我想将 ffmpeg 安装到我的 CentOS 7 服务器上，但我不能，它说我们缺少一些库，我无法找到安装它们的位置和方式。
这是我使用的命令，发生了错误：
[root@www13 ~]# yum install ffmpeg -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: www.ftp.ne.jp
* extras: www.ftp.ne.jp
* nux-dextop: mirror.li.nux.ro
* updates: www.ftp.ne.jp
Resolving Dependencies
--> Running transaction check
---> Package ffmpeg.x86_64 0:2.6.8-3.el7.nux will be installed
--> Processing Dependency: ffmpeg-libs(x86-64) = 2.6.8-3.el7.nux for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libswscale.so.3(LIBSWSCALE_3)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libswresample.so.1(LIBSWRESAMPLE_1)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libpostproc.so.53(LIBPOSTPROC_53)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing …