M4B to MP3 (chapter separation), Converting M4B to multiple MP3s taking into account the M4B chapters Options

[jaime11]

Hello
I have been searching on the forum but haven't found anything. Basicly what I'm looking for is a program that will input a M4B file and output several MP3 files (1 MP3 per chapter in the M4B file).
I have been using Free M4B to MP3 Converter, but unfortunately, all it does is extract a single MP3 from the M4B.

Anyone knows any other programs for this job?

Thank you

[valekhz]

If anyone is still interested I wrote a little python script to do this. You can find the git repository here: https://github.com/valekhz/m4b-converter. If you don't use git you can just download the python file here: https://github.com/valekhz/m4b-converter/raw/master/m4b.py.

You'll need python (only tested with 2.7 so far) and ffmpeg. Place the m4b.py somewhere and drag your *.m4b file onto m4b.py, or use the command line. There's a README in the git repository for more info on how to use it. I haven't been able to test that many .m4b files yet but those I've tried have worked great. I've tested it on Windows 7 and Ubuntu.

Basically it works by parsing the output of ffmpeg -i file.m4b to get the chapter data, encodes the audio and splits it based on the data from ffmpeg. Sorry if the code is a bit messy, haven't been coding in python for a while.

[nbarzgar]

If anyone is still interested I wrote a little python script to do this. You can find the git repository here: https://github.com/valekhz/m4b-converter. If you don't use git you can just download the python file here: https://github.com/valekhz/m4b-converter/raw/master/m4b.py.

You'll need python (only tested with 2.7 so far) and ffmpeg. Place the m4b.py somewhere and drag your *.m4b file onto m4b.py, or use the command line. There's a README in the git repository for more info on how to use it. I haven't been able to test that many .m4b files yet but those I've tried have worked great. I've tested it on Windows 7 and Ubuntu.

Basically it works by parsing the output of ffmpeg -i file.m4b to get the chapter data, encodes the audio and splits it based on the data from ffmpeg. Sorry if the code is a bit messy, haven't been coding in python for a while.

Thank you, I also have been looking for this for weeks!
Now my problem: I get the message "no chapter information found", although iTunes shows them and ffmpeg parses a 'subtitle' stream... What can I do?
File-Info:
m4b_Info.txt


By the way, for other newbies in Python - like me - here a few (Windows-)hints:
1. DL Python 2.7 and install to directory of your choice.
2. The 'PATH' means the directory, where the Python-executable is stored (in my case it was the 'Python 2.7' dir created on HDD during install).
3. Download 'ffmpeg.exe' from here (for example, other sites exist) and put it in the same dir, as the Python-executable, i.e. the 'PATH'.
4. Put m4b.py into any directory, which has enough space for the .mp3-output files (of course, as valekhz points out you may change the output-dir by editing the .py file, but I wouldn't dare, never having come close to coding such things...)
5. Drag&drop m4b file onto the .py-file, wait (depending on CPU-power), find the new file(s) in a new subdirectory, called the same as the m4b...

Thanks again, valekhz!
Should you be able to help me on my above stated issue, I' be extremely grateful!!

This post has been edited by nbarzgar: Dec 4 2010, 08:36