Quicktime File Format (2012-08-14).pdf

MetadataLocale IndicatorValueotherwiseMeaningThe value is an ISO 3166 code (for the country code) or a packed ISO 639-2/T code (forthe language).Note that both ISO 3166 and ISO 639-2/T codes have a nonzero value in their top byte, and so will have a value> 255.Software applications that read metadata may be customized for a specific set of countries or languages. If ametadata writer does not want to limit a metadata item to a specific set of countries, it should use the reservedvalue ZZ from ISO 3166 as its country code. Similarly if the metadata writer does not want to limit the user’slanguage (this is not recommended) it uses the value ‘und’ (undetermined) from the ISO 639-2/T specification.A software application matches a country code if either (a) the value to be matched to is 0 (default) or (b) thecodes are equal. A software application matches to a list of codes if its value is a member of that list. A softwareapplication matches to a locale if both country and language match.Table 3-4 (page 140) shows some example metadata tags.Table 3-4Example metadata tagsCountry0GBCADE,GB,FR,ITDE,GB,FR,IT0Languageeng0fra0deu,fra0MeaningAll speakers of English, regardless of countryAll people in the United Kingdom, regardless of languageFrench speakers in CanadaPeople in Germany, France, United Kingdom, and Italy, regardless oflanguagePeople in Germany, France, United Kingdom, and Italy, who speakGerman or FrenchDefault, all speakers in all countriesTo reiterate, if the country_indicator value is in the range 1 to 255, it is interpreted as the 1-based index for acountry list in the Country Language atom in the Metadata atom. If the language_indicator value is in therange 1 to 255, it is interpreted as the 1-based index for a language list in the Language List atom in theMetadata atom. Otherwise, the country_indicator or language_indicator is unspecified (0) or holds the immediatevalue for a single country or language.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.140