@classmethod
def _is_non_Exif_APP1_segment(cls, stream, offset):
    "\n        Return True if the APP1 segment at *offset* in *stream* is NOT an\n        Exif segment, as determined by the ``'Exif\x00\x00'`` signature at\n        offset 2 in the segment.\n        "
    stream.seek(offset + 2)
    exif_signature = stream.read(6)
    return exif_signature != b'Exif\x00\x00'
