Make sure gst-rpicamsrc is installed from https://github.com/thaytan/gst-rpicamsrc Install the required packages: sudo apt-get install python3 python3-gi python3-gst-1.0 python3-psutil \ gstreamer1.0-plugins-{good,bad,ugly} gstreamer1.0-alsa \ gir1.2-gst-plugins-base-1.0 gir1.2-gstreamer-1.0 gir1.2-gst-rtsp-server-1.0 For rpicamsrc (camera 1 and 2 modules), you may need to recompile gstreamer1.0-plugins-good.