Convert multiple wav files to one mp3 file

[jjones3535a]

Hi,
I've found examples on how to convert multiple files from one format to another, but not how to append several files into a single file.

I'm trying to convert several wav files to a single mp3 file on Windows XP.

I'm using:
ffmpeg -i *.wav out.mp3

But it is not working, the first wav file simply overwrites the second file, and no mp3 is created.

Any help would be appreciated.

Thanks.

Jim

[redwudz]

I use Audacity for that. Add in each file in a separate track, then cut and paste them to a single file. Audacity accepts WAV, MP3, Ogg and AIFF audio formats. It will output MP3 with the addition of the Lame MP3 codec.

[jjones3535a]

Thanks for the response, but I'm looking for a method to automate the process, which is why I'm hoping to use the command line ffmpeg tool. I will eventually have many wav files in many directories to convert.

Thanks.

[BJ_M]

use the dos copy command

copy /B file1.wav+file2.wav+file3.wav..........+file200.wa v /B newfile.wav

[jjones3535a]

Thanks, but that isn't working either. That will append the wav files into a single file, however, due to the nature of the wav file format the mp3 encoder (a media player) view the file as just the first wav added.

[bobkart]

You need to join the data in the WAV files. Simply joining the files doesn't quite work, since the first header will still just describe the first set of WAV data.

Most any audio editor can join WAV files. I've even written a command-line application to do it. Mine just joins them two at a time, tedious for joining many WAV files. But it would be easy to generalize it to take any number of names of WAV files to join.

[69mako]

For joining .WAV files, i use a tool call ADDaWAV. I've added up to 30 .WAV into one. As for converting to mp3, any audio editor should be able to do it.

Mako

[Soopafresh]

shntool

http://www.etree.org/shnutils/shntool/dist/win32/shntool-3.0.0.zip

shntool join -stdout -o wav -nopad *.wav | ffmpeg -i - -vn -ac 2 -ab 384 -y output.mp3

"filenames can now be sorted automatically using
a natural sorting algorithm, which orders filenames containing numbers the
the same way a human would, e.g. "t1.wav, t2.wav, ... t10.wav" instead of
"t1.wav, t10.wav, t2.wav, ...""

[bobkart]

Sweet!

[Soopafresh]

Hold on... I'm trying it out right now. Maybe my syntax or source files are bad.

[Bjs]

So no-one use's besweet's batch mode ?

It can output them as a single file .

[Soopafresh]

LOL You're probably right, but why do something with a GUI when the command line is so much more PITA ?

Had to use an earlier version of shntool (v2.x), plus ffmpeg didn't like stdin audio, so it has to be done in 2 steps

shntool join -o wav -nopad *.wav

ffmpeg -i joined.wav -ac 2 -ab 320 -y joined.mp3

[GTRBudda]

Perhaps Winamp's Disk Writer plugin set to single file mode?