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  1. 06-04-2012, 12:05 PM #1
    Music Matters
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    Clone CD .img / ripping

    Years ago I used Clone CD to backup my CDs as .img files, and burn them to DVDs.
    As I'm in process of ripping my old CD collection, I tried to mount the .img file using
    DAEMON TOOLS (copied to hard disk) and rip the CD with dBpoweramp, which is lightening
    fast. I receive the status from dBpoweramp "Secure" but can't be verified with Accurip database.

    With this method of ripping, what do you think is it the same as ripping the CD from the CD drive?
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  2. 06-07-2012, 06:33 AM #2
    iago
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    Ripping from image file

    Were you successful in configuring the track offset values?

    I just tried with a fairly old copy of EAC (0.99pb5) and the virtual CD driver which came with CloneCD 4.2.0.2. I managed to find three CD images contained in the AccurateRip key database and got a track offset of +594 samples / 2376 bytes. Only the automatic offset detection worked, the manual procedure (via drive settings -> offset) delivers huge negative values. Curiously, the track offset corresponds to the offset of the drive I originally used to create the images.

    I ripped the last CD left in the virtual drive, and it completed without errors, including confirmation from AccurateRip. The reverse test with an image known to be defective delivers errors, but only against the AccurateRip database. The internal check sum mechanism does not work in this scenario.

    Personally, I would prefer EAC or dBpoweramp, because you have more control over the process of ripping. If the source can be read without error, both procedures should yield the same result. For marginal material the use of dedicated audio extraction software directly on the source might deliver better results.

    Extracting from an image might also help overcoming certain types of copy protection.
    Thou know'st we work by wit, and not by witchcraft;
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  3. 06-09-2012, 08:17 AM #3
    Music Matters
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    I didn't mess with offset values, when the rip was finished, I opened CueTools and verified the tracks if
    are AccurateRip OK.

    I used this method only for backup CDs, which are old and for some of them I don't have the original any more.
    All other rips were done in traditional way with combo dBpoweramp/EAC.
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  4. 06-14-2012, 11:31 AM #4
    harrypt
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    Clone CD would have stored the info required to confirm a perfect rip.

    dbPoweramp is telling you that it can be sure it's gotten an accurate rip from this disc, but knows it's not an OEM cd and can't prove the original rip was bit perfect.

    If you don't have the originals, it's too late and the only way to know if any differences are audible is to burn one from a backup and burn one from an original and compare.
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  5. 06-14-2012, 12:56 PM #5
    harrypt
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    Oops, in the first line, I meant "would NOT have stored"...
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