Trouble with sox and MAD

English Multimedia
#1

I think I may be missing something simple here. I wrote a script to take multiple mp3 files and convert them to wav using sox. This script worked perfectly the last time I used it a couple months ago. Today, I found myself needing it again, but now sox will not run. Sox tells me that it cannot find the MAD decoder. I have both libmad and libmad0 installed. I used Yast to remove sox and tried to install sox from the source code. After ./configure, sox’s build options summary says there will be no support for mad, despite the fact that I know it’s installed.

I tried to downgrade to an older version of mad, but that didn’t make any difference. What the heck am I missing?

–chriscrutch

#2 
$ file test.mp3 
test.mp3: MPEG ADTS, layer III, v1, 128 kbps, 44.1 kHz, JntStereo
$ sox -t mp3 test.mp3 test.wav
$ file test.wav 
test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 44100 Hz

Works for me™ with


rpm -qa sox "libmad*"

libmad0-0.15.1b-1.pm.3.1
sox-14.3.0-99.pm.99.4
#3

My results:

$ file test.mp3
test.mp3: Audio file with ID3 version 2.3, MP3 encoding
$ sox -t mp3 test.mp3 test.wav
sox FAIL mp3: could not find MAD decoder library (libmad)
sox FAIL formats: can't open input file `test.mp3':

And:

rpm -qa sox "libmad*"

libmad0-0.15.1b-10.1
sox-14.3.0-99.pm.99.4
libmad0-32bit-0.15.1b-1.pm.3.1
libmad-0.15.1b-16.1

–chriscrutch

#4

Well, then you know what to remove and replace.

#5

Changes made, still results in failure:

$ sox -t mp3 test.mp3 test.wav
sox FAIL mp3: could not find MAD decoder library (libmad)
sox FAIL formats: can't open input file `test.mp3':

And:


$ rpm -qa sox "libmad*"
sox-14.3.0-99.pm.99.4
libmad0-0.15.1b-1.pm.3.1
#6 

cat /etc/SuSE-release

file $(which sox)

rpm -qa --queryformat '%{name}-%{version}-%{arch}
' "*sox*" "libmad*"

su - -c "zypper se -si |grep -v pattern |grep i586"
#7

Suse version: x86_64.

Sox version: sox-14.3.0-x86_64

Libmad version: libmad0-0.15.1b-x86_64

586 packages installed: flash-player, libflashsupport, master-boot-code, w32codec-all, wine. None of those packages have x86-64 versions available to install according to Yast and my subscribed repos.

–chriscrutch

#8

Did you build anything else from source?

whereis libmad.so.0 libmad.so

You also missed out the output of the file-command.

#9

Sorry about the other output.


$ file $(which sox)
/usr/bin/sox: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for GNU/Linux 2.6.4, dynamically linked (uses shared libs), not stripped

I have installed lots of things from source over the course of the last three years (when I first started running Suse), I don’t recall whether any of them were audio-related. I also know that the only thing I’ve installed from source since the last time I knew that sox worked was not audio-related and has since been removed.

$ whereis libmad.so.0 libmad.so
libmad.so: /usr/lib64/libmad.so.0
libmad:

–chriscrutch

#10

Now that’s interesting:


whereis libmad.so.0 libmad.so
libmad.so: /usr/lib64/libmad.so /usr/lib64/libmad.so.0
libmad: /usr/lib64/libmad.so

See the difference?

I presume sox searches for libmad.so (instead of libmad.so.0) and does not find it.

But here comes the real fun:


ls -l /usr/lib64/libmad.so
lrwxrwxrwx 1 root root 11 12. Jan 01:54 /usr/lib64/libmad.so -> libmad.so.0

rpm -qf /usr/lib64/libmad.so
file /usr/lib64/libmad.so is not owned by any package

So this symlink must have been set by myself some time ago (and I forgot about it) or it might be some “leftover” from an older version.

However, some more research shows, that this file has been moved to the package “libmad-devel”, so try installing that one and see what that does to your problem.

#11

After installing libmad-devel:

$ whereis libmad.so.0 libmad.so
libmad.so: /usr/lib64/libmad.so.0 /usr/lib64/libmad.so
libmad: /usr/lib64/libmad.a /usr/lib64/libmad.so

And now:

$ sox -t mp3 test.mp3 test.wav
$ file test.wav
test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 44100 Hz

Beautiful. Thanks for the help.

–chriscrutch