How to convert MP4 to AMR
- Add your .MP4 file - drop it in the box above or click to browse.
- Convert it to .AMR in a few seconds.
- Download your new .AMR file.
What to expect
- AMR is a low-bitrate mono speech codec; music and high-fidelity audio degrade badly.
- The video track is discarded and the audio is downsampled for speech.
- Best suited to voice content where small size matters more than quality.
Frequently asked questions
How good does MP4 audio sound after converting to AMR?
AMR is a narrow-band speech codec tuned for voice at very low bitrates, so quality drops noticeably and music sounds poor. It is acceptable for spoken-word recordings, not for music or high-fidelity audio.
Why convert an MP4 to AMR?
AMR is the voice format used by GSM and 3G phones, so people use it for compact voice recordings or older-phone compatibility. The gain is a tiny file size and phone compatibility, not sound quality.
Where can I play an AMR file?
VLC plays AMR on all platforms for free. Many mobile phones open it natively since it is their native voice-recording format.
What is lost in this conversion?
The video is removed, stereo is collapsed to mono, and the audio is downsampled to a low speech bitrate. Fine detail and any music content are heavily degraded.
Programs that convert MP4: FormatFactory · MediaCoder · SUPER · VIP Video Converter · Freemake Video Converter · Softe Audio Tools · Mobile Media Converter for Mac · Tiny Audio Converter
