Add support for JPEG 2000 images
Closed, DeclinedPublic

Description

Author: broken.arrow

Description:
Image files with MIME-type image/jpeg2000 are not thumbnailed.

See also http://commons.wikimedia.org/wiki/Image:GT49.jpg

Both files can be read fine e.g. with Corel Photo-Paint 11.

This may be an imagemagick issue related to the jasper version installed on WMF sites, hence the shell keyword.


Version: 1.12.x
Severity: enhancement
URL: http://commons.wikimedia.org/wiki/Image:VIC_2_SECTION_%28Converted%29-1.jpg

bzimport added a subscriber: Unknown Object (MLST).
bzimport set Reference to bz11871.
bzimport created this task.Via LegacyNov 4 2007, 11:33 PM
brion added a comment.Via ConduitDec 5 2007, 8:03 PM

JPEG 2000 files should be uploaded as .jp2 or .j2k, not .jpg or .jpeg, as it's a different format from JPEG/JFIF.

Currently we don't support JPEG 2000 in MediaWiki, so functionality of such files will be hit-or-miss at best. (Nor do most browsers support it.)

hashar added a comment.Via ConduitAug 29 2008, 10:45 PM

Maybe we can render them as jpg using ImageMagick ?

bzimport added a comment.Via ConduitMar 19 2009, 6:03 PM

mike.lifeguard+bugs wrote:

Removed shell keyword as it seems there's nothing to do on shell.

Tgr added a comment.Via ConduitMay 11 2009, 11:46 PM

If the software cannot support JPEG 2000 images, why is uploading them permitted? It just confuses users, they think it's their fault that it does not show up.

Also, the image/jp2 mime type is currently not recognized, thus [[MediaWiki:Mediawarning]] is shown on the description page, confusing users even further.

brion added a comment.Via ConduitMay 12 2009, 12:57 AM

They're not permitted. They have a different file type extension which is not whitelisted, and should be recognized as a different file type which would not be uploadable on a wiki with default or Wikimedia's configuration.

The filtering appears to be a bit lax somewhere, though, since they apparently can get through if you mislabel the file extension.

I took the originally-referenced file and re-uploaded it to test for a sample: http://test.wikipedia.org/wiki/File:A_JPEG_2000_file.jpg

It's being correctly detected as image/jp2, but this shouldn't make it past upload...

brion added a comment.Via ConduitMay 15 2009, 12:14 AM

I'm closing this in case we really do want to add JPEG 2000 support in the future it can be reopened. :)

Bug 18803 now covers the uploading bug where you can upload the files as .jpg (at which point of course they don't work).

Gilles added a project: Multimedia.Via WebDec 4 2014, 10:55 AM
Gilles moved this task to Closed on the Multimedia workboard.Via WebDec 4 2014, 10:59 AM
reubot added a subscriber: reubot.Via WebFeb 14 2015, 12:26 PM

Add Comment