[root@localhost]# yum install ffmpeg Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile epel/x86_64/metalink | 7.7 kB 00:00:01 * epel: mirrors.aliyun.com base | 3.6 kB 00:00:00 docker-ce-edge | 3.5 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 3.4 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/3): epel/x86_64/updateinfo | 1.0 MB 00:00:00 (2/3): updates/7/x86_64/primary_db | 3.2 MB 00:00:07 (3/3): epel/x86_64/primary_db | 6.6 MB 00:00:16 No package ffmpeg available. Error: Nothing to do
Q:
CentOS 7 需额外安装扩展源：
wget https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm 2
wget https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-7.noarch.rpm 1
rpm -ivh *.rpm
rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro 2
rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm 2
yum -y install ffmpeg ffmpeg-devel
原文：https://www.cnblogs.com/mengdeep/p/10557906.html