Date: Tue, 18 Dec 2001 00:49:47 -0500 From: Jim Durham <durham@w2xo.pgh.pa.us> To: Erik Moe <emoe@mmcable.com>, freebsd-multimedia@FreeBSD.ORG Subject: Re: Making audio CDs with FreeBSD Message-ID: <200112180607.fBI678f53327@w2xo.pgh.pa.us> In-Reply-To: <3C1E8D70.86A56F6E@mmcable.com> References: <3C1E8D70.86A56F6E@mmcable.com>
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On Monday 17 December 2001 07:27 pm, Erik Moe wrote:
> I'm trying to make a copy of an audio CD. My last two attempts
> generated nothing but an hour and a half of static. I have two drives
> in my system, a Toshiba SCSI CD-ROM and an HP 8200 IDE CD-RW. I'm using
> "cdda2wav" to rip the raw data off the SCSI drive and "burncd" to make
> the copy on the IDE.
>
> Here is the command I use to do the ripping:
>
> cdda2wav -D0,1,0 -B -Oraw
>
> I think that the rip is successful since I have used sox to play the
> audio:
>
> play -t cdr audio_01.raw
>
> Now I burn the disk:
>
> burncd -f /dev/acd0c -S 4 audio audio_??.raw fixate
>
> Generates 12 tracks of static. I thought that it may have something to
> do with the endianess of the input file so I tried another rip:
>
> cdda2wav -D0,1,0 -B -Oraw -C guess -E big
>
> Thinking that the original file was little endian and needed to be big
> endian. Same effect, nothing but static. Anyone know the real deal?
>
Try the -swab flag in cdrecord. I'm not sure if it will fix your problem, but
I remember having this problem once and it fixed it. From the cdrecord
man page.....
-swab If this flag is present, audio data is assumed to
be in byte-swapped (little-endian) order. Some
types of CD-Writers e.g. Yamaha, Sony and the new
SCSI-3/mmc drives require audio data to be pre-
sented in little-endian order, while other writers
require audio data to be presented in the big-
endian (network) byte order normally used by the
SCSI protocol. Cdrecord knows if a CD-Recorder
needs audio data in big- or little-endian order,
and corrects the byte order of the data stream to
match the needs of the recorder. You only need the
-swab flag if your data stream is in Intel (little-
endian) byte order.
Note that the verbose output of cdrecord will show
you if swapping is necessary to make the byte order
of the input data fit the required byte order of
the recorder. Cdrecord will not show you if the
-swab flag was actually present for a track.
Jim Durham
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