Convert MP4 to AMR Online — Free
Fast, free MP4 to AMR converter. No registration required.
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How to Convert
Upload your .mp4 file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .amr file when it's ready.
What is MP4?
MP4 is the most widely used video container format. It stores video, audio, subtitles, and metadata. Compatible with virtually every device and platform, from smartphones to smart TVs.
Format Details
- Full Name
- MPEG-4 Part 14
- Extension
- .mp4
Key Features
- Universal compatibility
- Streaming support
- Small file sizes
- Hardware-accelerated playback
What is AMR?
AMR is an audio format optimized for speech encoding. It's commonly used for voice recordings on mobile phones and VoIP applications.
Format Details
- Full Name
- Adaptive Multi-Rate Audio
- Extension
- .amr
Key Features
- Speech optimized
- Mobile phones
- Small files
- Voice recording
MP4 vs AMR
| Feature | MP4 | AMR |
|---|---|---|
| Full Name | MPEG-4 Part 14 | Adaptive Multi-Rate Audio |
| Extension | .mp4 | .amr |
| Best For | Universal compatibility | Speech optimized |