我想将 ffmpeg 安装到我的 CentOS 7 服务器上，但是我不能，它说我们缺少一些库，我找不到在哪里以及如何安装它们。
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 Dependency: libavutil.so.54(LIBAVUTIL_54)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavresample.so.2(LIBAVRESAMPLE_2)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavformat.so.56(LIBAVFORMAT_56)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavfilter.so.5(LIBAVFILTER_5)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavdevice.so.56(LIBAVDEVICE_56)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavcodec.so.56(LIBAVCODEC_56)(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libvdpau.so.1()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libswscale.so.3()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libswresample.so.1()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libpostproc.so.53()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavutil.so.54()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavresample.so.2()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavformat.so.56()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavfilter.so.5()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavdevice.so.56()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libavcodec.so.56()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libSDL-1.2.so.0()(64bit) for package: ffmpeg-2.6.8-3.el7.nux.x86_64
--> Running transaction check
---> Package SDL.x86_64 0:1.2.15-14.el7 will be installed
---> Package ffmpeg-libs.x86_64 0:2.6.8-3.el7.nux will be installed
--> Processing Dependency: libxvidcore.so.4()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libx265.so.79()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libx264.so.142()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libva.so.1()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libsoxr.so.0()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libmp3lame.so.0()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libfdk-aac.so.1()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libfaac.so.0()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libass.so.5()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
---> Package libavdevice.x86_64 0:2.6.8-3.el7.nux will be installed
--> Processing Dependency: libopenal.so.1()(64bit) for package: libavdevice-2.6.8-3.el7.nux.x86_64
--> Processing Dependency: libdc1394.so.22()(64bit) for package: libavdevice-2.6.8-3.el7.nux.x86_64
---> Package libvdpau.x86_64 0:1.1-2.el7 will be installed
--> Running transaction check
---> Package faac.x86_64 0:1.28-6.0.el7.nux will be installed
---> Package fdk-aac.x86_64 0:0.1.4-1 will be installed
---> Package ffmpeg-libs.x86_64 0:2.6.8-3.el7.nux will be installed
--> Processing Dependency: libass.so.5()(64bit) for package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64
---> Package lame-libs.x86_64 0:3.99.5-2.el7 will be installed
---> Package libavdevice.x86_64 0:2.6.8-3.el7.nux will be installed
--> Processing Dependency: libopenal.so.1()(64bit) for package: libavdevice-2.6.8-3.el7.nux.x86_64
---> Package libdc1394.x86_64 0:2.2.0-4.el7.nux will be installed
---> Package libva.x86_64 0:1.0.16-3.el6 will be installed
--> Processing Dependency: libudev.so.0()(64bit) for package: libva-1.0.16-3.el6.x86_64
---> Package soxr.x86_64 0:0.1.1-2.el7.nux will be installed
---> Package x264-libs.x86_64 0:0.142-11.20141221git6a301b6.el7.nux will be installed
---> Package x265-libs.x86_64 0:1.9-1.el7.nux will be installed
---> Package xvidcore.x86_64 0:1.3.2-5.el7.nux will be installed
--> Finished Dependency Resolution
Error: Package: libva-1.0.16-3.el6.x86_64 (linuxtech)
Requires: libudev.so.0()(64bit)
Error: Package: libavdevice-2.6.8-3.el7.nux.x86_64 (forensics)
Requires: libopenal.so.1()(64bit)
Error: Package: ffmpeg-libs-2.6.8-3.el7.nux.x86_64 (forensics)
Requires: libass.so.5()(64bit)
在哪里以及如何为我的服务器安装 libudev、libopenal、libass？
编辑：只需运行命令@Alexander T 说：
[root@www13 ~]# yum install epel-release
Loaded plugins: fastestmirror, langpacks
PLESK_17_5_3-extras | 2.9 kB 00:00:00
PLESK_17_NGINX | 2.9 kB 00:00:00
PLESK_17_PHP56 | 2.9 kB 00:00:00
PLESK_17_PHP70 | 2.9 kB 00:00:00
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
forensics | 2.9 kB 00:00:00
forensics-splunk | 2.9 kB 00:00:00
linuxtech | 2.6 kB 00:00:00
nux-dextop | 2.9 kB 00:00:00
plesk-migrator | 2.9 kB 00:00:00
plesk-migrator-tp | 2.9 kB 00:00:00
updates | 3.4 kB 00:00:00
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
Package epel-release-7-9.noarch already installed and latest version
Nothing to do
然后重新安装ffmpeg但仍然错误。
答案1
正如@Bert所说，您做的没错，但是这些库应该从EPEL存储库安装。您可以通过命令安装它yum install epel-release，之后依赖性错误就会消失。
这里是从 EPEL 安装的数据包列表（过滤yum输出）：
lame-libs x86_64 3.99.5-8.el7 epel 343 k
libass x86_64 0.13.4-1.el7 epel 92 k
libdc1394 x86_64 2.2.2-3.el7 epel 121 k
libva x86_64 1.2.1-3.el7 epel 68 k
openal-soft x86_64 1.16.0-3.el7 epel 282 k
schroedinger x86_64 1.0.11-4.el7 epel 291 k
soxr x86_64 0.1.2-1.el7 epel 77 k
答案2
尝试这个：
安装 EPEL 发布仓库
yum -y install epel-release
导入 Nux 存储库的 GPG 密钥
rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
安装 NUX 桌面版本 repo
rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm
运行 yum，启用 EPEL 和 Nux 桌面存储库，并安装 ffmpeg
yum -y --enablerepo=epel,nux-dextop install ffmpeg
答案3
安装 nux-dextop 存储库，然后运行 yum install ffmpeg