Complemetary questions about decoding a dir and about formats

Hi list and thanks Rob for your answer,

A few complementary questions, again maybe a bit OT:

I do not really need wav format (by the way, is wav in some way a ms
invention?). What I'm trying to do is to decode a lot of mp3s to a format
usable for listening with a non-mp3-capable cd player, i.e in my car, and
then burn them to CDs with k3b. At the first stage (before burning) I would
like to save the mp3s as individual output files in another directory than
the mp3s.

1. Is .cdr a format for my purposes?
2. Shell scripts are a bit beyond my capacity for the moment (but I'm
learning fast). What do you mean with "The above is for Bourne-derived
shells; hopefully yours is not of Csh variety."?

What about this? If i navigate to the directory where the mp3s are and then:

for file .mp3; do madplay -o -v $file.cdr $file; done

Where in this little script should I put the target directory name (called
"cdr)? What does "done" mean? Close?

TIA
/jrx, Stockholm





-----Original Message-----
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On Behalf Of [email protected]
Sent: Wednesday, December 31, 2003 3:27 PM
To: [email protected]
Subject: mad-user digest, Vol 1 #172 - 4 msgs


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Today's Topics:

   1. Decode an old mp3, originally recorded in June-50 ([email protected])
   2. Decode directories, how to? ([email protected])
   3. Re: Decode an old mp3, originally recorded in June-50 (Rob Leslie)
   4. Re: Decode directories, how to? (Rob Leslie)

--__--__--

Message: 1
From: <[email protected]>
To: <[email protected]>
Date: Tue, 30 Dec 2003 22:00:19 +0100
Subject: [mad-user] Decode an old mp3, originally recorded in June-50

Hi, maybe OT.
I have tried to decode an old mp3 with various settings to wav with mad, and
the decoding seems to work fine.

But when I try to burn the wav with k3b, k3b says "wrong format". madplay -v
-i -m --output=wave gives "Layer III, 64 kbps, 22050 Hz, single channel, no
CRC, 7095 frames decoded, -7.4 dB peak amplitude, 0 clipped samples"

Does anybody have any suggestions about what options I should choose when
decoding. I would like to have it in wav.

Or maybe I should look in my k3b settings for this particular file..?

Best regards
/jrx




--__--__--

Message: 2
From: <[email protected]>
To: <[email protected]>
Date: Tue, 30 Dec 2003 22:00:19 +0100
Subject: [mad-user] Decode directories, how to?

Hi list,

I would like to decode a whole directory in a bunch. Probably I have to use
some kind of ordinary *nix command (I'm from the other side), but I can't
figure it out, and I can't find any description of this presumably easy
matter in man madplay

Thanks in advance.

jrx


--__--__--

Message: 3
From: Rob Leslie <[email protected]>
Subject: Re: [mad-user] Decode an old mp3, originally recorded in June-50
Date: Tue, 30 Dec 2003 18:09:11 -0800
To: [email protected]

On Dec 30, 2003, at 1:00 PM, <[email protected]> wrote:
> I have tried to decode an old mp3 with various settings to wav with
> mad, and the decoding seems to work fine.
>
> But when I try to burn the wav with k3b, k3b says "wrong format".
> madplay -v -i -m --output=wave gives "Layer III, 64 kbps, 22050 Hz, 
> single channel, no CRC, 7095 frames decoded, -7.4 dB peak amplitude, 0 
> clipped samples"
>
> Does anybody have any suggestions about what options I should choose
> when decoding. I would like to have it in wav.

If you're trying to burn an audio CD, try:

     madplay -o cdda:track.cdr

The result is a raw CD audio track ready to be burned.

If you really must have a WAV file, you'll have to specify all the 
parameters yourself:

     madplay -o foo.wav --stereo --bit-depth=16 --sample-rate=44100

-- 
Rob Leslie
[email protected]


--__--__--

Message: 4
From: Rob Leslie <[email protected]>
Subject: Re: [mad-user] Decode directories, how to?
Date: Tue, 30 Dec 2003 18:17:10 -0800
To: [email protected]

On Dec 30, 2003, at 1:00 PM, <[email protected]> wrote:
> I would like to decode a whole directory in a bunch. Probably I have
> to use some kind of ordinary *nix command (I'm from the other side), 
> but I can't figure it out, and I can't find any description of this 
> presumably easy matter in man madplay

You can either have madplay decode everything in one go:

     madplay -o out.wav *.mp3

(in this case there is only one output)

or if you need individual output files you can use some shell scripting 
to decode files one-at-a-time:

     for file in *.mp3; do madplay -o $file.wav $file; done

The above is for Bourne-derived shells; hopefully yours is not of Csh 
variety.

-- 
Rob Leslie
[email protected]




End of mad-user Digest