步骤如下：

  1. 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)


 <Ps: mplayer vlc 任选一个就可以了，都是视频播放器，具体哪个好，看个人喜好>

 <Pps：之前尝试源码安装mplayer，各种报错，各种依赖问题，百度出来的答案千变万化，看得人眼花缭乱，不知所云，以上全靠google，经试验可行，如有任何疑问，请google一下 >


  ^_^