afriza/install-ffmpeg-with-decklink-support-ubuntu-18.04-server.md

## install-ffmpeg-with-decklink-support-ubuntu-18.04-server.md

      
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              install-ffmpeg-with-decklink-support-ubuntu-18.04-server.md
            
          
    Compiling and installing ffmpeg with Decklink support on Ubuntu 18.04 Server


Download Desktop Video (driver) & Desktop Video SDK from https://www.blackmagicdesign.com/support/family/capture-and-playback
Install Desktop Video (driver)
tar -xf Blackmagic_Desktop_Video_Linux_*.tar
cd Blackmagic_Desktop_Video_Linux_*/deb/x86_64/
sudo dpkg -i desktopvideo_*.deb
sudo apt-get install -f
BlackmagicFirmwareUpdater status
# if prompted to update, perform an update:
BlackmagicFirmwareUpdater update 0
# if prompted to shutdown, reboot the device:
sudo reboot

Unzip Desktop Video SDK
sudo apt install unzip
unzip Blackmagic_DeckLink_SDK_*.zip
mkdir -p ~/ffmpeg_sources ~/bin
cp -r Blackmagic\ DeckLink\ SDK\ */Linux/ ~/ffmpeg_sources/BMD_SDK

Follow ffmpeg compilation instruction at https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

Install dependencies
sudo apt-get update -qq && sudo apt-get -y install \
  autoconf \
  automake \
  build-essential \
  cmake \
  git-core \
  libass-dev \
  libfreetype6-dev \
  libtool \
  libvorbis-dev \
  pkg-config \
  texinfo \
  wget \
  zlib1g-dev
sudo apt-get -y install \
  nasm yasm libx264-dev libx265-dev libnuma-dev libvpx-dev \
  libfdk-aac-dev libmp3lame-dev libopus-dev

Get ffmpeg source code and configure it.
cd ~/ffmpeg_sources
wget https://ffmpeg.org/releases/ffmpeg-4.1.3.tar.bz2
tar -xvf ffmpeg-*.tar.bz2
cd ffmpeg-*/
PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
  --prefix="$HOME/ffmpeg_build" \
  --pkg-config-flags="--static" \
  --extra-cflags="-I$HOME/ffmpeg_build/include -I$HOME/ffmpeg_sources/BMD_SDK/include" \
  --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
  --extra-libs="-lpthread -lm" \
  --bindir="$HOME/bin" \
  --enable-gpl \
  --enable-libass \
  --enable-libfdk-aac \
  --enable-libfreetype \
  --enable-libmp3lame \
  --enable-libopus \
  --enable-libvorbis \
  --enable-libvpx \
  --enable-libx264 \
  --enable-libx265 \
  --enable-nonfree \
  --enable-decklink
Note the addition of --enable-decklink and BlackMagicDesign SDK in --extra-cflags.

There are API changes in BMD SDK 11 onwards so if ffmpeg doesn't compile, compile it with BMD SDK 10.11.4
Compile and install it.
PATH="$HOME/bin:$PATH" make -j `nproc`
sudo cp ffmpeg ffprobe /usr/local/bin/