sudo apt-get install v4l2loopback-dkms v4l-utils python-gst-1.0 python3-gst-1.0 gstreamer*tools
# Note: gst-launch is actually ran as gst-launch-1.0
# Note: create video device
sudo -S ln -sf /dev/video0 /dev/video1
sudo -S chmod -R 777 /dev/video1