Convert Adaptive Multi-Rate Audio (.amr) to Audio Video Interleave (.avi) online for free. Fast, secure audio conversion with no watermarks or registration.
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AMR is a voice-only audio format from the mobile telephony world, while AVI (Audio Video Interleave) is Microsoft's legacy multimedia container capable of holding both audio and video streams. Converting AMR to AVI creates an audio-only AVI file — a somewhat unusual combination, but one that certain legacy media players and industrial automation systems specifically require.
Some older Windows applications, embedded industrial systems, and surveillance software only accept AVI files as input. If you need to feed a voice recording into one of these systems, wrapping the audio in an AVI container is the path of least resistance. AVI also allows you to later merge the audio with a video stream using simple tools, creating a combined multimedia file.
FFmpeg decodes the AMR audio to PCM, re-encodes it as MP3 (the most widely supported audio codec inside AVI), and wraps it in an AVI container. The output is an audio-only AVI with no video stream. Some players may display a blank screen; others will play the audio normally.
Re-encoding AMR to MP3 at 128 kbps for the AVI container introduces a second lossy compression pass. However, since AMR's bandwidth is limited to 3.4-7 kHz, the MP3 encoder has very little detail to work with, and the perceptual loss is negligible for speech content.
| Device | AMR | AVI |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
AMR to AVI conversion is a niche workflow for legacy systems. For general audio playback, AAC or MP3 are better choices.
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| No |
| Egenskap | AMR | AVI |
|---|---|---|
| Fullt navn | Adaptive Multi-Rate Audio | Audio Video Interleave |
| Filendelse | .amr | .avi |
| Best egnet for | Speech optimized | Windows native |