Error in building opencv with ffmpeg
I installed ffmpeg according to this article. ffmpeg installation was ok. Now I build opencv with ffmpeg support and I have some errors. The errors are
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp::: error: ‘CODEC_FLAG_GLOBAL_HEADER’ was not declared in this scope
c->flags |= CODEC_FLAG_GLOBAL_HEADER;
^
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In function ‘int icv_av_write_frame_FFMPEG(AVFormatContext*, AVStream*, uint8_t*, uint32_t, AVFrame*)’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp::: error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
if (oc->oformat->flags & AVFMT_RAWPICTURE) {
^
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In member function ‘void CvVideoWriter_FFMPEG::close()’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp::: error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
if( (oc->oformat->flags & AVFMT_RAWPICTURE) == )
^
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In member function ‘bool CvVideoWriter_FFMPEG::open(const char*, int, double, int, int, bool)’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp::: error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
^
In file included from /home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg.cpp:::
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In static member function ‘static AVStream* OutputMediaStream_FFMPEG::addVideoStream(AVFormatContext*, AVCodecID, int, int, int, double, AVPixelFormat)’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp::: error: ‘CODEC_FLAG_GLOBAL_HEADER’ was not declared in this scope
c->flags |= CODEC_FLAG_GLOBAL_HEADER;
^
modules/highgui/CMakeFiles/opencv_highgui.dir/build.make:: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.cpp.o' failed
make[]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.cpp.o] Error
CMakeFiles/Makefile2:: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/all' failed
What could be wrong?
My solution is to grep the missing defines (2 in total) from FFmpeg by using grep -r which leads to the following code found in libavcodec/avcodec.h:
#define AV_CODEC_FLAG_GLOBAL_HEADER (1 << 22)
#define CODEC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER
#define AVFMT_RAWPICTURE 0x0020
Copy and paste it to the top of:
opencv-3.3./modules/videoio/src/cap_ffmpeg_impl.hpp
Compile and everything works even with the latest sources.
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