AV_PICTURE_STRUCTURE_UNKNOWN 4137 extra_lib/include/ffmpeg_android/libavcodec/avcodec.h     AV_PICTURE_STRUCTURE_UNKNOWN,      //< unknown
AV_PICTURE_STRUCTURE_UNKNOWN 4001 extra_lib/include/libavcodec/avcodec.h     AV_PICTURE_STRUCTURE_UNKNOWN,      //< unknown