cvQueryFrame

安装opencv2

wget https://github.com/opencv/opencv/archive/2.4.13.6.zip
unzip 2.4.13.6.zip
cd opencv-2.4.13.6

mkdir build
cd build  
cmake ..  
如果报错in-source builds are not allowed
则删除CMakeCache.txt 
rm CMakeCache.txt 

make  
  
https://blog.csdn.net/gwplovekimi/article/details/80545274   处理视频都可以了，以前都是采集自己写 程序员越来越没底层技术了

opencv安装

原文：https://www.cnblogs.com/hshy/p/11964921.html