How to convert MP4 files to M4R online?

Step 1.

Upload MP4-file

Click "Choose File" button to select a mp4 file on your computer. MP4 file size can be up to 50 Mb.
Step 2.

Convert MP4 to M4R

Click "Convert" button to start conversion.
Step 3.

Download your M4R

Let the file convert and you can download your M4R file right afterwards.

Information about MP4 and M4R file formats

Name MP4 M4R
Full name MP4 - MPEG-4 Part 14 M4R - MPEG 4 Ringtones Audio
File extension .mp4, .m4a, .m4p, .m4b, .m4r, .m4v .m4r
MIME type video/mp4 audio/aac
Developed by International Organization for Standardization Apple Inc.
Type of format Media container
Description MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.
Technical details Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org).
Associated programs Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player Apple QuickTime Player, Apple iTunes
Wiki https://en.wikipedia.org/wiki/MPEG-4_Part_14 http://en.wikipedia.org/wiki/MPEG-4_Part_14