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M4A vs M4B: What is the Difference between M4A and M4B?
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M4A vs M4B: What is the Difference between M4A and M4B? How to Achieve Conversion between M4A and M4B

Author by Rocabella

Updated on July 28, 2023

The battle between M4A vs M4B has been around for a long time. So, what are the similarities and differences between the two as an audio format common on Apple devices? Follow this tutorial for details. In addition, you can download the audio converter from here to finish M4A M4B conversion at will.

M4A vs M4B, Get Confused with them?

M4A and M4B are two audio formats that are very common to Apple users. M4A and M4B are the two which look most alike, and both are Audio-only MPEG-4 (MP4) files that contain audio in AAC lossy compression format. But apart from that, they still have distinctive differences. The following will elaborate on the comparison of M4B vs M4A and explore how to convert M4A to M4B and vice versa.

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The Difference between M4A and M4B

1. M4A vs M4B - Application & Usage

M4A is used for DRM-free digital music distribution, while M4B is used to store audiobooks and audio podcasts. Both support metadata including chapter markers, images, hyperlinks, etc., but M4B allows "bookmarks" (resume playback where you left off at another time), while M4A does not.

2. M4A vs M4B - FairPlay DRM Copy Protection

M4A is DRM-free. The music file that protected by Apple's FairPlay DRM is in M4P format. Whereas, M4B has DRM-ed and DRM-free versions in audiobook and podcast files. Audio files purchased from the iTunes Store are encrypted and ones downloaded from the web are DRM-free.

3. M4A vs M4B - Encoding Method

In addition to lossy AAC audio, M4A can also contain audio data in Apple Lossless (ALAC) format, while M4B file is encoded with the AAC compression format only.

4. M4A vs M4B - Compatibility

M4A is compatible with most hardware and mobile devices, while M4B purchased from iTunes can only be placed into iTunes and devices authorized via iTunes.

Best Video Converter for DRM-free M4A M4B

After understanding the difference between M4A and M4B, you may wonder how to convert them to each other? Then you should never miss WonderFox HD Video Converter Factory Pro, a powerful audio & video processing toolbox for Windows. First of all, this software supports conversion between M4A and M4B. In addition, you can also convert M4A and M4B to other audio formats such as M4A to WAV, M4B to MP3, etc. Now, free downloadfree download and install this wonderful audio converter to start your work!

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Tutorial on How to Convert M4A and M4B Audio Formats after Getting M4A vs M4B

How to Convert M4A or M4B Audio Files

Step 1: Load Source Files into Program

Free downloadFree download, install and launch WonderFox HD Video Converter Factory Pro on your PC. Enter the "Converter" module and load the file you want to convert into program by clicking on the “Add Files” icon. Also, you can drag and drop them into the program.

Step 2: Choose an Output Format

Click on the Output Format section on the right side of the interface and select the audio format you want under Audio tab in the pop-up window.

Step 3: Finish Audio Conversion

Choose the “Output Folder” to which your converted file will save to, and finally, press Run button to finish the whole audio conversion.

More Features of HD Video Converter Factory Pro

1. The program can help you trim and merge audio files. You can also extract audio from videos in original quality.

2. The program provides you a simple and fast solution to fix the audio and video out of sync issue once and for all.

3. The program allows you to normalize audio in the simplest way.

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