Quick Fix: Converting .m4b files using FF Multi Converter

The .m4b file format extension was originally designed for audiobooks from official online providers such as iTunes. It carries the audio properties of .mp4 with the added benefit of a layer of DRM and embedded bookmarks. If you encounter an .m4b file, playback can be an issue since most media players for iOS, Android, and Windows don't natively support the file extension.

One workaround apart from installing a dedicated app for playback is converting the file to a more universal format such as .mp3, or an open-source format such as .ogg. Unfortunately, any bookmarks are removed when you perform file conversion.




 
Note: Some users opt to break apart the audiobook to several .mp3s instead, a simple process which can be performed using Audacity.

Fedora 25 users can install FF Multi Converter for converting .m4b. FF Multi Converter is included in the RPM Fusion repository and uses encoding and decoding packages already on your system to convert multimedia to different types of file formats.

Note: Apart from having the RPM Fusion repository on your system, no additional packages are required for FF Multi Converter on a stock Fedora 25 install since dnf downloads any necessary dependencies.



The application's GUI options are friendlier than the Convert options in VLC, and ideal for users who don't need the granularity of ffmpeg on the Terminal. Although I didn't test FF Multi Converter's image and document conversion options, the image and document conversion features are an added bonus and obviously aren't found in dedicated audio converters such as Gnac and Sound Converter with LAME.


For details on Sound Converter, refer to Quick Fix: Sound Converter and LAME on openSUSE.

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