/opt/ffmpeg/include/libavutil/pixdesc.h:29:5: warning: type of bit-field ‘plane’ is a GCC extension [-pedantic]
/opt/ffmpeg/include/libavutil/pixdesc.h:35:5: warning: type of bit-field ‘step_minus1’ is a GCC extension [-pedantic]
/opt/ffmpeg/include/libavutil/pixdesc.h:41:5: warning: type of bit-field ‘offset_plus1’ is a GCC extension [-pedantic]
/opt/ffmpeg/include/libavutil/pixdesc.h:42:5: warning: type of bit-field ‘shift’ is a GCC extension [-pedantic]
/opt/ffmpeg/include/libavutil/pixdesc.h:43:5: warning: type of bit-field ‘depth_minus1’ is a GCC extension [-pedantic]