Convert M4B to MP4 — Free Online Converter
Convert MPEG-4 Audiobook (.m4b) to MPEG-4 Part 14 (.mp4) online for free. Fast, secure audio conversion with no watermarks or registration.
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About M4B to MP4 Conversion
M4B is technically an MP4 container with a different file extension and audiobook-specific features (chapters, bookmarks). Converting M4B to MP4 is a near-trivial container relabel — the AAC audio data is identical in both formats. The practical effect is that players and systems recognize the file as generic multimedia rather than an audiobook, enabling upload to platforms that accept MP4 but not M4B.
Why Convert M4B to MP4?
Many platforms accept MP4 but not M4B: social media, web embedding, CMS uploads, video hosting services, and learning management systems. Converting to MP4 makes audiobook content uploadable to these platforms. Some automated media pipelines only process files with the .mp4 extension. The conversion enables broader distribution of audiobook content outside dedicated audiobook platforms.
Common Use Cases
- Uploading audiobook content to platforms that accept only MP4 (YouTube, Vimeo, LMS)
- Embedding audiobook audio in HTML5 web pages using the universally recognized MP4 format
- Submitting audiobook excerpts to social media platforms that accept MP4 uploads