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c++linuxc++11ffmpegqt4

Using ffmpeg library with Qt framework results in error

When I include:

extern "C" {
#include <libavcodec/avcodec.h>
}

I am getting the error:

undefined reference to QVideoSurfaceFormat::QVideoSurfaceFormat(QSize const&, QVideoFrame::AVPixelFormat, QAbstractVideoBuffer::HandleType)

without the include - build success.

My guess that include brings some defines that breaks QVideoSurfaceFormat defenition.
Have someone faced with the similar issue?

Solution 
  • #define __STDC_CONSTANT_MACROS // to fix #include <stdint.h> issue
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
}

    After reading through stdint.h and related topic in the web, found solution, that works for me:

    #define __STDC_CONSTANT_MACROS