步骤如下：
fedora源： rpm -Uh http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
2. ElRepo源（地址：http://elrepo.org/tiki/tiki-index.php）：
导入公钥：rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
导入源：rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm (适用于RHEL-7, SL-7 or CentOS-7)
[[ for RHEL-6, SL-6 or CentOS-6: rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm ]]
3.My RPM repositories for EL (RHEL, CentOS, ScientificLinux etc) (地址：http://li.nux.ro/repos.html)
EL7: yum -y install epel-release && rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm
[[ EL6: yum -y install epel-release && rpm -Uvh http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm ]]
4. yum repolist (用来确定源 epel, elrepo, nux-dextop 是否安装正确)
5. yum -y --enablerepo=nux-dextop install gstreamer-ffmpeg vlc gstreamer-plugins-ugly gstreamer-ffmpeg gstreamer-plugins-bad gstreamer-plugins-ugly ffmpeg libvdpau mpg123 mplayer mplayer-gui gstreamer-plugins-bad-nonfree gstreamer1-libav gstreamer1-plugins-bad-freeworld gstreamer1-plugins-ugly
6. yum install mplayer
7. yum install vlc (安装之后，若有黑影无声或choppy video，须调preference audio 和video setting)
另附源码编译教程：点击