proxy rtsp stream on raspberry with nginx

build_nginx.sh

#install deps

sudo apt install software-properties-common dpkg-dev
sudo add-apt-repository -y ppa:nginx/stable
sudo apt-get update && upgrade -y

#download source

mkdir nginx && cd nginx
sudo apt-get source nginx
sudo apt-get build-dep nginx

#prepare build:
nano nginx-x.x.x/debian/rules
#add --with-stream at the end of 'full_configure_flags :='

#build
sudo dpkg-buildpackage -b

#install
sudo dpkg --install nginx-full_xxx.deb

#use it: https://docs.nginx.com/nginx/admin-guide/load-balancer/tcp-udp-load-balancer/