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Convert amr to m4b

  1. Download and install the latest version of Filestar.

  2. Right click on one or more Amr file(s) on your desktop and select Convert with Filestar.

  3. Type convert to m4b in the search box.

  4. Press Convert.

What is the difference between .amr and .m4b?

Name
Adaptive Multi-Rate Codec File
MPEG-4 Audio Book File
Extension
.amr
.m4b
Format
Binary
Binary
Category
Audio
Audio
Developer
Nokia
Apple
Description
An AMR file is an audio file saved in a compressed audio format developed by Ericsson. It is used by many 3G cell phones for voice recordings such as MMS messages. AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.
It is an audiobook file compressed using .AAC algorithm based on MPEG-4 container format. It is similar to .M4A file but its denoted as an audiobook and supporting audio players can bookmark it.
MIME Type
audio/amr
audio/x-m4a
Sample
sample.amr
sample.m4b
Wikipedia
.amr on Wikipedia
.m4b on Wikipedia

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