On Fri, 21 May 2010 18:17:56 +0000, Dan Nessett wrote:
On Fri, 21 May 2010 19:32:40 +0200, Platonides wrote:
Dan Nessett wrote:
We are getting a thumbnailer error on a png file of 16 Mpx. This error is: "Error creating thumbnail: Invalid thumbnail parameters". It appears there is an upper bound limitation somewhere, since Wikipedia has a similar problem (e.g., see http://en.wikipedia.org/wiki/ Category:Old_Ordnance_Survey_map_images).
Is this a hard limit due to limitations of Imagemagick or is there a global that controls the upper bound on image size that the thumbnailer can handle?
http://www.mediawiki.org/wiki/Manual:$wgMaxImageArea
ImageMagick isn't limited AFAIK. If it has not enough machine memory, it will start using files as swap (or perhaps the OOM killer gets launched).
Changed the value of $wgMaxImageArea to 2.5e7 and tried again. The error message is eliminated, but the thumbnail is missing (a completely transparent thumbnail is displayed). The base file is a 4kx4k px (15.2 MB) png file. Any idea why Imagemagick fails to produce a valid (600x600 px) thumbnail? If not, any hints how to chase down the problem?
Dan
To see what happens, I tried to convert the file manually from my command line prompt. The command I used was
convert -thumbnail 600x600 International_Space_Station_Space_Shuttle_Atlantis_Sun_Transit_2010.png thumb.png
It worked perfectly.
Might there be a problem related to the long file name?