BASH script for converting ogg to mp3.

hacker supreme · 07-06-2007, 12:13 PM

Yes, I know that there have been other threads with similar subjects but none seem to have the outcome that I am looking for.

What I would like to do is convert my entire (all 2.5GBs) music collection to mp3 so that I can play them on my media player.
(I looked at the stats. It only plays the proprietry formats, boo.)

Oh, and I'm trying to avoid using Audacity to convert them one by one and manually edit the ID3 tags.

dawkcid · 07-06-2007, 01:19 PM

You can use oggdec to decode ogg files to raw PCM, then pipe that into an mp3 encoder (lame, etc.). You'll probably need to specify the sample rate and bitwidth manually (44100KHz, 16-bit, or whatever). Something like,

Code:

#!/bin/sh
for f in "$(find "$@" -name "*.ogg")"; do
        oggdec -R -b 16 -e 1 -o - $f | lame --verbose -r -m j -s 44.1 --bitwidth 16 - ${f%.*}.mp3
done

Feed it a directory (or list or directories) and it'll convert all the ogg files in that tree. (Well, it should....) You might need to play with the options a bit if your samples aren't at 44100/16-bit etc.

edit:
You may or may not need the '-e 1' option to oggdec. This swaps the endiannesss of the output. -e 1 uses big endian output, I found that I need this (on x86), presumably lame assumes big endian input (the man page doesn't specify). If the output file is just noise, then remove this option.

David the H. · 07-06-2007, 01:54 PM

Only 2.5gb? I've ripped about 60 gigs of oggs already from my cd collection, and I still have about a hundred disks to go.

Check out soundconverter. It can convert several formats and keep the tags. It can be used in cli batch mode or from it's gui. You'll need lame and the gstreamer-lame plugin for mp3 support.

I should warn you though. the last time I tried it, for some reason the mp3 tags it generated wouldn't display in either easytag or audiotagtools. Probably an id3 version problem or something. They showed up just fine in audacious and konqueror (with the metadata plugin) though.

BTW, it bears repeating that converting from one lossy format to another always means some level of sound degradation. Re-ripping from the original media is recommended for best quality.

Oh yeah, one more thing. Some no-brand mp3 players can play .ogg files, even if it's not stated as such on the box. If you're player is one like that, you might want to test it out.

hacker supreme · 07-06-2007, 02:45 PM

Hmmm... I'll have to check if it'll play OGG. If it does I'll let you know.

Yes! It does play OGG files. (I should've checked earlier.)
Saves me a whole lotta trouble.

And David, yeah I've only got 2.5GB of music, I don't often have the money to go out and buy CDs, etc.

sumdog · 06-30-2009, 02:39 PM

I wanted to do the same thing, plus I wanted to maintain my OGG meta data (convert it to ID3 tags). I created the following script:

http://penguindreams.org/scripts/oggfolder2mp3/

It does a folder at a time, and places it in a destination (e.g. if you select "/media/music/Radio Head - Kid A" as the source and "/tmp/convert" as the destination, it will created a new folder called "/tmp/convert/Radio Head - Kid A" and place the mp3s in it)

You can place calls to the script in a for loop to take care of all your directories.

-Sumit