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File converter / Video / Audio / Convert to MP4 / AMR converter / MP4 to AMR

Convert MP4 to AMR

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Choose file to convert to .amr
or drag and drop file

You can convert MP4 file to AMR as well as to variety of other formats with free online converter.

How to convert mp4 to amr?

How to convert amr to mp4?
Step 1

Upload mp4-file

Select mp4 file, which you want to convert, from your computer, Google Drive, Dropbox or drag and drop it on the page.
Step 2

Convert mp4 to amr

Select amr or any other format, which you want to convert.
Step 3

Download your amr-file

Wait till your conversion process will be completed and click download converted amr file.

Online and free mp4 to amr converter

Fast and easy
Just drop your mp4 files on the page to convert amr or you can convert it to more than 250 different file formats without registration, giving an email or watermark.
Don't worry about security
We delete uploaded mp4 files instantly and converted amr files after 24 hours. All files transfer with secured an advanced level of SSL encryption.
All in the cloud
You don't need to install any software. All mp4 to amr conversions make in the cloud and don't use any resources of your computer.

MPEG-4 Video File

File extension .mp4
File category video
Description The MP4 files (MPEG-4 part 14 files) are the multimedia files used with multiple stations and video players simultaneously. They can store digital audio streams and digital video, and other suitable amounts of data like subtitle tracks. MP4 video format is a widespread file format due to its very own container format. It is also used with multiple platforms such as iTunes, PlayStation, and portable PSP. It is also a popular file format for streaming over the Internet. For instance, YouTube videos have MP4 extension.
Technical details The technical details of MP4 files differ in significant aspects and are unique as well, first released in 2001 under ISO/IEX 14496-1:2001 standards. It uses an AAC encoding to wear off unauthorized users from copying the data. The main purpose is streaming rather than sending video or audio information. MP4 files can be used to store audio streams and text information, subtitles, and still images. At the same time, MPEG format can’t do this. Anyhow the processing of data into MPEG-4 part 14 requires private streams such as the use of hint tracks to include the information.
Programs
Microsoft Windows Media Player
VLC media player
MPlayer
Eltima Elmedia Player
Winamp
Apple QuickTime Player
Apple iTunes
Developer Moving Picture Experts Group
MIME type
audio/mp4
video/mp4

Adaptive Multi-Rate Codec File

File extension .amr
File category audio
Description AMR is a compressed file format that functions to enhance speech coding, and it consists of multiple sampling rates narrowband devices used in encoding or decoding. Recording of AMR files can be done using mobile phones. For video and audio files to play simultaneously or accomplish random access memory, one can utilize the 3GPP format. 160 20- millisecond samples embedded in each frame are coded using AMR using ACELP, DTX, VAD, and CNG. Recorded AMR files can be converted into other files allowing their use and for them to be distributed.
Technical details AMR can encode signals ranging from 4.75 to 12.2 kbit/s with quality that begins at 7.4 kbit/s.3GPP took up file format in 1999. It is a method that is utilized by GSM and UMTS. It uses link adaptation to select one of the eight different bit rates. AMR optimizes link adaptation with the best codec devices for it to be used by radio channels and capacity requirements. This only works if the connection is good enough to prevent the loss of audio quality.
Programs
Apple QuickTime
Realplayer
VLC media Player
Main program Audacity
Developer 3rd Generation Partnership Project (3GPP)
MIME type
audio/amr

FAQ

❓ How can I convert mp4 to amr?
Firstly, select a mp4 file you want to convert or drag and drop it. Secondly, select amr or any other format you want to convert your file to. Then click convert and wait until your file is converted
⏳ How long should I wait to convert mp4 to amr?
Video conversion usually takes a few seconds. You will convert mp4 to amr very quickly.
🛡️ Is it secure to convert mp4 to amr on OnlineConvertFree?
Sure! We delete your uploaded and converted files, so nobody has access to your information. All types of conversion on OnlineConvertFree (including mp4 to amr) is 100% safe.
📱 Can I convert mp4 to amr without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including mp4 to amr) online on your computer or mobile.