// ffmpeg Header files
#include <libavformat/avformat.h>
#if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
-#include <libavutil/samplefmt.h>
+# include <libavutil/samplefmt.h>
+#else
+# define AV_SAMPLE_FMT_S16 SAMPLE_FMT_S16
#endif
/** Get the audio.