File Extension Library


.MP4B File Extension

  • Developer by: Apple, Inc.
  • Category: Audio and sound Files

What are .MP4B files and how to open them?

Can't open .MP4B file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .MP4B file.

What is a .MP4B file extension?

.MP4B file extension is created by Apple, Inc.. .MP4B has been classified as Audio and sound Files.

.MP4B is MPEG-4 Audio Layer bookmarkable data

The mp4b file format is similar to files using m4a file extension.

The difference is however, that the mp4b files can be bookmarked and thus are mostly used for audio books, podcasts and any other audio work.

The default file extension for MPEG-4 Audio Layer bookmarkable file is m4b.


How to open:

Use QuickTime to work with *.mp4b bookmarkable data.

How to convert:

Use compatible tools to export mp4b files to other formats.

How to fix problems with .MP4B files

  1. You need to update the application that you normally use to open .MP4B files. Only the latest version of the software supports the current .MP4B file format
  2. You need to check the .MP4B file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)