[Paranoia] "V" in progress bar

[grarpamp]

On Sun, Feb 15, 2015 at 1:53 PM, Jean-Pierre Lemoine
<w2brn9dsep81vhrhonarap at teaser.fr> wrote:
> "V" is said to mean "uncorrected error/skip". I've always
> assumed that it meant "uncorrected by cdparanoia". But I have
> this track which sometimes rips with "V" and sometimes without.
>
> I hear artefacts in the rips without "V" but not in the rips
> with. So I'm beginning to wonder if "V" could mean "uncorrected
> by the drive but corrected by cdparanoia".
>
> Does "V" equate to "this rip is not good" ?

A true hard error can't be corrected. Any "correcting" that rippers
do is either
- interpolation at best, ie: literally making stuff up to fill data gap
- rereading in hopes of a soft/transient error such that some
data bits are returned, then select which ones are correct based
on some schemes

You may want to treat any type of less than perfect message as
"this rip is not good", and then first investigate why. Is the disc clean
and without any physical imperfections / scratches? What are the
results when using a different drive, bus or computer? Or using
different software such as cdda2wav? Best N out of M rips, etc.
Hardware returns random bits all the time. Test, isolate and repair
the issue, then recheck throughout production... drives do fail
silently.