= Compile FFmpeg on CentOS 6.0 =

This guide is based on a minimal CentOS installation and will install FFmpeg with several external encoding libraries. This guide is kept relatively up to date with FFmpeg development and library sources (see the page [wiki:CentosCompilationGuide?action=history history] for changelog).

  '''Note:''' The # indicates that the command should be executed as superuser or root.

== Preparation ==
Remove any existing packages:
{{{
# yum erase ffmpeg x264 x264-devel
}}}

Get the dependencies:
{{{
# yum install gcc git make nasm pkgconfig wget
}}}

Make a source directory:
{{{
mkdir ~/ffmpeg-source
}}}

== Installation ==
=== Yasm ===
Yasm is an assembler used by x264 and FFmpeg.
{{{
cd ~/ffmpeg-source
wget http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz
tar xzvf yasm-1.2.0.tar.gz
cd yasm-1.2.0
./configure
make
# make install
}}}

  '''Note:''' If you do not require certain encoders you may skip the relevant section and then remove the appropriate ./configure option in FFmpeg. For example, if libtheora is not needed, then skip that section and then remove ''--enable-libtheora'' from the [#ffmpeg Install FFmpeg] section.

=== x264 ===#x264
H.264 video encoder.
{{{
cd ~/ffmpeg-source
git clone git://git.videolan.org/x264
cd x264
./configure --enable-static
make
# make install
}}}

=== LAME ===
MP3 audio encoder.
{{{
cd ~/ffmpeg-source
wget http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz
tar xzvf lame-3.99.5.tar.gz
cd lame-3.99.5
./configure --disable-shared --enable-nasm
make
# make install
}}}

=== libogg ===
Required for libtheora and libvorbis.
{{{
cd ~/ffmpeg-source
wget http://downloads.xiph.org/releases/ogg/libogg-1.3.0.tar.gz
tar xzvf libogg-1.3.0.tar.gz
cd libogg-1.3.0
./configure --disable-shared
make
# make install
}}}

=== libtheora ===
Theora video encoder.
{{{
cd ~/ffmpeg-source
wget http://downloads.xiph.org/releases/theora/libtheora-1.1.1.tar.gz
tar xzvf libtheora-1.1.1.tar.gz
cd libtheora-1.1.1
./configure --disable-shared
make
# make install
}}}

=== libvorbis ===
Vorbis audio encoder.
{{{
cd ~/ffmpeg-source
wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.3.tar.gz
tar xzvf libvorbis-1.3.3.tar.gz
cd libvorbis-1.3.3
./configure --disable-shared
make
# make install
}}}

=== vo-aacenc ===
!VisualOn AAC audio encoder.
{{{
cd ~/ffmpeg-source
wget http://downloads.sourceforge.net/opencore-amr/vo-aacenc-0.1.2.tar.gz
tar xzvf vo-aacenc-0.1.2.tar.gz
cd vo-aacenc-0.1.2
./configure --disable-shared
make
# make install
}}}

=== libvpx ===#libvpx
VP8 video encoder.
{{{
cd ~/ffmpeg-source
git clone http://git.chromium.org/webm/libvpx.git
cd libvpx
./configure
make
# make install
}}}

=== zlib===#zlib
ZLIB is required to decode and encode several formats including PNG.
{{{
cd ~/ffmpeg-source
wget http://zlib.net/zlib-1.2.7.tar.gz
tar xzvf zlib-1.2.7.tar.gz
cd zlib-1.2.7
./configure
make
# make install
}}}

=== FFmpeg ===#ffmpeg
{{{
cd ~/ffmpeg-source
git clone git://source.ffmpeg.org/ffmpeg
cd ffmpeg
./configure --enable-gpl --enable-libmp3lame --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-version3
make
# make install
}}}
Compilation is now complete and ffmpeg should now be ready to use. The rest of this guide shows how to update or remove FFmpeg.

  '''Note:''' Keep the ffmpeg-source directory and all contents if you intend to update or uninstall as shown below.

== Updating x264, libvpx, and FFmpeg ==
First uninstall x264, libvpx, and FFmpeg:
{{{
cd ~/ffmpeg-source/x264
# make uninstall
cd ~/ffmpeg-source/ffmpeg
# make uninstall
cd ~/ffmpeg-source/libvpx
# make uninstall
}}}

=== Update x264 ===
{{{
cd ~/ffmpeg-source/x264
make distclean
git pull
}}}
Then run ./configure, make, and make install as shown in the [#x264 Install x264] section.

=== Update libvpx ===
{{{
cd ~/ffmpeg-source/libvpx
make clean
git pull
}}}
Then run ./configure, make, and make install as shown in the [#libvpx Install libvpx] section.

=== Update FFmpeg ===
{{{
cd ~/ffmpeg-source/ffmpeg
make distclean
git pull
}}}
Then run ./configure, make, and make install as shown in the [#ffmpeg Install FFmpeg] section.

== Reverting changes made by this guide ==
{{{
cd ~/ffmpeg-source/yasm-1.2.0
# make uninstall
cd ../x264
# make uninstall
cd ../lame-3.99.5
# make uninstall
cd ../libogg-1.3.0
# make uninstall
cd ../libtheora-1.1.1
# make uninstall
cd ../libvorbis-1.3.3
# make uninstall
cd ../libvpx
# make uninstall
cd ../vo-aacenc-0.1.2
# make uninstall
cd ../zlib-1.2.7
# make uninstall
cd ../ffmpeg
# make uninstall
rm -rf ~/ffmpeg-source
# yum erase gcc git make nasm pkgconfig wget
}}}

{{{
#!comment
Todo:
Integrate installation via package management system instead of "make install" or install in home directory. Ignoring checkinstall as it is too much of a bitch to compile on CentOS 6.0.
}}}