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| -rw-r--r-- | DOCS/tech/nut.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/DOCS/tech/nut.txt b/DOCS/tech/nut.txt index 456c74d8a6..4b6405dc97 100644 --- a/DOCS/tech/nut.txt +++ b/DOCS/tech/nut.txt @@ -844,10 +844,11 @@ info packet types Note: do not forget the timezone "Keywords" "Language" - ISO 639 and ISO 3166 for language/country code - something like "eng" (US English), can be 0 if unknown - and "multi" if several languages - see http://www.loc.gov/standards/iso639-2/englangn.html + An ISO 639-2 (three-letter) language code, optionally followed by an + ISO 3166-1 country code that is separated from the language + code by a hyphen. All codes defined in ISO 639-2 are allowed, + including "und" (Undetermined), "mul" (Multiple languages) + see http://www.loc.gov/standards/iso639-2/ and http://www.din.de/gremien/nas/nabd/iso3166ma/codlstp1/en_listp1.html the language code a demuxer MUST ignore unknown language and country codes instead of |