xenial (1) ecm-compress.1.gz

Provided by: ecm_1.03-1_amd64 bug

NAME

       ecm-compress - selectively strips error correction codes from CD images

SYNOPSIS

       ecm-compress  cdimagefile [ecmfile]

DESCRIPTION

       ecm-compress  reduces  the size of a CD image file (ISO, BIN, CDI, NRG, CCD or any other format that uses
       raw sectors) by eliminating the Error Correction Codes (EEC) and Error Detection Codes  (EDC)  from  each
       sector when possible.

       Since  the  data ecm-compress strips is usually nearly impossible to compress with traditional tools, the
       resulting ECM file will compress far better than the raw CD image.

       Hard drives already have mechanisms to protect data integrity, EEC/EDC data can thus be discarded safely.

       This data can then be generated again using the command ecm-uncompress.

       Because ecm-compress only discards EDC/ECC data for sectors where it's verifiably  possible  to  recreate
       that  data,  the  process  is  lossless. In case of copy protection, ecm-compress will preserve the bogus
       data.

EXAMPLES

       ecm-compress foo.bin
              strips the ECC/EDC data from the foo.bin CD image and save the resulting file as foo.bin.ecm

       ecm-compress foo.img foobar
              strips the ECC/EDC data from the foo.img CD image and save the resulting file as foobar

SEE ALSO

       ecm-uncompress(1).

AUTHOR

       ecm-compress was written by Neill Corlett.

       This manual page was written by Loïc Martin <loic.martin3@gmail.com>, for the Debian project (but may  be
       used by others), using the documentation written by ECM author Neill Corlett.

                                                December 22, 2008                                ECM-COMPRESS(1)