M4B to MP4 Converter
Turn M4B audio into a genuine MP4 video with a clean background for playback, editing, presentations, and sharing.
Drop your M4B files here
Up to 500MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your M4B files
Drag and drop or select M4B files from your device. You can upload multiple files at once.
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Configure Output
Choose an audio quality setting to balance sound quality and file size.
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Download MP4 files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert M4B to MP4?
M4B is an MPEG-4 audiobook format used by Apple Books and compatible spoken-word listening applications. Converting it to MP4 creates a widely supported video format used by phones, computers, websites, televisions, and social platforms, ready for workflows that use the destination format.
MP4 plays on iPhone, Android, Windows, Mac, smart TVs, modern browsers, and leading video-editing applications.
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Frequently Asked Questions
How do I convert M4B to MP4?
Add your M4B audio, choose your preferred quality, start the conversion, and download a genuine MP4 video with a clean background.
Which M4B files can I convert?
This converter works with Apple Books audiobooks, spoken-word recordings, audiobook libraries, and compatible M4B files. Each supported recording becomes a ready-to-use MP4 file.
What appears in the MP4 video?
Your M4B soundtrack is paired with a clean 1280 by 720 background, creating a genuine MP4 video that keeps the complete audio track.
Where can I use the converted MP4 video?
MP4 plays on iPhone, Android, Windows, Mac, smart TVs, modern browsers, and leading video-editing applications.
Can I convert several M4B files together?
Yes. Add multiple M4B files, convert them in one batch, and download each completed MP4 result separately.
Is M4B to MP4 free and secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted shortly after conversion. No account is required.