sox FAIL util: Unable to load MAD decoder library (libmad) function "mad_stream_buffer"

windows visual-c++ dll mp3 sox
Anderson picture Anderson · Aug 21, 2010 · Viewed 26.3k times · Source

I compiled libmad for sox. When I try to read an mp3 I get this message:

sox FAIL util: Unable to load MAD decoder library (libmad) function "mad_stream_buffer".

Did I compile the project incorrectly?

Answer

bulltorious picture bulltorious · May 29, 2014

Steps to using SOX to create MP3s:

  1. Download latest version of SOX and install.
  2. Download libmad-0.dll and libmp3lame-0.dll. The currently only known trustworthy source is ossbuild but this requires you to download a 1.5 GB archive. The selected two files are available here and here.
  3. Add libmad-0.dll and libmp3lame-0.dll to the folder where SOX was installed to.

  4. Use the command line to convert a file to .mp3:

    sox input.wav -c 2 -C 128 output.mp3

Note: -c 2 makes it stereo, -C 128 specifies output as 128 kbps MP3

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