https://bugzilla.wikimedia.org/show_bug.cgi?id=73602
Bug ID: 73602 Summary: Mirrored EXIF rotations are not applied to thumbnails Product: MediaWiki Version: unspecified Hardware: All OS: All Status: NEW Severity: trivial Priority: Unprioritized Component: File management Assignee: wikibugs-l@lists.wikimedia.org Reporter: gti...@wikimedia.org CC: aarcos.w...@gmail.com, bawolff...@gmail.com, bryan.tongm...@gmail.com, fflo...@wikimedia.org, gti...@wikimedia.org, mtrac...@member.fsf.org Blocks: 31504 Web browser: --- Mobile Platform: --- EXIF allows 8 possible values for the Orientation field: 0°, 90°, 180°, 270°, and the same four for the mirror image of the original. The last four are not used often, but are supported to some degree by the browsers. (See http://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto/ for an overview of support.) MediaWiki ignores mirrored rotations when generating thumbnails - the EXIF information is stripped, and the physical orientation is left unchanged. See [[commons:File:EXIF rotation 90 mirrored.jpg]] for an example (depending on the browser, you might need to open the image directly to see the correct position, or you might not see it at all - Chrome positions it correctly when viewed directly but not when viewed on a page). Obviously this is Priority: No One Cares but filing it anyway for the sake of completeness. -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug. _______________________________________________ Wikibugs-l mailing list Wikibugs-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikibugs-l