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

MetadataMetadata Item Keys AtomLanguage_countA 16-bit integer indicating the number of languages in the array.Language[Language_count]An array of 16-bit integers, defined according to the ISO 639-2/T definition of language codes.Note that:●●●Indexes into the Language List atom are 1-based.Zero (0) is reserved and never used as an index.Currently, there is a limit of 255 languages that may be recorded in a Language List atom.Table 3-2 (page 135) shows an example Language List atom consisting of two language lists with three andtwo languages, respectively.Table 3-2Example Language List atomField SizeFieldField ContentsComment32-bitatom_size26Size of this Language List atom in bytes.32-bitatom_type'lang’32-bitentry_count2Number of language lists.16-bitlanguage_count3Number of languages in language list 1.16-bitlanguage5575Packed ISO code for ‘eng’ (English)16-bitlanguage6721Packed ISO code for ‘fra’ (French)16-bitlanguage4277Packed ISO code for ‘deu’ (German)16-bitlanguage_count2Number of languages in language list 2.16-bitlanguage19969Packed ISO code for ‘spa’ (Spanish)16-bitlanguage16882Packed ISO code for ‘por’ (Portuguese)Metadata Item Keys AtomThe metadata item keys atom holds a list of the metadata keys that may be present in the metadata atom.This list is indexed starting with 1; 0 is a reserved index value. The metadata item keys atom is a full atom withan atom type of ‘keys’.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.135