Re: [Cdrtools-support] cdda2wav only finds errors

[Joerg S. <Joe...@fo...>]

Hi,

please do not use cd...@ot... anymore, there is nobody really 
listening and the only traffic seems to be spam since Debian attacked cdrtools.

Please rather use cdr...@li..., this is where people 
are listening and answering.

Volker Kuhlmann <lis...@pa...> wrote:

> Trying to digitise audio CDs with cdda2wav from cdrtools 3.01 I only
> get:
>
> 100%  track 21  recorded with audible hard errors
> 100%  track 22  recorded with audible hard errors
> 100%  track 23  recorded with audible hard errors (0.1% problem sectors)
>
> I.e. every track is reported with "recorded with audible hard errors" as
> best result. The same happens with 3.01a25. All on about 5 different
> drives.

This problem is active since Spring 2014 or even since late 2013 if you did not 
use c2checks. So the problem (that depends on some compiler constraints) was really
visible since Spring 2014 when (as a hacky fix against dumb drives) the c2check 
was removed from the paraopts=proof macro.

Since the problem is not triggered by the Sun C-compiler, it was not detected 
while testing at that time.


	Since some years, there is unfortunately few feedback on cdrtools. But
	quality also depends on user feedback.....



> With cdda2wav 3.01a15, on the same drive as above example, the result
> is:
>
> 100%  track 11  recorded successfully
> 100%  track 12  recorded successfully
> 100%  track 16  recorded with minor problems
> 100%  track 18  recorded with minor problems (0.3% problem sectors)
> 100%  track 19  recorded successfully
> 100%  track 20  recorded with minor problems (0.3% problem sectors)
> 100%  track 21  recorded with minor problems
> 100%  track 22  recorded successfully
> 100%  track 23  recorded with medium problems (5.4% problem sectors)
>
> I.e. a mix of success and some (usually minor) problems.
>
> Between 3.01a15 and 3.01a25 is this change:
>
> --- cdrtools-3.01a15/cdda2wav/cdda2wav.c	2013-05-31 08:56:43.000000000 +1200
> +++ cdrtools-3.01a25/cdda2wav/cdda2wav.c	2014-03-04 11:57:08.000000000 +1300
> -				if (para_stat->readerrs) {
> +				if (para_stat->readerrs || para_stat->c2badsecs) {
>  					fprintf(outfp,
>  						_(" with audible hard errors"));
>
> Which suggests the error detection has become better. However, if every
> CD and every track is read with "audible hard errors" then either the
> process is flawed, all drives are not really useful, or the software is
> either flawed or not so useful - I don't quite believe all pressed CDs
> are that bad everywhere.
>
> Is there a problem in the software?
> If the software is indeed operating correctly, what are good drives to
> use for digitising an audio CD collection?

There was a problem with an uninitalized variable in libparanoia in case of 
disabled C2 Checks. The problem was fixed two weeks ago and published in a 
preliminary copy of the schily tools:

	http://sourceforge.net/projects/schilytools/files/

Since yesterday evening, the paraopts=proof macro again includes c2check and 
there is an automatic fallback to the "no c2" case when the drive does not 
support C2 Checks. Note that this was only tested with a single drive so far,
so we need more tests here from people with different hardware.

Jörg

-- 
 EMail:jo...@sc...                    (home) Jörg Schilling D-13353 Berlin
       joe...@fo... (work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.org/private/ http://sourceforge.net/projects/schilytools/files/'