merging 200 images into a single file

[zsero]

I would like to run a long long command for merging 200 images into a single file. The command I am using at the moment is:

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convert a.png b.png c.png d.png .... .... .... -background transparent -flatten out.png 

The problem I am encountering now is that the command cannot be more than 8192 character long. Can you help me find a fix for this problem? As I understand I should use a text file to provide the list. But how could I do it?

Also, is this convert command compatible with multiple convert sub-commands? I mean:

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convert a b c -> o1 
convert d e f -> o2
convert o1 o2 -> o

Does it make sense?

[anthony]

Yes.... command line limits only started to become a real problem with IM v6. You only choice at this time is using an API or break your command into smaller processing steps with intermediate files.

However with that many files watch out for memory limits..


ASIDE: IMv7 will all Im to process a script of image options, or even a pipeline of commands from a shell (or other langauge) as a co-processor. EG: shell script defines the actions and a single background IM handles an processes images under its direction. For Proposed Chnages and how it would be used see..
http://www.imagemagick.org/Usage/bugs/b ... ipting.txt

However IMv7 is still in early alpha development and may be many months before it will be generally available.