How to install Go and ffmpeg in Raspberry Pi

install_go_in_raspi.txt

mkdir -p /tmp/go
cd /tmp/go
wget https://storage.googleapis.com/golang/go1.8.3.linux-armv6l.tar.gz
sudo tar -C /usr/local -xzf go1.8.3.linux-armv6l.tar.gz
export PATH=$PATH:/usr/local/go/bin
echo "export PATH=$PATH:/usr/local/go/bin" >> ~/.profile
. ~/.profile

mkdir -p ~/go/src
mkdir -p ~/go/bin
mkdir -p ~/go/pkg

sudo apt-get install -y gcc make
cd /usr/src
sudo git clone git://git.videolan.org/x264
cd x264
sudo ./configure --host=arm-unknown-linux-gnueabi --enable-static --disable-opencl
sudo make
sudo make install
cd /usr/src
sudo git clone git://source.ffmpeg.org/ffmpeg.git
cd ffmpeg/
sudo ./configure --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
sudo make
time sudo make install
# above command may take 4 hrs