raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://18.136.104.166:1935/app-3782/73a840aa

sudo apt-get update && sudo apt-get upgrade && sudo rpi-update

sudo nano /etc/dphys-swapfile #CONF_SWAPSIZE=100 CONF_SWAPSIZE=2048

PACKAGES="build-essential cmake pkg-config libjpeg-dev libtiff5-dev libjasper-dev libpng12-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libgtk2.0-dev libatlas-base-dev gfortran" sudo apt-get install $PACKAGES -y sudo apt-get install python3-dev sudo apt-get install python3-pip cd ~

wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.4.5.zip unzip opencv.zip

wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.4.5.zip unzip opencv_contrib.zip

sudo rm opencv.zip opencv_contrib.zip wget https://bootstrap.pypa.io/get-pip.py sudo python3 get-pip.py sudo apt-get install python3-pip pip3 install numpy

cd /opencv-3.4.1/ mkdir build cd build cmake -D CMAKE_BUILD_TYPE=RELEASE
-D CMAKE_INSTALL_PREFIX=/usr/local
-D INSTALL_C_EXAMPLES=ON
-D INSTALL_PYTHON_EXAMPLES=ON
-D OPENCV_EXTRA_MODULES_PATH=/opencv_contrib-3.4.5/modules
-D BUILD_EXAMPLES=ON .. make -j4 sudo make install sudo ldconfig