Mediamtx sometimes fails on startup - rpicam, autostart

[leeprevost]

Which version are you using?

v1.15.0

Which operating system are you using?

Linux arm64 standard

Describe the issue

I have added mediamtx as a systemctl unit in startup following the guide linux/boot. Occasionally, I have found the server starts but when a client browser is already waiting, the server fails to start properly as indicated by this condition in the logs:

Sep 22 08:42:46 raspberrypi mediamtx[422]: 2025/09/22 08:42:46 INF [WebRTC] [session 725f22de] created by 192.168.1.218:63802
Sep 22 08:42:56 raspberrypi mediamtx[422]: 2025/09/22 08:42:56 INF [WebRTC] [session 725f22de] closed: deadline exceeded while waiting connection
Sep 22 08:43:04 raspberrypi mediamtx[422]: 2025/09/22 08:43:04 INF [WebRTC] [session 730c725f] created by 192.168.1.218:63802
Sep 22 08:43:14 raspberrypi mediamtx[422]: 2025/09/22 08:43:14 INF [WebRTC] [session 730c725f] closed: deadline exceeded while waiting connection
Sep 22 08:43:22 raspberrypi mediamtx[422]: 2025/09/22 08:43:22 INF [WebRTC] [session 7469222d] created by 192.168.1.218:63802
Sep 22 08:43:32 raspberrypi mediamtx[422]: 2025/09/22 08:43:32 INF [WebRTC] [session 7469222d] closed: deadline exceeded while waiting connection
Sep 22 08:43:40 raspberrypi mediamtx[422]: 2025/09/22 08:43:40 INF [WebRTC] [session 0f42ecdc] created by 192.168.1.218:63802
Sep 22 08:43:50 raspberrypi mediamtx[422]: 2025/09/22 08:43:50 INF [WebRTC] [session 0f42ecdc] closed: deadline exceeded while waiting connection
Sep 22 08:43:58 raspberrypi mediamtx[422]: 2025/09/22 08:43:58 INF [WebRTC] [session c3d85bc9] created by 192.168.1.218:63802
Sep 22 08:44:08 raspberrypi mediamtx[422]: 2025/09/22 08:44:08 INF [WebRTC] [session c3d85bc9] closed: deadline exceeded while waiting connection
Sep 22 08:44:16 raspberrypi mediamtx[422]: 2025/09/22 08:44:16 INF [WebRTC] [session ef14e307] created by 192.168.1.218:63802
Sep 22 08:44:26 raspberrypi mediamtx[422]: 2025/09/22 08:44:26 INF [WebRTC] [session ef14e307] closed: deadline exceeded while waiting connection

I'm wondering if it is starting too early (ie. some other target state) or if mediamtx has proper timing with respect to underlying camera handlers.

I can clear this easily with a simple restart:
systemctl restart mediamtx

Describe how to replicate the issue

1. start the MediaMTX in systemctl
2. publish with webrtc
3. read with rpicam

MediaMTX configuration

my config:

api: yes
rtmp: no
hls: yes
srt: no
playback: yes
#webrtcEncryption: yes
#webrtcServerKey: /home/pi/camzero2/certs/raspberrypi+3-key.pem
#webrtcServerCert: /home/pi/camzero2/certs/raspberrypi+3.pem

paths:
  cam:
    source: rpiCamera
    #runOnDemand: python3 /home/pi/camzero2/camera/rtsp_stream.py
    recordPath: /home/pi/recordings/%path/%Y-%m-%d_%H-%M-%S-%f
    rpiCameraWidth: 800
    rpiCameraHeight: 600
    rpiCameraBitrate: 5000000

MediaMTX logs

No response

Network dump

No response