[paranoia] Paranoia Jitters in batch mode

[Johannes Tevessen]

Hello all,

I'm trying to read in an audio CD using:

cdparanoia III release 9.8 (March 23, 2001)

(which is Current Stable and Most Current Version
according to the web page)

In Batch Mode (-B) over the whole disc, there seem
to be strange positions on the disc where cdp sees
jitter. This looks like this:

Ripping from sector       0 (track  1 [0:00.00])
          to sector  165482 (track 10 [4:28.14])

outputting to track01.cdda.wav

 (== PROGRESS == [                             -| 018431 00 ] == :^D *
==)   

outputting to track02.cdda.wav

 (== PROGRESS == [-----------------------------!| 034169 00 ] == :^D *
==)   

outputting to track03.cdda.wav

 (== PROGRESS == [---                           | 050634 00 ] == :^D *
==)   

outputting to track04.cdda.wav

 (== PROGRESS == [                              | 067240 00 ] == :^D *
==)   

outputting to track05.cdda.wav

 (== PROGRESS == [                              | 078825 00 ] == :^D *
==)   

outputting to track06.cdda.wav

 (== PROGRESS == [                             !| 097432 00 ] == :^D *
==)   

outputting to track07.cdda.wav

 (== PROGRESS == [-----------------------------!| 112607 00 ] == :^D *
==)   

outputting to track08.cdda.wav

 (== PROGRESS == [-----------------------------!| 123532 00 ] == :^D *
==)   
[...]

o I concentrated on that "-" part between track 1 and 3 first. The
effect is the same with different read speeds (-S) and on different
drives (first a TEAC CD-RW, second a Pioneer DVD-ROM). Strangely,
it seems to depend on positioning the laser on the disc in Batch Mode,
since if I try to grab track 2 and track 3 separately ("2-2" and "3-3"),
cdp doesn't see jitter at all. Only on "1-1" there is still a dash
in the last column:

$ cdparanoia -B -d /dev/scd1 -- "1-1"
cdparanoia III release 9.8 (March 23, 2001)
(C) 2001 Monty <monty at xiph.org> and Xiphophorus

Report bugs to paranoia at xiph.org
http://www.xiph.org/paranoia/

Ripping from sector       0 (track  1 [0:00.00])
          to sector   18431 (track  1 [4:05.56])

outputting to track01.cdda.wav

 (== PROGRESS == [                             -| 018431 00 ] == :^D *
==)   

Done.

And even in non-batch mode there's still a read error at the
very end of some songs like this:

outputting to track07.cdda.wav

 (== PROGRESS == [                             !| 112607 00 ] == :^D *
==)   

So I suspect cdp isn't repositioning the laser
in Batch Mode at all and for some strange reason it pulls the jitter
drift "hard-wired" onto the disc on to further tracks?

The CD does _not_ wear the "CDDA" label and is a no-name Mark Knopfler
one with 10 tracks ("made in E.C.") from (c) 1999. No indication of
copy "protection" on disc or cover. Surfaces are clean as a baby.

So is there an option to have cdp re-sync on every track even in
batch mode? Is this behaviour caused by cdparanoia or by the disc
itself?

My box is a Linux-2.4.16, 128M, 1200MHz Athlon, drives:

csibus0:
        0,0,0	  0) 'PIONEER ' 'DVD-ROM DVD-105 ' '1.22' Removable CD-ROM
        0,1,0	  1) 'TEAC    ' 'CD-W512EB       ' '2.0B' Removable CD-ROM

(ATAPI hdc/hdd, running through SCSI layer)

kind regards from Cologne
johannes

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