ECM (Error Code Modeler) 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
GPL-3.0 License
ECM (Error Code Modeler) 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.
Here's how to use it:
The space saved depends on the number of sectors with unnecessary EDC/ECC data in them, which will depend on the specific type of CD. Here are some examples:
Test CD | Format | Size (RAR) | Size (ECM, then RAR) | Improvement |
---|---|---|---|---|
Metal Gear Solid (PSX) Disc 1 | BIN/CUE | 466,852,244 | 381,033,267 | 18.4% |
Panzer Dragoon Saga (Saturn) Disc 1 | BIN/CUE | 432,909,436 | 366,889,519 | 15.3% |
Tokyo Xtreme Racer 2 (Dreamcast) | CDI | 474,346,319 | 389,917,790 | 17.8% |
ECM is not intended as a tool to aid in acts of copyright infringement
Check available documentation in Wiki section: