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
--
-- Dan Nessett