libopencv_core.so.2.4: cannot open shared object file: Depends: libopencv-photo2.4v5

1. 问题现象

在使用 ffmpeg 报错误如下：

ffmpeg: error while loading shared libraries: libopencv_core.so.2.4:
cannot open shared object file: No such file or directory

按照网上说的方法发现，在 /usr/local/lib 目录下并没有 libopencv_ 开头

wohu@ubuntu:/usr/local/lib$ ls
libcublas.so.8.0  libcudnn.so.6     python2.7
libcudart.so.8.0  libcurand.so.8.0  python3.5

2. 解决方法

使用 apt-get 命令安装 python-opencv

sudo apt-get install python-opencv

出现依赖错误：

The following packages have unmet dependencies:python-opencv : Depends: libopencv-photo2.4v5 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

换一种方法使用 aptitude 安装，问题得以解决：

sudo aptitude install python-opencv

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libopencv_core.so.2.4: cannot open shared object file: Depends: libopencv-photo2.4v5

1. 问题现象

2. 解决方法

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