Ubuntu 安装opencv320 报错 error: 'CODEC_FLAG_GLOBAL_HEADER' was not declared in this scope

修改/opt/opencv/opencv-3.2.0/modules/videoio/src/cap_ffmpeg_impl.hpp，顶端添加：

#define AV_CODEC_FLAG_GLOBAL_HEADER (1 << 22)
#define CODEC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER
#define AVFMT_RAWPICTURE 0x0020

保存重新编译即可。

参考：Ubuntu 源码安装opencv320 报错 error: 'CODEC_FLAG_GLOBAL_HEADER' was not declared in this scope_guo_lei_lamant