def METHOD_NAME(self, frame_number):
    frame_number_ = int(frame_number)
    if frame_number_ < 0 or frame_number_ >= self._db_data.size:
        raise ValidationError('Incorrect requested frame number: {}'.format(frame_number_))
    chunk_number = frame_number_ // self._db_data.chunk_size
    frame_offset = frame_number_ % self._db_data.chunk_size
    return frame_number_, chunk_number, frame_offset