File Extension M4B

Information about M4B files and how to open them

An M4B - MPEG-4 Audio Book File is a file based on the MPEG-4 container format. It is typically compressed with .AAC encoding. This file is almost an exact clone of a .M4A file; It's technical properties are very similar. The only difference is that an M4B file is specifically designed as an audiobook file. This ensures that it can be bookmarked by supporting audiobook players. This type of file extension is often used by audiobooks from the Apple ITunes store. Audiobooks sold by Apple always contain the DRM encoding, a barrier which prohibits these files from being coppied or played on unauthorized players. The only players authorized to play DRM-protected files are Ipods and other commercial devices. You can play an unprotected M4B audio file with the Winamp player on a Windows PC, but the MPEG-4 plug-in needs to be modified first. M4B audiobooks are a relatively common file format, and very accessible with most mainstream audio players.

Product(s) that can open M4B file

Microsoft Zune
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AVS Video Converter
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Microsoft Windows Media Player
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Avira AntiVir Personal Free Antivirus
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iTunes
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