Last modified: 2009-12-30 19:04:23 UTC

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Bug 5994 - PNG thumbnails with 64bit depth and transparency display broken
PNG thumbnails with 64bit depth and transparency display broken
Product: MediaWiki
Classification: Unclassified
File management (Other open bugs)
PC All
: Normal normal with 1 vote (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
  Show dependency treegraph
Reported: 2006-05-17 05:29 UTC by Cameron Garnham
Modified: 2009-12-30 19:04 UTC (History)
1 user (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---

Original hi-res image (54.42 KB, image/png)
2006-05-17 05:31 UTC, Cameron Garnham
250px thumbnail of image (28.74 KB, image/png)
2006-05-17 05:31 UTC, Cameron Garnham
Hi-res image converted to 8 bits/color using pngcrush (21.06 KB, image/png)
2006-05-17 08:37 UTC, Ilmari Karonen
250px thumbnail of converted image (29.53 KB, image/png)
2006-05-17 08:38 UTC, Ilmari Karonen

Description Cameron Garnham 2006-05-17 05:29:22 UTC
The thumbnails to Image:Redox_Reminder.png on wikipage Redox turns out broken. 
The error most probably is caused by the conversion from a 64bit depth to an
32bit one.
Comment 1 Cameron Garnham 2006-05-17 05:31:11 UTC
Created attachment 1763 [details]
Original hi-res image
Comment 2 Cameron Garnham 2006-05-17 05:31:54 UTC
Created attachment 1764 [details]
250px thumbnail of image
Comment 3 Ilmari Karonen 2006-05-17 08:35:28 UTC
Nope, I just converted the image to 8 bits/channel and it's still broken. 
Something else is wrong here.
Comment 4 Ilmari Karonen 2006-05-17 08:37:09 UTC
Created attachment 1765 [details]
Hi-res image converted to 8 bits/color using pngcrush
Comment 5 Ilmari Karonen 2006-05-17 08:38:29 UTC
Created attachment 1766 [details]
250px thumbnail of converted image
Comment 6 Ilmari Karonen 2006-05-17 08:45:05 UTC
Resaving in GIMP fixed the issue.  I suspect it may have been related to the
interlacing in the original image.
Comment 7 Cameron Garnham 2006-05-17 08:58:46 UTC
The Original Image was made with Photoshop CS2
Comment 8 Antoine "hashar" Musso (WMF) 2006-05-20 08:13:13 UTC
If it is a bug in a third party software, maybe we can close it ?
Comment 9 Cameron Garnham 2006-05-20 08:20:23 UTC
No the bug is that MediaWiki dose not have full support for PNG images
Comment 10 emddudley 2006-05-24 00:16:24 UTC
I'm pretty sure MediaWiki has nothing to do with this... ImageMagick and your
browser do all of the work.
Comment 11 Guillaume Paumier 2009-12-30 19:04:23 UTC
Closing as invalid since the problem doesn't seem to come from MediaWiki. Feel free to reopen if you encounter a similar issue.

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