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large image conversion problem

Posted: 2006-06-19T18:05:23-07:00
by chanoy

I want to convert some large images into ppm/pgm format. However, I encounter the following problem:

C:\Program Files\ImageMagick-6.2.6-Q16>convert balloon.jpg balloon.ppm
convert: unable to extend cache `balloon.jpg': No such file or directory.
convert: Application transferred too few scanlines `balloon.jpg'.

On smaller images, it works fine. balloon.jpg is a 16000x12000 24BPP image. It's about 7mbs in size.

Thanks for any help,

Posted: 2006-06-19T18:58:36-07:00
by magick
We have a lightweight program to convert large images we're getting ready to release, but in the mean-time ImageMagick requires copious amounts of disk space to process large images. It's possible you are running out of disk space or you are running on a FATS disk and ImageMagick wants to create a temporary disk file greater than 4GB. For that you need NTFS.

Posted: 2006-06-20T12:31:38-07:00
by chanoy
Thanks for the quick reply.
When is the expected release date for the lightweight program?

Posted: 2006-06-20T13:06:48-07:00
by magick
The program is called stream and we're not sure when it will be released, perhaps in a month or two. We could post the source now but its completely untested and we're not even sure it works properly.