Using the new Raspberry Pi Imager I’ve installed the latest Raspberry Pi OS Lite (32 bit).
Enable ssh by creating a zero length file called ssh on the boot volume
touch /Volumes/boot/ssh
Create a file /Volumes/boot/wpa_supplicant.conf using your favourite text editor:
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=GB
network={
ssid="your SSID"
psk="xxxxxxxx"
key_mgmt=WPA-PSK
}
Boot the Pi and enable the camera module using raspi-config. You need to reboot before the camera is activated.
Sign in as root and run sudo -Es to get an elevated prompt. Update the the base software to the latest version then install vlc. This step will take a while…
apt install vlc
Create a script containing this command line
#!/bin/bash
raspivid -o - -t 0 -rot 180 -w 1920 -h 1080 -fps 30 -b 2000000 | cvlc -vvv stream:///dev/stdin --sout '#rtp{sdp=rtsp://:8554/stream}' :demux=h264
Test the stream by connecting to ip:8554 using vlc player on the desktop
rtsp://192.168.1.137:8554/stream
Automate the startup process by creating a service wrapper in /etc/systemd/system/rtsp-stream.service containing the following:
[Unit]
Description=auto start stream
After=multi-user.target
[Service]
Type=simple
ExecStart=/home/pi/rtsp-stream.sh
User=pi
WorkingDirectory=/home/pi
Restart=on-failure
[Install]
WantedBy=multi-user.target
Enable the service and then reboot
systemctl enable rtsp-stream.service
In Open Broadcast Studio (OBS) create a new Media Source and untick the check box for Local File and enter the RTSP URL in the input box.