What is an ECM file? ECM stands for Error Code Modeler, it compresses files and save huge amount of space, most of the CD/DVD have unnecessary EDC/ECC data in them and takes lots of space on the drive, ECM only adds the data in the compress file, and thus the file size changes, the compression size depends on unnecessary EDC/ECC data on the CD. So read this post to know how to open it. They are only to burn files of CD images type like ISO,CDZ,BIN etc. But the file can't be open by a Disk Burning or CD image converting programs like Nero, MagicISO etc.

I was browsing a PSX game site and downloaded a game from there and got a ECM file, that was the first time i saw an ECM file, I researched about it and was able to convert it to a working BIN file, the original ECM file was 200MB and when the file was converted into BIN it went to 600MB in size, so you can imagine how powerful is this ECM system.ĮCM files are used to compress files and folders from a CD or CD image, it's very powerful and can compress a CD image to 200MB from 600MB, isn't it great ? So, many people compress their file to ECM and upload it to internet to save space and bandwidth.

Mac .ecm file emulator