1) Pre-requisite

First of all you should have install rpm-devel and rpm-build rpms from your distro repository. Confirm it using following command

rpm -qa | grep rpm

rpm-4.3.3-26
rpm-devel-4.3.3-26
rpm-python-4.3.3-26
redhat-rpm-config-8.0.32.1-4
rpmdb-CentOS-4.7-0.20080805
rpm-libs-4.3.3-26
rpm-build-4.3.3-26

If you see required rpms in the list then you are good to go with source rpm compilation, else you have to install required rpms.

yum -y install rpm-build rpm-devel

or

rpm -ivh /path/rpm-build* /path/rpm-devel*

The rpm-build and rpm-devel also build following directories for source rpm compilations.

/usr/src/redhat/{BUILD,RPMS,SOURCES,SPECS,SRPMS}

2) Compiling the source

Get your source rpm which you need to compile.  Here i will get the ffmpeg source rpm from http://dag.wieers.com/rpm/packages/ffmpeg/ because i need to add libamr-nb and libamr-wb support for converting 3gp clips.

wget http://dag.wieers.com/rpm/packages/ffmpeg/ffmpeg-0.4.9-0.9.20070530.rf.src.rpm

rpm -ivh ffmpeg-0.4.9-0.9.20070530.rf.src.rpm

It will install source files tar.gz, patch files in

/usr/src/redhat/SOURCES

and spec file in

/usr/src/redhat/SPECS

I have to add –with-libamrnb and –with-libamrwb in ./configure command specified in ffmpeg.spec and you can edit whatever you are going to change/edit.

After editing now compile the sources and generate rpm using spec file.

cd /usr/src/redhat/SPECS

rpmbuild -bb ffmpeg.spec

The above command will apply patches if any and compile the source and generate rpm under /usr/src/redhat/RPMS sub-directories regarding to your architecture i.e

/usr/src/redhat/RPMS/i386 for i386,i686

/usr/src/redhat/RPMS/x86_64 for x86_64 etc.

While compiling you will see the verbose output of compilation and you should see clean compilation with notifying of generating rpm at the end.

1 Setting Up RPMForge Respository.

RPMForge repository (http://dag.wieers.com) is the biggest rpm respository for RHEL, CentOS for all versions. To enable RPMForge respository run following command to install all necessary files for getting RPMForge repository. The following command directly install rpm from http://da.wieers.com site.

For i386/i686

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

For x86_64

rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS//rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

This rpm will add necessary files in our repository configuration and can be viewed at /etc/yum.repos.d/rpmforge.repo

2 Install ffmpeg, mplayer, mencoder with all supported modules.

Now we have rpmforge repository, so we will use yum to install ffmpeg, mplayer, mencoder as well as all dependent software.

yum -y install ffmpeg ffmpeg-devel mplayer mencoder flvtool2

This command will some time to download and install all packages depends on your internet speed.

3 Install FFMPEG-PHP

ffmpeg-php is an extension for PHP that adds an easy to use, object-oriented API for accessing and retrieving information from video and audio files. ffmpeg-devel and php-devel is needed to compile ffmpeg-php from source code. Use following steps to install ffmpeg-php

cd /usr/src
wget http://garr.dl.sourceforge.net/sourceforge/ffmpeg-php/ffmpeg-php-0.6.0.tbz2
tar jxvf ffmpeg-php-0.6.0.tbz2
cd ffmpeg-php-0.6.0
phpize
./configure
make
make install

It will copy the ffmpeg.so module in php default module location. Now you have to edit php.ini file to enable ffmpeg-php support in it by using ffmpeg.so module.

vi /etc/php.ini

and append following line

extension=ffmpeg.so

Restart apache service to take effect of php.ini

/etc/init.d/httpd restart

Run following command to ffmpeg module listing in php.

php -m | grep ffmpeg

Have a nice streaming.