Install multimedia support on CentOS 6, Scientific Linux 6 or RHEL 6

This howto assumes that you already installed RPMforge. To prevent conflicts and keep it simple, RPMforge is the only extra repostory we will use.

Note: if you did't add yourself to the sudoers, just rund every command of this howto as root, without the sudo prefix. Or follow this tutorial to add yourself to the sudoers.

Install GStreamer packages

Following packages should already be installed by default on a fresh CD or DVD CentOS / Scientific Linux / RHEL 6 install (no need to install RPMforge for this):
sudo yum install gstreamer gstreamer-plugins-base gstreamer-plugins-good gstreamer-plugins-bad-free

Install the GStreamer modules which are available in the RPMForge repository – note that there are quite a few dependencies:
sudo yum install gstreamer-plugins-bad gstreamer-plugins-ugly gstreamer-ffmpeg

Apart of containing decoders, gstreamer-ffmpeg is the plugin Gnome needs to generate thumbnails for the file browser (Nautilus) and the desktop. Find more information on GStreamer modules on the GStreamer website.

Some of the dependencies are no less than ffmpeg (one of the most important codecs), lame, libcdaudio, libdvdread, libmodplug, libmpeg2, libquicktime, mjpegtools, x264 and xvidcore. Most of them are from RPMforge.

Install more codecs for CentOS

Give mplayer a try:
sudo yum install mplayer mplayer-gui

Once again, there are many dependencies for mplayer, among them esound-libs, libcaca (sic!), libvdpau, mpg123 and svgalib.

Finally, take a look at this page if you feel you'll be missing w32codecs.

Add libdvdcss for DVD support

Following packages are available from RPMforge:
sudo yum install libdvdnav libdvdplay lsdvd

The problematic package is libdvdcss, as it is not available through RPMforge. Libdvdcss can be obtained from Livna:
sudo rpm -Uvh http://rpm.livna.org/livna-release.rpm

Alternatively, you can browse Livna to download the package by yourself.

Install VLC Media Player

A Linux installation wouldn't be complete without the King of all Video players, also available through RPMforge (it also has quite a few dependencies):
sudo yum install vlc

That's all! You should now be able to play any media format on CentOS.

By Johannes Eva, 2012
This article has been linked on LXer.com and some more...