hecate生成视频好看的缩略图

生成视频的缩略图

• 使用了雅虎的hecate，对于长的视频非常慢

Install opencv in centOS

# 下载并安装OpenCV
yum install libdc1934-devel libv4l-devel libtiff-devel libjpeg-devel tbb tbb-devel
yum groupinstall "Development Tools" -y
yum install cmake gcc gtk2-devel numpy pkconfig -y

cd /data/zhuyaguang/soft
# 这里可以使用git clone opencv的最新的源代码，经测试4.0以上版本暂时不ok，3.4版本ok
wget https://github.com/opencv/opencv/archive/3.3.0.zip
unzip 3.3.0.zip

cd opencv-3.3.0
mkdir build
cd build

cmake -DWITH_LIBV4L=ON ..    ## (this is important)
cmake -D CMAKE_BUILD_TYPE=DEBUG -D CMAKE_INSTALL_PREFIX=/usr/local ..
make && make install

export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig/
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/opencv/lib
echo '/usr/local/lib/' >> /etc/ld.so.conf.d/opencv.conf
ldconfig

安装 ffmpeg

yum install ffmpeg

安装hecate

https://github.com/yahoo/hecate

参考文章

• ubuntu安装OpenCV: https://blog.youkuaiyun.com/cocoaqin/article/details/78163171
• centOS7安装OpenCV:https://www.vultr.com/docs/how-to-install-opencv-on-centos-7
• 对应的论文：https://arxiv.org/pdf/1609.01388.pdf