MAMEWorld >> EmuChat
View all threads Index   Flat Mode Flat  

R. Belmont
Cuckoo for IGAvania
Reged: 09/21/03
Posts: 9711
Loc: ECV-197 The Orville
Send PM
Re: Chdman questions
07/27/15 08:20 PM


> Hmmm... I would really like to trace the extracted chd content back to its source.
>
> Please indulge me again: if I store a trurip disc in chd, and then extract it, am I
> right in saying the sha1s of the cue and bin will not be the same as the source files
> I added to the chd in the 1st instance? That's the crux for me.
>
> It looks like chd compression is irreversible?

It's reversible; for well-formed source CD inputs, -extractcd to the same format will give hash-matching binary data and semantically-matching metadata (cue/toc).

But getting full hash-matching everything back is unlikely; as Haze alluded to, for each .cue file, there are dozens of other .cue files which aren't perfect matches but ultimately create the same disc.







Entire thread
Subject Posted by Posted on
* Chdman questions midget35 07/26/15 12:58 PM
. * Re: Chdman questions mw  07/26/15 06:25 PM
. * Re: Chdman questions midget35  07/26/15 07:27 PM
. * Re: Chdman questions R. Belmont  07/27/15 04:42 PM
. * Re: Chdman questions mw  07/27/15 04:52 AM
. * Re: Chdman questions CiroConsentino  07/26/15 07:44 PM
. * Re: Chdman questions midget35  07/26/15 09:24 PM
. * Re: Chdman questions CiroConsentino  07/26/15 11:37 PM
. * Re: Chdman questions midget35  07/27/15 05:13 PM
. * Re: Chdman questions R. Belmont  07/27/15 05:20 PM
. * Re: Chdman questions midget35  07/27/15 05:49 PM
. * Re: Chdman questions mw  07/27/15 08:40 PM
. * Re: Chdman questions midget35  07/28/15 08:32 PM
. * Re: Chdman questions mw  07/29/15 08:40 AM
. * Re: Chdman questions midget35  07/29/15 10:06 AM
. * Re: Chdman questions Haze  07/27/15 06:07 PM
. * Re: Chdman questions midget35  07/27/15 06:26 PM
. * Re: Chdman questions Haze  07/27/15 06:57 PM
. * Re: Chdman questions midget35  07/27/15 07:59 PM
. * Re: Chdman questions R. Belmont  07/27/15 08:20 PM
. * Re: Chdman questions midget35  07/27/15 08:55 PM
. * Re: Chdman questions R. Belmont  07/27/15 09:48 PM
. * Re: Chdman questions midget35  07/27/15 11:22 PM
. * Re: Chdman questions Moose  07/28/15 02:17 AM

Extra information Permissions
Moderator:  Robbbert, Tafoid 
1 registered and 14 anonymous users are browsing this forum.
You cannot start new topics
You cannot reply to topics
HTML is enabled
UBBCode is enabled
Thread views: 3340