Date: Sat, 29 Nov 2008 10:01:56 +0100 From: Polytropon <freebsd@edvax.de> To: yuri@rawbw.com Cc: freebsd-questions@freebsd.org Subject: Re: Copying audio CD with dd/cdrecord produces unplayable CD Message-ID: <20081129100156.72122e71.freebsd@edvax.de> In-Reply-To: <4931030C.7070409@rawbw.com> References: <4930EEBB.7050701@rawbw.com> <20081129084852.6d00f2e5.freebsd@edvax.de> <4931030C.7070409@rawbw.com>
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On Sat, 29 Nov 2008 00:53:32 -0800, Yuri <yuri@rawbw.com> wrote:
> Polytropon wrote:
> > On Fri, 28 Nov 2008 23:26:51 -0800, Yuri <yuri@rawbw.com> wrote:
> >
> > If you need to use cdrecord, you can "preprocess" the .cdr
> > files with "sox -x". You can always use the "play" command
> > (from sox) to check what your files sound like.
> >
>
> 'sox -x' fails for some tracks with the message:
> sox formats: no handler for detected file type `video/x-unknown'
Strange... are these definitely audio CD tracks? You could
use this form to explicitely tell sox how to interpret the
data (which is "headerless" on audio CDs, of course):
sox -r 14400 -c 2 -b -L -S -x track.cdr track_rev.cdr
This describes CD audio as 14.4 kHz stereo 16 Bit (little
endian - to be swapped). From the manual:
-1/-2/-3/-4/-8
The sample datum size is 1, 2, 3, 4, or 8 bytes; i.e. 8, 16, 24,
32, or 64 bits.
The flags
-b/-w/-l/-d which are respectively aliases for -1/-2/-4/-8, and
abbreviate byte, word, long word, double long (long long) word,
are retained for backwards compatibility only.
Seems like I'm a bit old fashioned. :-)
> and for some other tracks with these errors:
> sox mp3-duration: recoverable MAD error
> sox mp3-duration: MAD lost sync
> sox mp3-duration: recoverable MAD error
> sox mp3-duration: recoverable MAD error
This looks like that sox reads / generates MP3 files...?
Are these definitely standard audio CD tracks (such as every
old fashioned CD player can play)?
--
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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