install & upgrade ffmpeg

build_ffmpeg.sh

#!/bin/sh -

############################################
#
# build_ffmpeg.sh
#
# functions for install & upgrading ffmpeg.
#
# requires:
#   sudo, aptitude, git-core, checkinstall
#
############################################

# working dir (is equivalent to script dir)
basedir=$(cd $(dirname "$0");pwd)

download_x264()
{
  cd "$basedir" && git clone git://git.videolan.org/x264.git
  return $?
}

update_x264()
{
  cd "$basedir/x264" && git pull
  return $?
}

make_x264()
{
  # version of x264 in ubuntu package
  epoch=$(aptitude versions -F '%p' x264 | sort -nr | head -n 1 | sed 's/:.*$//')

  cd "$basedir/x264" \
    && ./configure --enable-static --prefix=/usr \
    && make \
    && sudo checkinstall --pkgname=x264                      \
           --pkgversion="$(expr $epoch + 1):$(./version.sh | \
           awk -F'[\" ]' '/POINT/{print $4"+git"$5}')"       \
           --backup=no --default --deldoc=yes
  return $?
}



download_ffmpeg()
{
  cd "$basedir" && git clone git://source.ffmpeg.org/ffmpeg.git
  return $?
}

update_ffmpeg()
{
  cd "$basedir/ffmpeg" && git pull
  return $?
}

make_ffmpeg()
{
  # version of ffmpeg in ubuntu package
  epoch=$(aptitude versions -F '%p' ffmpeg | sort -nr | head -n 1 | sed 's/:.*$//')

  cd "$basedir/ffmpeg" \
    && ./configure --enable-gpl --enable-static --disable-shared \
           --enable-pthreads --enable-nonfree --enable-postproc  \
           --enable-libx264 --enable-libfaac --enable-libmp3lame \
           --prefix=/usr                                         \
    && make \
    && sudo checkinstall --pkgname=ffmpeg             \
           --pkgversion="$(expr $epoch + 1):$(cat     \
           RELEASE)$(./version.sh | sed 's/^.*-g//')" \
           --requires=x264,libmp3lame-dev,libfaac-dev \
           --backup=no --default --deldoc=yes
  return $?
}



purge_conflicts_x264()
{
  sudo aptitude purge libx264-dev x264
  return $?
}

install_depends_x264()
{
  sudo aptitude install yasm
  return $?
}

purge_conflicts_ffmpeg()
{
  sudo aptitude purge libavcodec-dev libavdevice-dev libavfilter-dev \
      libavformat-dev libavutil-dev libpostproc-dev libswscale-dev
  return $?
}

install_depends_ffmpeg()
{
  sudo aptitude install yasm pkg-config libmp3lame-dev libfaac-dev
  return $?
}



install_x264()
{
  if test -d "$basedir/x264/.git"
    then
      update_x264 || return $?
    else
      download_x264 || return $?
  fi
  purge_conflicts_x264 && install_depends_x264 && make_x264
  return $?
}

install_ffmpeg()
{
  if test -d "$basedir/ffmpeg/.git"
    then
      update_ffmpeg || return $?
    else
      download_ffmpeg || return $?
  fi
  purge_conflicts_ffmpeg && install_depends_ffmpeg && make_ffmpeg
  return $?
}

main()
{
  install_x264 && install_ffmpeg
  return $?
}