ISRC reading inconsistancies

**Spoon** · October 07, 2008, 08:11 AM

Re: ISRC reading inconsistancies

I will mark as a bug to look at with r13.2

**pjc2** · January 21, 2010, 01:02 AM

Re: ISRC reading inconsistancies

Did this get fixed? I'm not seeing any ISRC (or CD-UPC) codes when using PerfectMeta.

**Spoon** · January 21, 2010, 10:10 AM

Re: ISRC reading inconsistancies

It was fixed yes (so ISRC would stay in the tags if present)

**simonff** · February 17, 2010, 11:43 PM

Re: ISRC reading inconsistancies

Hi

I am back in my new re - incarnation as (simonff) formally known as (simonf) I had to reregistre with a new email address as resetting my password on the old account didn't get me an email I have tried a few times over the past couple of weeks to no avail... :(

I had installed the latest version of DBPoweramp only to find it still didn't read ISRCs properly or consistently. So as I needed something that did I wrote my own program to do it. I knew how to decode the information from the Q data I just didn't know how to read the P-W channels from VB. So I decided to learn c++ and use IOCTL from there to read the audio sectors + the 96 bytes of p-w data. I had already written code to decode this data in VB.

Anyhow I have ended up with a small (500k) command line program which will read the ISRC data from all the discs ( that have isrc data ) that dbpoweramp said there weren't ISRCs in. it works consistently accross all five of my drive (which are all different models).

I have subsequently expanded this program to rip CD-TextData From the ExToc and rip individual tracks to wavs. It can also read wav files and create CRC's and accurip crc's with a given offset. (I obtained mine by comparing the file I had ripped to one ripped by DBpoweramp (the offset on all my drives is +6 which was what DBpoweramp said it was)).

I would like to share this with you as i have with the musicbrainz community. I have written a wrapper round this for musicbrainz to submit the ISRC and PUID data to there database

Running the command

mediatools drive e toc isrc upc and cdtext

Produces

TOC START
01 0 13035 173.800000
02 13035 19937 265.826667
03 32972 19768 263.573333
04 52740 26330 351.066667
05 79070 26680 355.733333
06 105750 23080 307.733333
07 128830 28337 377.826667
08 157167 30835 411.133333
09 188002 18530 247.066667
10 206532 34490 459.866667
11 241022 24470 326.266667
12 265492 20135 268.466667
13 285627 24208 322.773333
14 309835 6790 90.533333
TOC END
CDTEXT STARTS
Title 0 George Michael Patience
Title 1 Patience (Album Version)
Title 2 Amazing (Album Version)
Title 3 John And Elvis Are Dead (Album Version)
Title 4 Cars And Trains (Album Version)
Title 5 Round Here (Album Version)
Title 6 Shoot The Dog (Album Version)
Title 7 My Mother Had A Brother (Album Version)
Title 8 Flawless (Go to the City) (Album Version)
Title 9 American Angel (Album Version)
Title 10 Precious Box (Album Version)
Title 11 Please Send Me Someone (Anselmo's Song) (Album Version)
Title 12 Freeek! '04 (Album Version)
Title 13 Through (Album Version)
Title 14 Patience (Pt.2)
Artist 0 George Michael
Cat No 0 2 515402
UPC/EAN 5099751540229
CDTEXT ENDS
UPC STARTS
5099751540229
UPC ENDS
ISRCS STARTS
ISRC 01 GBBBN0300689
ISRC 02 GBBBN0300681
ISRC 03 GBBBN0300646
ISRC 04 GBBBN0300682
ISRC 05 GBBBN0300684
ISRC 06 GBAKW0201289
ISRC 07 GBBBN0300685
ISRC 08 GBBBN0300686
ISRC 09 GBBBN0400029
ISRC 10 GBBBN0300683
ISRC 11 GBBBN0400041
ISRC 12 GBBBN0400043
ISRC 13 GBBBN0300688
ISRC 14 GBBBN0400046
ISRCS ENDS

It, the program and source, can be downloaded from

http://www.flanagan-family.com/mediatools.zip

its only 199k and was compiled in VS2008

Maybee spoon would like to use/look at the ISRC extraction part so I no longer have to rip the disc with dbpoweramp and then run this to get the isrc data

You are all free to use and modify the code/program as you wish

simonff

aka

simonf

**Spoon** · February 18, 2010, 08:22 AM

Re: ISRC reading inconsistancies

If you want to send me that CD...then it can be fixed.

**simonff** · February 18, 2010, 12:12 PM

Re: ISRC reading inconsistancies

Hi Spoon

Its not a problem at disc level its down to the way the software extracts the ISRC's. CDDA2WAV makes the same mistake as does nero, whereas CloneCD and EAC do it correctly . I have the same problem on all the discs with this drive one. One of my other drives returns nothing at all this drive return a corrupted first 3 characters. But with my method i get the same (correct) ISRC's on all 3 drives.

CDDA 2 WAV Results (As you can see the ISRC's are wong the secon and third bytes are corrupt)

Code:

C:\cdrtools>cdda2wav -D 1,0,0 -J
Type: ROM, Vendor 'TSSTcorp' Model 'DVD+-RW TS-L632H' Revision 'D300' MMC+CDDA
983040 bytes buffer memory requested, 4 buffers, 27 sectors
*blooper*Cdda2wav version 2.01_cygwin32_nt_1.5.10(0.116-4-2)_i686_i686, soundcard, libpa
ranoia support
Disc identification: 2 515402
AUDIOtrack pre-emphasis  copy-permitted tracktype channels
      1-14           no              no     audio    2
Table of Contents: total tracks:14, (total time 70:21.50)
  1.( 2:53.60),  2.( 4:25.62),  3.( 4:23.43),  4.( 5:51.05),  5.( 5:55.55),
  6.( 5:07.55),  7.( 6:17.62),  8.( 6:51.10),  9.( 4:07.05), 10.( 7:39.65),
 11.( 5:26.20), 12.( 4:28.35), 13.( 5:22.58), 14.( 1:30.40)

Table of Contents: starting sectors
  1.(       0),  2.(   13035),  3.(   32972),  4.(   52740),  5.(   79070),
  6.(  105750),  7.(  128830),  8.(  157167),  9.(  188002), 10.(  206532),
 11.(  241022), 12.(  265492), 13.(  285627), 14.(  309835), lead-out(  316625)
CDINDEX discid: yVj5VhX4NI4qGEsGZ6mmgMKEcY4-
CDDB discid: 0xad107d0e
CD-Text: detected
CD-Extra: not detected
Album title: 'George Michael   Patience'        [from George Michael]
Track  1: 'Patience (Album Version)'
Track  2: 'Amazing (Album Version)'
Track  3: 'John And Elvis Are Dead (Album Version)'
Track  4: 'Cars And Trains (Album Version)'
Track  5: 'Round Here (Album Version)'
Track  6: 'Shoot The Dog (Album Version)'
Track  7: 'My Mother Had A Brother (Album Version)'
Track  8: 'Flawless (Go to the City) (Album Version) '
Track  9: 'American Angel (Album Version)'
Track 10: 'Precious Box (Album Version)'
Track 11: 'Please Send Me Someone (Anselmo's Song) (Album Version)'
Track 12: 'Freeek! '04 (Album Version)'
Track 13: 'Through (Album Version)'
Track 14: 'Patience (Pt.2)'
Media catalog number: 5099751540229
T:  1 ISRC: GA-QLC-03-00689
T:  2 ISRC: GA-QLC-03-00681
T:  3 ISRC: GA-QLC-03-00646
T:  4 ISRC: GA-QLC-03-00682
T:  5 ISRC: GA-QLC-03-00684
T:  6 ISRC: GA-QKW-02-01289
T:  7 ISRC: GA-QLC-03-00685
T:  8 ISRC: GA-QLC-03-00685
T:  9 ISRC: GA-QLC-04-00029
T: 10 ISRC: GA-QLC-03-00683
T: 11 ISRC: GA-QLC-04-00041
T: 12 ISRC: GA-QLC-04-00043
T: 13 ISRC: GA-QLC-03-00688
T: 14 ISRC: GA-QLC-04-00046

The method I use is to read upto the first 150 sectors frames (or until the isrc is found). I read the data including the 96 bytes of p-w data, then I decode the q sub channel and search for one that starts with "2" (this is an ISRC).

I then decode the subsequent bytes into an ISRC code.

I can send you a disc but as I say its not unique to this disk its all discs.

**Spoon** · February 18, 2010, 04:18 PM

Re: ISRC reading inconsistancies

All my CD Text discs read fine on the variety of drives, but like you said it might be something to do with the disc.

Please send an email:

dBpoweramp: Email Illustrate

http://www.dbpoweramp.com/email.htm

**simonff** · February 18, 2010, 05:59 PM

Re: ISRC reading inconsistancies

Hi Spoon

Reading from CD Text isn't a problem Its extracting ISRC Data From the Q Sub data where the problem seems to be.

I will email you with the details when I get a mo.

Simon

PS the only problem with my solution is it uses SCSI Pass through so may not be suitable for some People.

ISRC reading inconsistancies

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