Legacy ImageMagick Discussions Archive

Dear all,

I have a really big (3GB) multi-page TIFF that I would like to break into smaller pieces. I can successfully accomplish this, for smaller files, using a command such as `convert original.tif output%d.tif`, but I am getting various memory errors (e.g. "malloc: *** mmap(size=1048576) failed (error code=12)", "UnableToAcquireString `Cannot allocate memory' @ string.c/AcquireString/126") when I try it on my big file. Is there any way to do the splitting in pieces, so that the whole file is not mmapped?

I don't have a specific solution, but see if -limit helps.

Add -limit area 0 to your command line. You can also convert one page at a time:

• convert 'image.tif[0]' image-0.jpg
  convert 'image.tif[1]' image-1.jpg
  ...