https://bugzilla.wikimedia.org/show_bug.cgi?id=32868
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Bug #: 32868
Summary: incorrect duplicate EXIF IFD0:Orientation tag handling
Product: MediaWiki
Version: 1.18
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Images and files
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Was there a recent change in EXIF orientation processing on Wikimedia Commons?
Sadly mediawiki rotates files if a duplicate orientation tag (with conflicting
info!) is present at image files.
There was a bug in Apple's iPhoto4 and it seems we have some files from it ;)
input this in google: "Warning: Duplicate Orientation tag in IFD0" → Apple
products.
Example: one tag is 1 and another is 8. mediawiki uses the 8 instead of
ignoring this obvious crap.
GIMP, gthumb do not do this. They apparently only use the tag if there is only
one ;)
Example: https://commons.wikimedia.org/wiki/File:Pol_Roger_pupitre_4.jpg
Or see my upload log of 2011-12-07 and -08
https://commons.wikimedia.org/w/index.php?title=Special%3ALog&type=upload&user=Saibo&page=&year=&month=-1&tagfilter=&hide_patrol_log=1
I have fixed some.
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