ffmpeg使用yum找不到

[qqboyseafile]

for Centos 7

[root@seafile6 ~]# yum -y install ffmpeg ffmpeg-devel
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile

• base: mirrors.yun-idc.com
• epel: mirror.premi.st
• extras: mirrors.cn99.com
• updates: mirrors.cn99.com
  No package ffmpeg available.
  No package ffmpeg-devel available.
  Error: Nothing to do

[qqboyseafile]

解决了。
CentOS 7需额外安装扩展源：
wget https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm
wget https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-7.noarch.rpm
rpm -ivh *.rpm
rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm
yum -y install ffmpeg ffmpeg-devel