Hi Mark

I found this tutorial via google:

https://www.georgestarcher.com/?p=254
One degree of separation to benbritton.com (who he credits for Image Units finite dimensioning advice) in my hometown Melbourne, yeh.

I wonder if this is essentially what I need to do?

Maybe, not sure what effect it is you want to create! If you just want to process images through CIFilters then may be CoreImageTool is what you are after.
http://www.entropy.ch/software/macosx/coreimagetool/




Another route is an Applescript command to have Quartz Composer open the file, Viewer Window and run it, but the .qtz file would need to export the result(s) itself. Apple has a image exporter plugin for QC in the developer example files, well it did for 10.5 at least. There are other 3rd party ways to get live visuals out of QC — not least (soon to become beta) Syphon

Applescript will probably be too slow for my application. Syphon looks very promising!
The Applescript would only be saying to QC open this file and run it, how much slower than a shell script to do same is that? I can't do much with shell — that's why I suggested AS I guess.

Alastair
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