Gemc
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Prepare your CD images for compression. Gemc lets you prepare CD image files (such as BIN, CDI, NRG, CCD, or similar) so that they'll compress far better in programs such as WinRAR. The program support Ecm File
The ECM format allows you to reduce the size of a typical CD image file (BIN, CDI, NRG, CCD, or any other format that uses raw sectors; results may vary).
It works by eliminating the Error Correction/Detection Codes (ECC/EDC) from each sector whenever possible. The encoder automatically adjusts to different sector types and automatically skips any headers it encounters.
The results will vary depending on how much redundant ECC/EDC data is present. Note that for "cooked" ISO files, there will be no reduction.
The license of this software is Free, you can free download and free use this file compression software.