Compile OpenCV with ffmpeg for python3

install.sh

sudo apt-get --assume-yes -qq remove x264 libx264-dev ffmpeg
sudo apt-get --assume-yes --purge remove libav-tools
sudo apt-get --assume-yes --purge autoremove
sudo apt-get --assume-yes update

sudo apt-get --assume-yes install libjpeg8-dev libtiff5-dev libjasper-dev libpng12-dev
sudo apt-get --assume-yes install libx264-dev
sudo apt-get --assume-yes install libgtk-3-dev
sudo apt-get --assume-yes install libatlas-base-dev gfortran
sudo apt-get --assume-yes install python2.7-dev python3.5-dev
sudo apt-get --assume-yes install qtbase5-dev

sudo apt-get --assume-yes install libopencv-dev build-essential checkinstall cmake pkg-config yasm libjpeg-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev libdc1394-22-dev libxine2-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer1.0-0 gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-doc gstreamer1.0-tools gstreamer1.0-x gstreamer1.0-alsa gstreamer1.0-gl gstreamer1.0-gtk3 gstreamer1.0-qt5 gstreamer1.0-pulseaudio libv4l-dev python-dev python-numpy libtbb-dev libqt4-dev libgtk2.0-dev libfaac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev x264 v4l-utils

sudo apt-get --assume-yes install python-setuptools
sudo easy_install pip
sudo -H pip install numpy
sudo apt-get --assume-yes install python3-setuptools
sudo easy_install3 pip
sudo -H pip3 install numpy

curl -OL "https://github.com/opencv/opencv/archive/3.2.0.zip"
mv 3.2.0.zip opencv.zip
unzip opencv.zip
cd opencv
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=OFF -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=OFF -D WITH_QT=ON -D WITH_OPENGL=ON -D PYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3  ..
make -j4

sudo make install