Batch LAME MP3 conversion ???

khermans · 07-02-2004, 04:56 PM

I'm trying to find a way to batch convert a whole slew of files using lame. I have my options set up, but I don't know how to make it run through a list of files. Any help would be greatly appreciated :-)

Kristian Hermansen

mrcheeks · 07-02-2004, 05:24 PM

may be this page can help you
http://www.tldp.org/HOWTO/MP3-CD-Burning/audio.html

hw-tph · 07-02-2004, 06:18 PM

An easy way of quickly getting it done would be doing a little loop in the shell and then using id3ed or some other batch id3 editor to change the tags.

for file in *.wav; do lame --alt-preset extreme "$file"; done would be enough to encode all the .wav files in a directory to .wav.mp3 using the extreme --alt-preset (what better options could you wish for?

).

Håkan

khermans · 07-02-2004, 06:34 PM

Yes this worked for me. Thanks for the second post. The first post was good, but it took me a little while to figure out that $i needed to be within quotes like "$i"!!! The TLDP.org page in the first reply will not work because of the syntax errors, so thanks for informing me of it in the second post :-)

Kristian Hermansen

UltimateZer0 · 03-18-2005, 02:48 PM

Quote:

Originally posted by hw-tph
encode all the .wav files in a directory to .wav.mp3 using the extreme --alt-preset (what better options could you wish for? ).

How about a "for; do" script to change the ".wav.mp3" to ".mp3"?

Or, in my case, changing ".mp3.mp3" to ".mp3" because I'm re-encoding all of my music to be ABR192 to save disk space; so while I'm testing my theories, I've got a directory full of .mp3 and .mp3.mp3

My current, albeit failing, theory is something along the lines of:

Code:

for file in *.mp3.mp3; do mv -f "$file.mp3.mp3" "$file.mp3"; done

which always gives me a "cannot stat ... No such file or directory" error.

I wish I could figure out how to do this myself, but I know very little of programming. . . please help me!

UltimateZer0 · 03-18-2005, 03:06 PM

Nevermind. I just figured it out, with the help of some Linux Veterans. (Thx, guys!)

Just in case anyone is in the predicament I was in, here's the code:

Code:

#!/bin/bash

for file in *.mp3; do lame --preset 192 -ms -h "$file"; done

for i in *.mp3.mp3 ; do
n=`basename "$i" .mp3.mp3`
mv "$i" "$n".mp3
done

I put that text into my editor and saved it as /bin/mp3batch, but I might note that I had to "chmod +x"before it would run.
If you decide to use this, obviously you'll want to tailor it to your needs, but that's basically it.

khermans · 03-18-2005, 04:59 PM

Quote:

Originally posted by UltimateZer0
Nevermind. I just figured it out, with the help of some Linux Veterans. (Thx, guys!)

Just in case anyone is in the predicament I was in, here's the code:

Code:

for i in *.mp3.mp3 ; do n=`basename "$i" .mp3.mp3` mv "$i" "$n".mp3 done

This should work much more easily for you:

Code:

rename 's/.mp3//' *.mp3

Try that man ;-P The expression s/.mp3// strips the .mp3 extension for you...

Kristian Hermansen

UltimateZer0 · 03-27-2005, 12:18 AM

Alright, I've simplified my script; but I was wondering if anyone knew how to throw maybe a "-r" flag in there to be recursive. I have quite a few folders under /music and it's tedious and painful to go into each dir and run the script manually.

Any help would be greatly appreciated.

khermans · 03-27-2005, 01:38 AM

Quote:

Originally posted by UltimateZer0
Alright, I've simplified my script; but I was wondering if anyone knew how to throw maybe a "-r" flag in there to be recursive. I have quite a few folders under /music and it's tedious and painful to go into each dir and run the script manually.

The easiest way that I know how to do this is listed below. Say you are in a directory /home/foo, which has subdirectories sub1, sub2, and sub3. And all the subdirectories have files named blah???.mp3.mp3, where ? can be substituted for a character of any choice. You just want to rename all the .mp3.mp3 files in all the subdirectories right? So here you go:

Code:

find /home/foo -iname *.mp3.mp3 | rename 's/.mp3//'

Let me know if that doesn't work for ya ;-)

Kristian Hermansen

UltimateZer0 · 03-27-2005, 01:59 PM

Quote:

Originally posted by khermans
You just want to rename all the .mp3.mp3 files in all the subdirectories right?

Well, actually, I was hoping I could re-encode and then rename files recursively; but your scripting gives me an idea. Look this over and see if you think it would work:

Code:

find /home/foo -iname *.mp3 | lame --preset 192 -ms -h *.mp3 && rename 's/.mp3//'

Idunno. . . something like that. . . Whaddaya think?

khermans · 03-27-2005, 06:10 PM

Quote:

Originally posted by UltimateZer0
Well, actually, I was hoping I could re-encode and then rename files recursively; but your scripting gives me an idea. Look this over and see if you think it would work:

Code:

find /home/foo -iname *.mp3 | lame --preset 192 -ms -h *.mp3 && rename 's/.mp3//'

You will probably need to remove the *.mp3 argument to lame, since they are already coming in from the piped find command. I', not sure that the "&&" will work the way you have it. It may, but I haven't tried it myself. To be certain, you can always start another find command after your &&:

Code:

find /home/foo -iname *.mp3 | lame --preset 192 -ms -h && find /home/foo -iname *.mp3.mp3 | rename 's/.mp3//'

Try that...

Kristian Hermansen