opencv c++ 错误汇总

opencv3和opencv4的版本 问题：

1. opencv3和opencv4的版本切换：https://blog.csdn.net/weixin_45807759/article/details/129099042

2. ‘CV_CAP_PROP_FRAME_WIDTH’ was not declared in this scope

改为： CAP_PROP_FRAME_WIDTH CAP_PROP_FRAME_HEIGHT