This post explains what M4B and MP4 are, how to play M4B files on Windows, and how to convert M4B to MP4 with MiniTool Video Converter, including importing files, choosing the output format, starting the conversion, and checking the converted file.

What Is M4B

M4B is an audiobook format developed by Apple for audiobooks, podcasts, and radio programs. It supports bookmarks, allowing listeners to return to a saved position.

Related Applications to Open M4B Files

  • iTunes
  • QuickTime Player
  • Windows Media Player
  • VLC Media Player

What Is MP4

MP4 is a popular multimedia container format used to store video, audio, subtitles, and images. It also supports Internet streaming and is compatible with most devices and media players.

Related Applications to Open M4B Files

  • iTunes
  • QuickTime Player
  • Windows Media Player
  • VLC Media Player
  • RealPlayer
  • …
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How to Convert M4B to MP4

MiniTool Video Converter is a professional and easy-to-use M4B to MP4 converter that is completely clean and has no ads, bundles, or watermarks. Below is a step-by-step guide on how to convert M4B to MP4 or MP4 to M4B with MiniTool Video Converter.

  1. Download and install MiniTool Video Converter.
  2. Upload source M4B audio.
  3. Choose output format.
  4. Start conversion.
  5. Check the output video.

Step 1. Download and install MiniTool Video Converter.

Get the latest version of MiniTool Video Converter.

MiniTool Video ConverterClick to Download100%Clean & Safe

Step 2. Upload source M4B audio.

Launch MiniTool Video Converter and click Add Files to import the target M4B file.

MiniTool Video Converter interface with the Add Files option selected.

Step 3. Choose output format.

Next, expand the Convert all files to option, go to the Video tab, select MP4, and choose a resolution like HD 1080P.

MiniTool Video Converter interface showing how to choose output format.

Step 4. Start conversion.

After selecting the output format and resolution, click Convert All to convert M4B to MP4 instantly.

MiniTool Video Converter Convert Video interface with Convert All option selected.

Step 5. Check the output video.

After the conversion is complete, go to the Completed tab and click the folder icon to view the converted file.

MiniTool Video Converter Convert Video interface with the folder icon selected under the Completed tab.

You can follow similar steps above to convert MP4 to M4B.

Tips:
If you want to convert files in bulk, just import them at once. Next, click the down-arrow button next to Convert All to choose your desired format, and then click Convert All to start the conversion.

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How to Open an M4B File on Windows

  1. Install and open VLC Media Player.
  2. Import the M4B file via Media > Open File.
  3. Play the M4B file in VLC.

Since M4B is an audiobook file that is used to store audiobooks downloaded from the Apple iTunes Store, opening it on Apple devices is easy. However, for some non-Apple users, how do they open an M4B file? The following content will show you how to open an M4B file on different devices.

Sometimes, the default player on Windows may not be able to play an M4B file. If you encounter that situation, just try another player. Follow the details below to play an M4B file on Windows.

Step 1: Download VLC Media Player and launch it.

Step 2: Click the Media button to expand the menu and click the Open File… button to import the target M4B file.

VLC media player interface with the Open File option selected in the Media drop down menu.

Step 3: Then you can play your M4B file on the VLC Media player.

You can open the M4B file on Windows effortlessly with the above steps.

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Conclusion

Converting M4B to MP4 can improve compatibility across devices and media players. With MiniTool Video Converter, you can convert M4B to MP4 or MP4 to M4B easily and play M4B files on Windows without hassle!

If you have any questions while using MiniTool Video Converter, contact us at support@minitool.com.

M4B to MP4 FAQ

What is the difference between M4B and MP4?
M4B is a specific file extension designed specifically for audiobooks. MP4, on the other hand, is a multimedia container format used to store video, audio, subtitles, and images. Furthermore, M4B supports bookmarks for easy resumption of playback, while MP4 is compatible with a wider range of devices and media players.
Will I lose my audiobooks' chapters when converting M4B to MP4?
Yes, converting an M4B file to MP4 will likely remove chapter markers and bookmarks. After conversion, the file usually becomes a single continuous audio or video stream.
Can I convert M4B directly in my web browser?
Yes. You can use online tools like Zamzar or FreeConvert to convert M4B to MP4 directly in your browser. Just upload the file, choose MP4 as the output format, and start the conversion.
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About The Author

Mia

Position: Columnist

Mia joined MiniTool as an SEO editor following her university graduation, bringing a strong foundation in digital content optimization. She has since developed extensive expertise in creating technical articles and delivering practical solutions for video conversion, video compression, and audio transcription. She remains current with emerging software trends and continuously refines her content strategy based on real user feedback and industry developments.

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