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Nowadays everyone prefers watching a video rather than reading the text. Youtube has introduced a new concept for information sharing. There are several vendors who offer product to provide the  functionality like youtube and these softwares require some modules that are usually called video sharing modules. Here is a quick way to install these modules.

NOTE: These commands are tested but may not work on your system due to different OS, architecture and setup.

1. Create a directory to do our work in
mkdir ~/ffmpeg
cd ~/ffmpeg

2. Get all the source files
wget http://www3.mplayerhq.hu/MPlayer/releases/codecs/essential-20061022.tar.bz2
wget http://rubyforge.org/frs/download.php/9225/flvtool2_1.0.5_rc6.tgz
wget http://easynews.dl.sourceforge.net/sourceforge/lame/lame-3.97.tar.gz
wget http://superb-west.dl.sourceforge.net/sourceforge/ffmpeg-php/ffmpeg-php-0.5.0.tbz2
wget http://downloads.xiph.org/releases/ogg/libogg-1.1.3.tar.gz
wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.1.2.tar.gz

3. Extract all the source files
bunzip2 essential-20061022.tar.bz2; tar xvf essential-20061022.tar
tar zxvf flvtool2_1.0.5_rc6.tgz
tar zxvf lame-3.97.tar.gz
bunzip2 ffmpeg-php-0.5.0.tbz2; tar xvf ffmpeg-php-0.5.0.tar
tar zxvf libogg-1.1.3.tar.gz
tar zxvf libvorbis-1.1.2.tar.gz

4. Create the codecs directory & import them
mkdir /usr/local/lib/codecs/
mv /essential-20061022/* /usr/local/lib/codecs/
chmod -R 755 /usr/local/lib/codecs/

5. Install SVN/Ruby (Depends on OS, this is for RHEL/CentOS)
yum install subversion
yum install ruby
yum install ncurses-devel

6. Get the latest FFMPEG/MPlayer from the subversion
svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
svn checkout svn://svn.mplayerhq.hu/mplayer/trunk mplayer

7. Compile LAME
cd ~/ffmpeg/lame-3.97
./configure
make
make install

8. Compile libOGG
cd ~/ffmpeg/libogg-1.1.3
./configure
make
make install

9. Compile libVorbis
cd ~/ffmpeg/libvorbis-1.1.2
./configure
make
make install

10. Compile flvtool2
cd ~/ffmpeg/flvtool2_1.0.5_rc6
ruby setup.rb config
ruby setup.rb setup
ruby setup.rb install

11. Compile MPlayer
cd ~/ffmpeg/mplayer
./configure
make
make install

12. Compile FFMPEG
cd ~/ffmpeg/ffmpeg
./configure –enable-libmp3lame –enable-shared –enable-gpl –enable-libogg –enable-libvorbis –disable-mmx
echo ‘#define HAVE_LRINTF 1′ >> config.h
make
make install

13. Finalize the codec setups
ln -s /usr/local/lib/libavformat.so.50 /usr/lib/libavformat.so.50
ln -s /usr/local/lib/libavcodec.so.51 /usr/lib/libavcodec.so.51
ln -s /usr/local/lib/libavutil.so.49 /usr/lib/libavutil.so.49
ln -s /usr/local/lib/libmp3lame.so.0 /usr/lib/libmp3lame.so.0
ln -s /usr/local/lib/libavformat.so.51 /usr/lib/libavformat.so.51

14. Compile FFMPEG-PHP
cd ~/ffmpeg/ffmpeg-php-0.5.0
phpize
./configure
make
make install

15. Install FFMPEG-PHP (make sure the php.ini path is correct.)
echo ‘extension=/usr/local/lib/php/extensions/ no-debug-non-zts-20020429/ffmpeg.so’ >> /usr/local/Zend/etc/php.ini

16. Restart Apache to load FFMPEG-PHP (Depends on OS, this is for RHEL/CentOS)
service httpd restart

17. Verify if it works
php -r ‘phpinfo();’ | grep ffmpeg

If you get a few lines such as
ffmpeg
ffmpeg support (ffmpeg-php) => enabled
ffmpeg-php version => 0.5.0
ffmpeg.allow_persistent => 0 => 0