A list of commands to configure a Nginx server to send data through RTMP

rtmp_server_commands.txt

# All the commands have been tested on a Xubuntu 22.04
# First we update our machine
sudo apt update
sudo apt upgrade

# We install the Nginx server
sudo apt install nginx

# We test and enable the firewall if it is disabled
sudo ufw status
sudo ufw enable
sudo ufw status
sudo ufw app list
sudo ufw allow 'Nginx HTTP'
sudo ufw status

# We check if Nginx is enable system-wide
systemctl status nginx

# We install the Nginx RTMP module
sudo apt install libnginx-mod-rtmp

# We open the nginx.conf file and update it with the RTMP configuration
sudo vim /etc/nginx/nginx.conf

# These are the lines to add at the end of the file
rtmp {
        server {
                listen 1935;
                chunk_size 4096;
                allow publish 127.0.0.1;
                deny publish all;

                application live {
                        live on;
                        record off;
                }
        }
}

# We enable the RTMP port (1935/TCP)
sudo ufw allow 1935/tcp
sudo ufw status

# We reload Nginx system-wide
sudo systemctl reload nginx

# The command to run on the server
ffmpeg -re -i INPUT_FILE -c:v libx264 -c:a aac -preset ultrafast -tune zerolatency rtmp://localhost/live/bbb

# The command to run on the client. Edit with the IP address of your own machine
{ffplay|mpv} rtmp://SERVER_IP_ADDRESS/live/bbb

These are the command shown in the video.
If you have other things to add, don't hesitate at shooting a comment!