Ubuntu 12.04下安装opencv3.0遇到的问题

1、make时出现关于ffmpeg错误

In file included from /home/vonzhou/Downloads/opencv-3.0.0-rc1/modules/videoio/src/cap_ffmpeg_impl.hpp:65:0,

from /home/vonzhou/Downloads/opencv-3.0.0-rc1/modules/videoio/src/cap_ffmpeg.cpp:45:

/home/vonzhou/Downloads/opencv-3.0.0-rc1/modules/videoio/src/ffmpeg_codecs.hpp:171:7: error:‘AV_CODEC_ID_H263I’
was not declared in this scope

/home/vonzhou/Downloads/opencv-3.0.0-rc1/modules/videoio/src/ffmpeg_codecs.hpp:287:7: error: ‘AV_CODEC_ID_WNV1’ was not declared in this scope

make[2]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o] Error 1

该报错的原因是因为opencv源码里本来有bug，需要对opencv的源码进行更改，附上链接：

点击打开链接

具体的操作是,如果你用的是opencv3.0.0版本，那么修改文件

opencv-3.0.0/modules/videoio/src/cap_ffmpeg_impl.hpp，

除了在#define定义的后面的那个以外，把剩下所有的AVCodecID用CV_CODEC_ID替换。