What is an ecm file and how do I open an ecm file?
ECM is a disk image file created in the Error Code Modeller format. It stores a disk image by removing redundant error correction codes and checksums; allows the CD image to be reduced in size for transmission over the Internet; often used for compressing game console disc images.
Relevant ecm file links:How to open ecm file on Youtube
How to open ecm file on Wikipedia
How to open ecm file on Microsoft.com