class DefaultExtractor:
    """Extractor that provides default fallback values"""

    def extract_title(self):
        return "Unknown Title"

    def extract_year(self):
        return None

    def extract_source(self):
        return None

    def extract_order(self):
        return None

    def extract_resolution(self):
        return None

    def extract_hdr(self):
        return None

    def extract_movie_db(self):
        return None

    def extract_audio_langs(self):
        return None

    def extract_meta_type(self):
        return None

    def extract_size(self):
        return None

    def extract_modification_time(self):
        return None

    def extract_file_name(self):
        return None

    def extract_file_path(self):
        return None

    def extract_frame_class(self):
        return None

    def extract_video_tracks(self):
        return []

    def extract_audio_tracks(self):
        return []

    def extract_subtitle_tracks(self):
        return []