11:53:06.218 TRC [api] ws msg type=webrtc/candidate
11:53:06.219 TRC [api] ws msg type=webrtc/candidate
11:53:06.219 TRC [api] ws msg type=webrtc/candidate
11:53:06.221 TRC [webrtc] remote candidate="candidate:2 1 UDP 2122252543 70300d91-d796-4528-8d91-559c9a9f8712.local 57729 typ host"
11:53:06.221 DBG [webrtc] new consumer src=dogcam
11:53:06.222 TRC [webrtc] remote candidate="candidate:0 1 UDP 2122187007 351f959c-757c-4e66-bfe3-9abf34bc7ae7.local 60826 typ host"
11:53:06.222 TRC [webrtc] remote candidate="candidate:4 1 TCP 2105458943 351f959c-757c-4e66-bfe3-9abf34bc7ae7.local 9 typ host tcptype active"
11:53:06.222 TRC [webrtc] remote candidate="candidate:5 1 TCP 2105524479 70300d91-d796-4528-8d91-559c9a9f8712.local 9 typ host tcptype active"
11:53:06.222 TRC [webrtc] remote candidate="candidate:0 2 UDP 2122187006 351f959c-757c-4e66-bfe3-9abf34bc7ae7.local 49269 typ host"
11:53:06.222 TRC [webrtc] remote candidate="candidate:2 2 UDP 2122252542 70300d91-d796-4528-8d91-559c9a9f8712.local 59837 typ host"
11:53:06.222 TRC [webrtc] remote candidate="candidate:4 2 TCP 2105458942 351f959c-757c-4e66-bfe3-9abf34bc7ae7.local 9 typ host tcptype active"
11:53:06.222 TRC [webrtc] offer:
v=0
o=mozilla...THIS_IS_SDPARTA-99.0 476660437716760517 0 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 17:19:62:1A:4D:18:BE:25:58:A7:9C:7E:41:D6:38:66:8F:6C:C2:84:03:43:32:CE:66:A9:02:46:73:E7:77:25
a=group:BUNDLE 0 1
a=ice-options:trickle
a=msid-semantic:WMS *
m=video 9 UDP/TLS/RTP/SAVPF 120 124 121 125 126 127 97 98 105 106 103 104 99 100 123 122 119
c=IN IP4 0.0.0.0
a=recvonly
a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap:4 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
a=extmap:5 urn:ietf:params:rtp-hdrext:toffset
a=extmap:6/recvonly http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
a=extmap:7 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
a=extmap-allow-mixed
a=fmtp:126 profile-level-id=42e01f;level-asymmetry-allowed=1;packetization-mode=1
a=fmtp:97 profile-level-id=42e01f;level-asymmetry-allowed=1
a=fmtp:105 profile-level-id=42001f;level-asymmetry-allowed=1;packetization-mode=1
a=fmtp:103 profile-level-id=42001f;level-asymmetry-allowed=1
a=fmtp:120 max-fs=12288;max-fr=60
a=fmtp:124 apt=120
a=fmtp:121 max-fs=12288;max-fr=60
a=fmtp:125 apt=121
a=fmtp:127 apt=126
a=fmtp:98 apt=97
a=fmtp:106 apt=105
a=fmtp:104 apt=103
a=fmtp:100 apt=99
a=fmtp:119 apt=122
a=ice-pwd:6fe5a1d5a6c066c10c3c64d9869bd6ee
a=ice-ufrag:116b42be
a=mid:0
a=rtcp-fb:120 nack
a=rtcp-fb:120 nack pli
a=rtcp-fb:120 ccm fir
a=rtcp-fb:120 goog-remb
a=rtcp-fb:120 transport-cc
a=rtcp-fb:121 nack
a=rtcp-fb:121 nack pli
a=rtcp-fb:121 ccm fir
a=rtcp-fb:121 goog-remb
a=rtcp-fb:121 transport-cc
a=rtcp-fb:126 nack
a=rtcp-fb:126 nack pli
a=rtcp-fb:126 ccm fir
a=rtcp-fb:126 goog-remb
a=rtcp-fb:126 transport-cc
a=rtcp-fb:97 nack
a=rtcp-fb:97 nack pli
a=rtcp-fb:97 ccm fir
a=rtcp-fb:97 goog-remb
a=rtcp-fb:97 transport-cc
a=rtcp-fb:105 nack
a=rtcp-fb:105 nack pli
a=rtcp-fb:105 ccm fir
a=rtcp-fb:105 goog-remb
a=rtcp-fb:105 transport-cc
a=rtcp-fb:103 nack
a=rtcp-fb:103 nack pli
a=rtcp-fb:103 ccm fir
a=rtcp-fb:103 goog-remb
a=rtcp-fb:103 transport-cc
a=rtcp-fb:99 nack
a=rtcp-fb:99 nack pli
a=rtcp-fb:99 ccm fir
a=rtcp-fb:99 goog-remb
a=rtcp-fb:99 transport-cc
a=rtcp-fb:123 nack
a=rtcp-fb:123 nack pli
a=rtcp-fb:123 ccm fir
a=rtcp-fb:123 goog-remb
a=rtcp-fb:123 transport-cc
a=rtcp-fb:122 nack
a=rtcp-fb:122 nack pli
a=rtcp-fb:122 ccm fir
a=rtcp-fb:122 goog-remb
a=rtcp-fb:122 transport-cc
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:120 VP8/90000
a=rtpmap:124 rtx/90000
a=rtpmap:121 VP9/90000
a=rtpmap:125 rtx/90000
a=rtpmap:126 H264/90000
a=rtpmap:127 rtx/90000
a=rtpmap:97 H264/90000
a=rtpmap:98 rtx/90000
a=rtpmap:105 H264/90000
a=rtpmap:106 rtx/90000
a=rtpmap:103 H264/90000
a=rtpmap:104 rtx/90000
a=rtpmap:99 AV1/90000
a=rtpmap:100 rtx/90000
a=rtpmap:123 ulpfec/90000
a=rtpmap:122 red/90000
a=rtpmap:119 rtx/90000
a=setup:actpass
a=ssrc:902200253 cname:{d7ceb452-0ccf-4e6d-9769-803054052456}
m=audio 0 UDP/TLS/RTP/SAVPF 109 9 0 8 101
c=IN IP4 0.0.0.0
a=bundle-only
a=recvonly
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=extmap:2/recvonly urn:ietf:params:rtp-hdrext:csrc-audio-level
a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap-allow-mixed
a=fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=fmtp:101 0-15
a=ice-pwd:6fe5a1d5a6c066c10c3c64d9869bd6ee
a=ice-ufrag:116b42be
a=mid:1
a=rtcp-mux
a=rtpmap:109 opus/48000/2
a=rtpmap:9 G722/8000/1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000/1
a=setup:actpass
a=ssrc:3826867229 cname:{d7ceb452-0ccf-4e6d-9769-803054052456}

11:53:06.223 TRC [streams] check cons=1 media=video, sendonly, VP8, VP9, H264, AV1
11:53:06.222 TRC [webrtc] remote candidate="candidate:5 2 TCP 2105524478 70300d91-d796-4528-8d91-559c9a9f8712.local 9 typ host tcptype active"
11:53:06.225 TRC [rtsp] client request:
DESCRIBE rtsp://192.168.2.15:8554/rpi RTSP/1.0
Require: www.onvif.org/ver20/backchannel
User-Agent: go2rtc/1.9.9
CSeq: 1
Accept: application/sdp


11:53:06.296 TRC [api] ws msg type=webrtc/candidate
11:53:06.296 TRC [webrtc] remote candidate="candidate:3 1 UDP 1686052607 2a09:bac0:1001:cc2::1bd:fd 34059 typ srflx raddr 0.0.0.0 rport 0"
11:53:06.326 TRC [api] ws msg type=webrtc/candidate
11:53:06.326 TRC [webrtc] remote candidate="candidate:3 2 UDP 1686052606 2a09:bac0:1001:cc2::1bd:fd 46936 typ srflx raddr 0.0.0.0 rport 0"
11:53:06.346 TRC [api] ws msg type=webrtc/candidate
11:53:06.346 TRC [webrtc] remote candidate="candidate:1 1 UDP 1685987327 8.29.228.89 34988 typ srflx raddr 0.0.0.0 rport 0"
11:53:06.389 TRC [api] ws msg type=webrtc/candidate
11:53:06.389 TRC [webrtc] remote candidate="candidate:1 2 UDP 1685987326 8.29.228.89 34973 typ srflx raddr 0.0.0.0 rport 0"
11:53:06.390 TRC [api] ws msg type=webrtc/candidate
11:53:06.390 TRC [api] ws msg type=webrtc/candidate
11:53:06.390 TRC [webrtc] remote candidate=
11:53:06.390 TRC [webrtc] remote candidate=
11:53:11.226 TRC [rtsp] describe (backchannel=true) err: read tcp 192.168.1.29:58375->192.168.2.15:8554: i/o timeout
11:53:11.237 TRC [rtsp] client request:
DESCRIBE rtsp://192.168.2.15:8554/rpi RTSP/1.0
Accept: application/sdp
User-Agent: go2rtc/1.9.9
CSeq: 1


11:53:16.239 TRC [streams] dial cons=0 prod=0 error="read tcp 192.168.1.29:58377->192.168.2.15:8554: i/o timeout"
11:53:16.239 TRC [streams] check cons=0 media=audio, sendonly, MPEG4-GENERIC, PCMA, PCMU, L16, PCML, OPUS
11:53:16.239 TRC [streams] skip cons=0 prod=0
11:53:16.239 DBG [mp4] add consumer error="streams: read tcp 192.168.1.29:58377->192.168.2.15:8554: i/o timeout"
11:53:16.241 TRC [api] ws msg type=mjpeg
11:53:16.241 TRC [streams] check cons=1 media=video, sendonly, JPEG, RAW
11:53:16.251 TRC [rtsp] client request:
DESCRIBE rtsp://192.168.2.15:8554/rpi RTSP/1.0
Require: www.onvif.org/ver20/backchannel
User-Agent: go2rtc/1.9.9
CSeq: 1
Accept: application/sdp


11:53:21.252 TRC [rtsp] describe (backchannel=true) err: read tcp 192.168.1.29:58380->192.168.2.15:8554: i/o timeout
11:53:21.262 TRC [rtsp] client request:
DESCRIBE rtsp://192.168.2.15:8554/rpi RTSP/1.0
Accept: application/sdp
User-Agent: go2rtc/1.9.9
CSeq: 1

Note: the feed fails with and without go2rtc's ffmpeg module; that is, setting the go2rtc source to either of the following:

• rtsp://$MEDIAMTX_SERVER_IP:8554/rpi
• ffmpeg:rtsp://$MEDIAMTX_SERVER_IP:8554/rpi

In the former case, go2rtc complains of an i/o timeout error; in the latter, it complains "Invalid data found when processing input."

Setup

• mediamtx server: Raspberry Pi 3B+ running dietpi

         _,met$$$$$gg.          dietpi@paisley
      ,g$$$$$$$$$$$$$$$P.       --------------
    ,g$$P"     """Y$$.".        OS: Debian GNU/Linux 12 (bookworm) aarch64
   ,$$P'              `$$$.     Host: Raspberry Pi 3 Model B Plus Rev 1.3
  ',$$P       ,ggs.     `$$b:   Kernel: 6.12.34+rpt-rpi-v8
  `d$$'     ,$P"'   .    $$$    Uptime: 29 mins
   $$P      d$'     ,    $$P    Packages: 563 (dpkg)
   $$:      $$.   -    ,d$$'    Shell: bash 5.2.15
   $$;      Y$b._   _,d$P'      Terminal: /dev/pts/0
   Y$$.    `.`"Y$$$$P"'         CPU: (4) @ 1.400GHz
   `$$b      "-.__              Memory: 177MiB / 886MiB
    `Y$$
     `Y$$.
       `$$b.
         `Y$$b.
            `"Y$b._
                `"""
  

• mediamtx version: 1.14.0

---

Thanks in advance for your time and help.

[aler9]

Sorry but what you provided makes impossible to replicate the issue. You provided logs of anything except for the only thing you needed to, which is MediaMTX, which contains clear indications on how the stream is encoded. If you still have issues, open a bug report (not a discussion) and provide relevant data and ways to replicate. If you think this is the same as #4879, provide information there.

[rlue]

You provided logs of anything except for the only thing you needed to, which is MediaMTX

I'm not sure what you mean. I included the output of sudo journalctl -fu mediamtx under a collapsible segment titled "DEBUG log output of mediamtx". Is that not what you're referring to?

which contains clear indications on how the stream is encoded

sorry, I don't have a ton of background knowledge on the subject. What does this log output look like? Was it not included in the logs I posted above?