Interesting discussion. I am just in the process of adding and modifying code from the "BDInfo" tool into the Contribution Assistant. I was surprised to see how many subtitle language entries in that tool are NOT covered in DVDP. If you are interested, here is the correspondence table, in programmese - but if you look at it, you will actually get the idea. All the entries staring with "//" are basically skipped over, not handled by DVDP, so I am forced to translate to "Other".

To understand this, look at the three letter codes, such as "afr". These codes come from the Blu-Ray metadata. This gets translated by DVDPca into "Afrikaans" in order to build a profile. So I think you can get the idea. Remember, all of those that start with "// case" are essentially NOT covered by DVD Profiler, but theoretically could appear in a Blu-Ray metadata.

        public static string DVDPSubtitleName(string code)
        {
            switch (code)
            {
                //case "abk": return "Abkhazian";
                //case "ace": return "Achinese";
                //case "ach": return "Acoli";
                //case "ada": return "Adangme";
                //case "aar": return "Afar";
                //case "afh": return "Afrihili";
                case "afr": return "Afrikaans";
                //case "afa": return "Afro-Asiatic (Other)";
                //case "aka": return "Akan";
                //case "akk": return "Akkadian";
                //case "alb": return "Albanian";
                //case "sqi": return "Albanian";
                //case "ale": return "Aleut";
                //case "alg": return "Algonquian languages";
                //case "tut": return "Altaic (Other)";
                //case "amh": return "Amharic";
                //case "apa": return "Apache languages";
                case "ara": return "Arabic";
                //case "arc": return "Aramaic";
                //case "arp": return "Arapaho";
                //case "arn": return "Araucanian";
                //case "arw": return "Arawak";
                //case "arm": return "Armenian";
                //case "hye": return "Armenian";
                //case "art": return "Artificial (Other)";
                //case "asm": return "Assamese";
                //case "ath": return "Athapascan languages";
                //case "aus": return "Australian languages";
                //case "map": return "Austronesian (Other)";
                //case "ava": return "Avaric";
                //case "ave": return "Avestan";
                //case "awa": return "Awadhi";
                //case "aym": return "Aymara";
                //case "aze": return "Azerbaijani";
                //case "ban": return "Balinese";
                //case "bat": return "Baltic (Other)";
                //case "bal": return "Baluchi";
                //case "bam": return "Bambara";
                //case "bai": return "Bamileke languages";
                //case "bad": return "Banda";
                //case "bnt": return "Bantu (Other)";
                //case "bas": return "Basa";
                //case "bak": return "Bashkir";
                //case "baq": return "Basque";
                //case "eus": return "Basque";
                //case "btk": return "Batak (Indonesia)";
                //case "bej": return "Beja";
                //case "bel": return "Belarusian";
                //case "bem": return "Bemba";
                //case "ben": return "Bengali";
                //case "ber": return "Berber (Other)";
                //case "bho": return "Bhojpuri";
                //case "bih": return "Bihari";
                //case "bik": return "Bikol";
                //case "bin": return "Bini";
                //case "bis": return "Bislama";
                //case "bos": return "Bosnian";
                //case "bra": return "Braj";
                //case "bre": return "Breton";
                //case "bug": return "Buginese";
                case "bul": return "Bulgarian";
                //case "bua": return "Buriat";
                //case "bur": return "Burmese";
                //case "mya": return "Burmese";
                //case "cad": return "Caddo";
                //case "car": return "Carib";
                //case "cat": return "Catalan";
                //case "cau": return "Caucasian (Other)";
                //case "ceb": return "Cebuano";
                //case "cel": return "Celtic (Other)";
                //case "cai": return "Central American Indian (Other)";
                //case "chg": return "Chagatai";
                //case "cmc": return "Chamic languages";
                //case "cha": return "Chamorro";
                //case "che": return "Chechen";
                //case "chr": return "Cherokee";
                //case "chy": return "Cheyenne";
                //case "chb": return "Chibcha";
                case "chi": return "Chinese";
                case "zho": return "Chinese";
                //case "chn": return "Chinook jargon";
                //case "chp": return "Chipewyan";
                //case "cho": return "Choctaw";
                //case "chu": return "Church Slavic";
                //case "chk": return "Chuukese";
                //case "chv": return "Chuvash";
                //case "cop": return "Coptic";
                //case "cor": return "Cornish";
                //case "cos": return "Corsican";
                //case "cre": return "Cree";
                //case "mus": return "Creek";
                //case "crp": return "Creoles and pidgins (Other)";
                //case "cpe": return "Creoles and pidgins,";
                //case "cpf": return "Creoles and pidgins,";
                //case "cpp": return "Creoles and pidgins,";
                case "scr": return "Croatian";
                case "hrv": return "Croatian";
                //case "cus": return "Cushitic (Other)";
                case "cze": return "Czech";
                case "ces": return "Czech";
                //case "dak": return "Dakota";
                case "dan": return "Danish";
                //case "day": return "Dayak";
                //case "del": return "Delaware";
                //case "din": return "Dinka";
                //case "div": return "Divehi";
                //case "doi": return "Dogri";
                //case "dgr": return "Dogrib";
                //case "dra": return "Dravidian (Other)";
                //case "dua": return "Duala";
                case "dut": return "Dutch";
                case "nld": return "Dutch";
                case "dum": return "Dutch";//, Middle (ca. 1050-1350)";
                //case "dyu": return "Dyula";
                //case "dzo": return "Dzongkha";
                //case "efi": return "Efik";
                //case "egy": return "Egyptian (Ancient)";
                //case "eka": return "Ekajuk";
                //case "elx": return "Elamite";
                case "eng": return "English";
                case "enm": return "English";//, Middle (1100-1500)";
                case "ang": return "English";//, Old (ca.450-1100)";
                //case "epo": return "Esperanto";
                //case "est": return "Estonian";
                //case "ewe": return "Ewe";
                //case "ewo": return "Ewondo";
                //case "fan": return "Fang";
                //case "fat": return "Fanti";
                //case "fao": return "Faroese";
                // No Blu-Ray code for "Farsi" ?
                //case "fij": return "Fijian";
                case "fin": return "Finnish";
                //case "fiu": return "Finno-Ugrian (Other)";
                //case "fon": return "Fon";
                case "fre": return "French";
                case "fra": return "French";
                case "frm": return "French";//, Middle (ca.1400-1600)";
                case "fro": return "French";//, Old (842-ca.1400)";
                //case "fry": return "Frisian";
                //case "fur": return "Friulian";
                //case "ful": return "Fulah";
                //case "gaa": return "Ga";
                //case "glg": return "Gallegan";
                //case "lug": return "Ganda";
                //case "gay": return "Gayo";
                //case "gba": return "Gbaya";
                //case "gez": return "Geez";
                case "geo": return "Georgian";
                case "kat": return "Georgian";
                case "ger": return "German";
                case "deu": return "German";
                //case "nds": return "Saxon";
                case "gmh": return "German";//, Middle High (ca.1050-1500)";
                case "goh": return "German";//, Old High (ca.750-1050)";
                case "gem": return "German";//ic (Other)";
                //case "gil": return "Gilbertese";
                //case "gon": return "Gondi";
                //case "gor": return "Gorontalo";
                //case "got": return "Gothic";
                //case "grb": return "Grebo";
                case "grc": return "Greek";//, Ancient (to 1453)";
                case "gre": return "Greek";
                case "ell": return "Greek";
                //case "grn": return "Guarani";
                //case "guj": return "Gujarati";
                //case "gwi": return "Gwich´in";
                //case "hai": return "Haida";
                //case "hau": return "Hausa";
                //case "haw": return "Hawaiian";
                case "heb": return "Hebrew";
                //case "her": return "Herero";
                //case "hil": return "Hiligaynon";
                //case "him": return "Himachali";
                case "hin": return "Hindi";
                //case "hmo": return "Hiri Motu";
                //case "hit": return "Hittite";
                //case "hmn": return "Hmong";
                case "hun": return "Hungarian";
                //case "hup": return "Hupa";
                //case "iba": return "Iban";
                case "ice": return "Icelandic";
                case "isl": return "Icelandic";
                //case "ibo": return "Igbo";
                //case "ijo": return "Ijo";
                //case "ilo": return "Iloko";
                //case "inc": return "Indic (Other)";
                //case "ine": return "Indo-European (Other)";
                //case "ind": return "Indonesian";
                //case "ina": return "Interlingua (International";
                //case "ile": return "Interlingue";
                //case "iku": return "Inuktitut";
                //case "ipk": return "Inupiaq";
                //case "ira": return "Iranian (Other)";
                //case "gle": return "Irish";
                //case "mga": return "Irish, Middle (900-1200)";
                //case "sga": return "Irish, Old (to 900)";
                //case "iro": return "Iroquoian languages";
                case "ita": return "Italian";
                case "jpn": return "Japanese";
                case "jav": return "Javanese";
                //case "jrb": return "Judeo-Arabic";
                //case "jpr": return "Judeo-Persian";
                //case "kab": return "Kabyle";
                //case "kac": return "Kachin";
                //case "kal": return "Kalaallisut";
                //case "kam": return "Kamba";
                //case "kan": return "Kannada";
                //case "kau": return "Kanuri";
                //case "kaa": return "Kara-Kalpak";
                //case "kar": return "Karen";
                //case "kas": return "Kashmiri";
                //case "kaw": return "Kawi";
                //case "kaz": return "Kazakh";
                //case "kha": return "Khasi";
                //case "khm": return "Khmer";
                //case "khi": return "Khoisan (Other)";
                //case "kho": return "Khotanese";
                //case "kik": return "Kikuyu";
                //case "kmb": return "Kimbundu";
                //case "kin": return "Kinyarwanda";
                //case "kir": return "Kirghiz";
                //case "kom": return "Komi";
                //case "kon": return "Kongo";
                //case "kok": return "Konkani";
                case "kor": return "Korean";
                //case "kos": return "Kosraean";
                //case "kpe": return "Kpelle";
                //case "kro": return "Kru";
                //case "kua": return "Kuanyama";
                //case "kum": return "Kumyk";
                //case "kur": return "Kurdish";
                //case "kru": return "Kurukh";
                //case "kut": return "Kutenai";
                //case "lad": return "Ladino";
                //case "lah": return "Lahnda";
                //case "lam": return "Lamba";
                //case "lao": return "Lao";
                //case "lat": return "Latin";
                //case "lav": return "Latvian";
                //case "ltz": return "Letzeburgesch";
                //case "lez": return "Lezghian";
                //case "lin": return "Lingala";
                //case "lit": return "Lithuanian";
                //case "loz": return "Lozi";
                //case "lub": return "Luba-Katanga";
                //case "lua": return "Luba-Lulua";
                //case "lui": return "Luiseno";
                //case "lun": return "Lunda";
                //case "luo": return "Luo (Kenya and Tanzania)";
                //case "lus": return "Lushai";
                //case "mac": return "Macedonian";
                //case "mkd": return "Macedonian";
                //case "mad": return "Madurese";
                //case "mag": return "Magahi";
                //case "mai": return "Maithili";
                //case "mak": return "Makasar";
                //case "mlg": return "Malagasy";
                //case "may": return "Malay";
                //case "msa": return "Malay";
                //case "mal": return "Malayalam";
                //case "mlt": return "Maltese";
                //case "mnc": return "Manchu";
                //case "mdr": return "Mandar";
                //case "man": return "Mandingo";
                //case "mni": return "Manipuri";
                //case "mno": return "Manobo languages";
                //case "glv": return "Manx";
                //case "mao": return "Maori";
                //case "mri": return "Maori";
                //case "mar": return "Marathi";
                //case "chm": return "Mari";
                //case "mah": return "Marshall";
                //case "mwr": return "Marwari";
                //case "mas": return "Masai";
                //case "myn": return "Mayan languages";
                //case "men": return "Mende";
                //case "mic": return "Micmac";
                //case "min": return "Minangkabau";
                //case "mis": return "Miscellaneous languages";
                //case "moh": return "Mohawk";
                //case "mol": return "Moldavian";
                //case "mkh": return "Mon-Khmer (Other)";
                //case "lol": return "Mongo";
                //case "mon": return "Mongolian";
                //case "mos": return "Mossi";
                //case "mul": return "Multiple languages";
                //case "mun": return "Munda languages";
                //case "nah": return "Nahuatl";
                //case "nau": return "Nauru";
                //case "nav": return "Navajo";
                //case "nde": return "Ndebele, North";
                //case "nbl": return "Ndebele, South";
                //case "ndo": return "Ndonga";
                //case "nep": return "Nepali";
                //case "new": return "Newari";
                //case "nia": return "Nias";
                //case "nic": return "Niger-Kordofanian (Other)";
                //case "ssa": return "Nilo-Saharan (Other)";
                //case "niu": return "Niuean";
                //case "non": return "Norse, Old";
                //case "nai": return "North American Indian (Other)";
                //case "sme": return "Northern Sami";
                case "nor": return "Norwegian";
                case "nob": return "Norwegian";// Bokmål";
                case "nno": return "Norwegian";// Nynorsk";
                //case "nub": return "Nubian languages";
                //case "nym": return "Nyamwezi";
                //case "nya": return "Nyanja";
                //case "nyn": return "Nyankole";
                //case "nyo": return "Nyoro";
                //case "nzi": return "Nzima";
                //case "oci": return "Occitan";
                //case "oji": return "Ojibwa";
                //case "ori": return "Oriya";
                //case "orm": return "Oromo";
                //case "osa": return "Osage";
                //case "oss": return "Ossetian";
                //case "oto": return "Otomian languages";
                //case "pal": return "Pahlavi";
                //case "pau": return "Palauan";
                //case "pli": return "Pali";
                //case "pam": return "Pampanga";
                //case "pag": return "Pangasinan";
                //case "pan": return "Panjabi";
                //case "pap": return "Papiamento";
                //case "paa": return "Papuan (Other)";
                //case "per": return "Persian";
                //case "fas": return "Persian";
                //case "peo": return "Persian, Old (ca.600-400 B.C.)";
                //case "phi": return "Philippine (Other)";
                //case "phn": return "Phoenician";
                //case "pon": return "Pohnpeian";
                case "pol": return "Polish";
                case "por": return "Portuguese";
                //case "pra": return "Prakrit languages";
                //case "pro": return "Provençal";
                //case "pus": return "Pushto";
                //case "que": return "Quechua";
                //case "roh": return "Raeto-Romance";
                //case "raj": return "Rajasthani";
                //case "rap": return "Rapanui";
                //case "rar": return "Rarotongan";
                //case "roa": return "Romance (Other)";
                case "rum": return "Romanian";
                case "ron": return "Romanian";
                //case "rom": return "Romany";
                //case "run": return "Rundi";
                case "rus": return "Russian";
                //case "sal": return "Salishan languages";
                //case "sam": return "Samaritan Aramaic";
                //case "smi": return "Sami languages (Other)";
                //case "smo": return "Samoan";
                //case "sad": return "Sandawe";
                //case "sag": return "Sango";
                //case "san": return "Sanskrit";
                //case "sat": return "Santali";
                //case "srd": return "Sardinian";
                //case "sas": return "Sasak";
                //case "sco": return "Scots";
                //case "gla": return "Gaelic";
                //case "sel": return "Selkup";
                //case "sem": return "Semitic (Other)";
                //case "scc": return "Serbian";
                //case "srp": return "Serbian";
                //case "srr": return "Serer";
                //case "shn": return "Shan";
                //case "sna": return "Shona";
                //case "sid": return "Sidamo";
                //case "sgn": return "Sign languages";
                //case "bla": return "Siksika";
                //case "snd": return "Sindhi";
                //case "sin": return "Sinhalese";
                //case "sit": return "Sino-Tibetan (Other)";
                //case "sio": return "Siouan languages";
                //case "den": return "Slave (Athapascan)";
                //case "sla": return "Slavic (Other)";
                case "slo": return "Slovakian";
                case "slk": return "Slovakian";
                case "slv": return "Slovenian";
                //case "sog": return "Sogdian";
                //case "som": return "Somali";
                //case "son": return "Songhai";
                //case "snk": return "Soninke";
                //case "wen": return "Sorbian languages";
                //case "nso": return "Sotho, Northern";
                //case "sot": return "Sotho, Southern";
                //case "sai": return "South American Indian (Other)";
                case "spa": return "Spanish";
                //case "suk": return "Sukuma";
                //case "sux": return "Sumerian";
                //case "sun": return "Sundanese";
                //case "sus": return "Susu";
                //case "swa": return "Swahili";
                //case "ssw": return "Swati";
                case "swe": return "Swedish";
                //case "syr": return "Syriac";
                case "tgl": return "Tagalog";
                //case "tah": return "Tahitian";
                //case "tai": return "Tai (Other)";
                //case "tgk": return "Tajik";
                //case "tmh": return "Tamashek";
                //case "tam": return "Tamil";
                //case "tat": return "Tatar";
                //case "tel": return "Telugu";
                //case "ter": return "Tereno";
                //case "tet": return "Tetum";
                case "tha": return "Thai";
                //case "tib": return "Tibetan";
                //case "bod": return "Tibetan";
                //case "tig": return "Tigre";
                //case "tir": return "Tigrinya";
                //case "tem": return "Timne";
                //case "tiv": return "Tiv";
                //case "tli": return "Tlingit";
                //case "tpi": return "Tok Pisin";
                //case "tkl": return "Tokelau";
                //case "tog": return "Tonga (Nyasa)";
                //case "ton": return "Tonga (Tonga Islands)";
                //case "tsi": return "Tsimshian";
                //case "tso": return "Tsonga";
                //case "tsn": return "Tswana";
                //case "tum": return "Tumbuka";
                case "tur": return "Turkish";
                case "ota": return "Turkish";//, Ottoman (1500-1928)";
                //case "tuk": return "Turkmen";
                //case "tvl": return "Tuvalu";
                //case "tyv": return "Tuvinian";
                //case "twi": return "Twi";
                //case "uga": return "Ugaritic";
                //case "uig": return "Uighur";
                //case "ukr": return "Ukrainian";
                //case "umb": return "Umbundu";
                //case "und": return "Undetermined";
                //case "urd": return "Urdu";
                //case "uzb": return "Uzbek";
                //case "vai": return "Vai";
                //case "ven": return "Venda";
                //case "vie": return "Vietnamese";
                //case "vol": return "Volapük";
                //case "vot": return "Votic";
                //case "wak": return "Wakashan languages";
                //case "wal": return "Walamo";
                //case "war": return "Waray";
                //case "was": return "Washo";
                //case "wel": return "Welsh";
                //case "cym": return "Welsh";
                //case "wol": return "Wolof";
                case "xho": return "Xhosa";
                //case "sah": return "Yakut";
                //case "yao": return "Yao";
                //case "yap": return "Yapese";
                //case "yid": return "Yiddish";
                //case "yor": return "Yoruba";
                //case "ypk": return "Yupik languages";
                //case "znd": return "Zande";
                //case "zap": return "Zapotec";
                //case "zen": return "Zenaga";
                //case "zha": return "Zhuang";
                case "zul": return "Zulu";
                //case "zun": return "Zuni";
                // No "Commentary"
                // No "Trivia"
                default: return "Other";
            }
        }

Just found another one: We differentiate between Slovene/Slovenian and the distantly-related Slovak/Slovakian in subtitles, but not in audio. Confusion is likely as the native names for both languages are near-identical as both mean "Slavic."

Also, Valencian shouldn't be listed. From the Wikipedia article on the Catalan language:

Quote:
The official language academy of the Valencian Community (the Acadèmia Valenciana de la Llengua) considers Catalan and Valencian simply to be two names for the same language.

It's a minor dialect difference. The non-Valencian version doesn't even have a special name from what I can tell.