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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