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I came across a ECM archive that I need to extract.
The Unarchiver can't handle this format, and I'm not sure about other utilities.

How do I extract ECM in Mac OS X Lion?

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up vote 3 down vote accepted

You can use the ECM tools created by Neill Corlett, the creator of ECM. Just run "unecm" on the file.

There are binaries for Mac here

If that seems intimidating, there is a youtube walkthrough here that uses a GUI and contains links to the tools used.

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Thanks, this is precisely what I was looking for. –  Dan Sep 15 '11 at 3:27
    
Hey dan did you get this to work? i just bought a mac and it's lion as well. but when i follow that youtube video and try to open the GUI it gives me the error that powerpc isnt supported anymore. help anyone? –  user11649 Oct 5 '11 at 20:49
    
+1 for command line tools. The video is down though –  lajarre Oct 18 '12 at 0:18
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