Mike Chaney's Tech Corner

I'e had an odd problem when building thumbnails from a particular folder, with QI suddenly quitting without warning or error messages. The "culprit" turned out to be a large .png file (a panorama) of about 60MB. Temporarily removing that from the folder solved the issue. There are other .png files in that folder, including one of about 30MB which QI opened with no problem. Is there an image file size limit, and/or does it affect only .png files?

Regards

John

John,
There is no file size limit until you reach the limit of your computer resources. You will not see that ustil somewhere depending on the computer near 800-900 Mb.
More than likely, something in that PNG file is corrupt or not within parameters.

Fred

Hmmm! I was surprised too, but the "suspect" file was saved in PS CS3 and will open in anything else too, including Paint Shop Pro and Faststone Image Viewer for example. The only one to "spit it out" is QI!

John

Doesn't mean too much if Q spits it out and CS3 doesn't. There are proprietary gizmos in a file saved by CS3 that deviate from what is considered normal.
Examples would be the MAX compatibility setting when saving a PSD. If you don't check that, the psd is unreadable by even Light room.
If you save as a Tif, there are parameters that are available to you, but out of bounds for an acceptable image read according to world standards. (See Byte order and Pixel order).
Viewers do not count as examples of opening files.
Of course, I would love to have that file in my hands, but PNGs are too large to email, unless you want to try the free YOUSENDIT.com
or something like that.
Fred