[Abcde-users] Problem with CDDB file creation {External}

Alan W. Kerr awkerr at nrao.edu
Fri Feb 25 00:13:38 GMT 2022

I have seen this problem.  I know what is happening...
but I haven't found what is *causing* it.

also, thank you for providing the CD name (Primus / Rhinoplasty)
I could look it up and see that it is a known glitch.

the cddb discid is of the form:
and is all in hexadecimal.
XX is a checksum of the audio tracks
YYYY is the length of the CD in seconds
ZZ is the number of tracks

Primus / Rhinoplasty has 9 audio tracks and a tenth Data Track...
so the original 7810040a says that the CD is 4100 seconds (1004 hex)
and has 10 tracks (0a hex)
*BUT* track 10 is a data track...  and "somewhere" it gets recalculated
and the code "knows" that there are only 9 audio tracks, so it becomes
6d0b4a09.  Now ZZ is 09.  YYYY is now only 2890 (0b4a hex).  So it has
been "shortened" by ignoring track 10 (the data track).

When this has happened to me, I've had to copy it like you did.

Doesn't solve the problem... but now you know what is happening.

Alan W. Kerr

On 2/21/22 17:55, Dan Hargens wrote:
> Here's an interesting situation where I don't know what's causing this 
> problem. I think this is the first time I've seen this problem, as my 
> other rips have been clean.
> The disc is Primus / Rhinoplasty.
> The command "cd-discid /dev/sr0" returns the following:
> 7810040a 10 150 23100 52005 71430 85790 98632 112265 142777 183010 
> 228310 4102
> However the file 7810040a is not created in the cddb directory as 
> expected, but rather creates file 6d0b4a09 with all the relevant info 
> for this disc.
> Thoughts on how this happens? Is a calculation off somehow (a rare 
> occurrence admittedly)? Anything I can do to research this to assist?
> I got around my problem by copying the file from 6d0b4a09 => 7810040a 
> and re-ripping it. However, I'd rather clean up the problem if I can 
> than work around it.
> Thanks in advance,
> Dan
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