Projets

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Voir discussions

Page de redirect dans wikipedia

#REDIRECT [[Gzip#File format]]{{wikidata-redirect|Q10287816}}{{R to section}}

Il faut d'abord supprimer le redirect, le temps de référencer sur Wikidata. Puis le restaurer en ajoutant le template wikidata-redirect

Voir décision sans implémentation !!!

Suivre l'avancée via

Quelques propriétés

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Software

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Title ID Data type Description Examples Inverse
file extensionP1195Stringfilename extension: filename suffix that indicates the format of the file's contents (e.g. "txt" for a text file). Omit the leading dot.SVG <file extension> svg-
media typeP1163Stringmedia type: IANA-registered identifier for a file typeJPEG <media type> image/jpeg-
developerP178Itemvideo game developer and software developer: organization or person that developed the itemMicrosoft Windows <developer> Microsoft-
readable file formatP1072Itemreadable file format: file format a program can open and readInkscape <readable file format> SVG-
writable file formatP1073Itemwritable file format: file format a program can create and/or write toInkscape <writable file format> SVG-
software version identifierP348Stringsoftware version and version number: numeric or nominal identifier of a version of a software program or file format, current or pastQGIS <software version identifier> 2.0-
software engineP408Itemsoftware engine: software engine employed by the subject itemWikipedia <software engine> MediaWiki-

Information on standards

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How to specify a standard?

Title ID Data type Description Examples Inverse
ISO standardP503External identifierISO standard: numeric identifier of this ISO standardJPEG 2000 <ISO standard> 15444-
RfC IDP892External identifierRequest for Comments: identifier for an item in Request for Comments, a publication of IETF and the Internet Society (without "RFC" prefix)Opus <RfC ID> 6716-
RfC ID with qualifier publication dateP577Point in timepublication date: date or point in time when a work was first published or releasedOpus <RfC ID> 6716
<publication date> septembre 2012
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described at URL with qualifier genreP136Itemgenre, by genre and award for best album (genre): creative work's genre or an artist's field of work (P101). Use main subject (P921) to relate creative works to their topicXML Schema <described at URL> http://www.w3.org/TR/xmlschema-0/
<genre> W3C Recommendation
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described at URL with qualifier standards bodyP1462Itemstandards organization: organisation that published or maintains the standard governing an itemJPEG File Interchange Format, version 1.02 <described at URL> https://www.itu.int/rec/T-REC-T.851-200509-I/en
<standards body> International Telecommunication Union
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How to specify if a file format is proprietary?

The idea is to use proprietary file format (Q2720536) to tell this information either in instance of (P31) or in subclass of (P279)

Title ID Data type Description Examples Inverse
instance ofP31Iteminstance of: that class of which this subject is a particular example and member; different from P279 (subclass of); for example: K2 is an instance of mountain; volcano is a subclass of mountain (and an instance of volcanic landform)ACE <instance of> proprietary file format-
subclass ofP279Itemsubclass of: this item is a subclass (subset) of that item; all instances of this item are instances of that item; different from P31 (instance of), e.g.: volcano is a subclass of mountain (and an instance of volcanic landform); K2 is an instance of mountainPhotoshop File Format <subclass of> proprietary file format-

The inverse is free format (Q8436198), but it could be usefull to specify copyright license (P275) with either a specific licence or public domain (Q19652), free license (Q196294), ...

Query for signature

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The following query uses these:

  • Properties: file format identification pattern (P4152)     , encoding (P3294)     
    SELECT ?item ?itemLabel ?pattern ?encodage ?encodageLabel
    WHERE 
    {
      ?item p:P4152 ?patternStatement.
      ?patternStatement ps:P4152 ?pattern.
      ?patternStatement  pq:P3294 ?encodage.
      SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
      # PRONOM internal signature
      FILTER (str(?encodage) != 'http://www.wikidata.org/entity/Q35432091')
      # HEXA pattern
      #FILTER (str(?encodage) != 'http://www.wikidata.org/entity/Q82828')
      # ASCII pattern
      FILTER (str(?encodage) != 'http://www.wikidata.org/entity/Q8815')
    }
    

Query all RIFF formats

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The following query uses these:

Oric

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Famille Oric

Jeux pour Oric 1

Quelques auteurs

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Quelques formats de fichiers

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?format <nature de l'élément (P31)> <format de données (Q235557)>.

{{Infobox file format
| name 
 Joint Photographic Experts Group
| screenshot = [[File:Felis silvestris silvestris small gradual decrease of quality.png|border|240px]]
| caption = A photo of a cat with the compression rate decreasing, and hence quality increasing, from left to right.
| extension = <tt>.jpg</tt>, <tt>.jpeg</tt>, <tt>.jpe</tt><br /><tt>.jif</tt>, <tt>.jfif</tt>, <tt>.jfi</tt>
| mime = <tt>image/jpeg</tt>
| typecode = <tt>JPEG</tt>
| uniform type = public.jpeg
| owner = [[Joint Photographic Experts Group]]
| genre = [[lossy compression|lossy]] [[image format]]
| container for =
| contained by =
| extended from =
| extended to =
| magic = <tt>ff d8</tt>
| standard = ISO/IEC 10918, ITU-T T.81, ITU-T T.83, ITU-T T.84, ITU-T T.86
}}