From the ImageMagick manual, of all places:
- Multi-Page TIFF
If you want to split a multi-page tiff into separate pages, IM may have problems as it will still use up a lot of memory to hold previous pages even if you use a command like...
convert "a.tif[i]" b%03d.tif
This might be regarded as a bug, or perhaps a future improvement.
The better solution may be the non-IM "tiffsplit" program.