# How to build FFmpeg | Debian

## Prepare
apt-get update -qq && apt-get -y install \
  autoconf \
  automake \
  build-essential \
  cmake \
  git \
  libass-dev \
  libfreetype6-dev \
  libtool \
  libvorbis-dev \
  pkg-config \
  texinfo \
  wget \
  zlib1g-dev
  
cd ~
mkdir temp
cd temp
mkdir ffmpeg_sources
mkdir bin

cd ~/temp/ffmpeg_sources && \
wget https://www.nasm.us/pub/nasm/releasebuilds/2.13.03/nasm-2.13.03.tar.bz2 && \
tar xjvf nasm-2.13.03.tar.bz2 && \
cd nasm-2.13.03 && \
./autogen.sh && \
PATH="$HOME/tempt/bin:$PATH" ./configure --prefix="$HOME/temp/ffmpeg_build" --bindir="$HOME/temp/bin" && \
make && \
make install
export PATH="$HOME/temp/bin:$PATH"

apt-get install yasm

## OpenH264
cd ~/temp
git clone https://github.com/cisco/openh264
cd openh264
git checkout v1.7.0
make
make install
cp ~temp/openh264/libopenh264.so.4 ~/temp/ffmpeg_build/lib

## If FFmpeg is preinstalled, remove it:
apt-get remove --purge ffmpeg

## FFmpeg
cd ~/temp/ffmpeg_sources
wget https://www.ffmpeg.org/releases/ffmpeg-4.0.tar.bz2
tar xjvf ffmpeg-4.0.tar.bz2
cd ffmpeg-4.0

PKG_CONFIG_PATH="$HOME/temp/ffmpeg_build/lib/pkgconfig" ./configure \
  --prefix="$HOME/temp/ffmpeg_build" \
  --pkg-config-flags="--static" \
  --extra-cflags="-I$HOME/temp/ffmpeg_build/include" \
  --extra-ldflags="-L$HOME/temp/ffmpeg_build/lib" \
  --extra-libs="-lpthread -lm" \
  --bindir="$HOME/temp/bin" \
  --disable-autodetect \
  --disable-doc \
  --enable-shared \
  --enable-pic \
  --disable-static \
  --disable-gpl \
  --disable-nonfree \
  --disable-openssl \
  --enable-libopenh264 \
  
make -j2

mkdir ~/temp/ffmpeg_build/bin
cp ./ffmpeg ~/temp/ffmpeg_build/bin/
cp ./ffmpeg_g ~/temp/ffmpeg_build/bin/
cp ./ffprobe ~/temp/ffmpeg_build/bin/