Convert XviD MPEG-4 Video (.xvid) to Adaptive Multi-Rate Audio (.amr) online for free. Fast, secure video conversion with no watermarks or registration.
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XviD is the open-source MPEG-4 Part 2 codec that scene release groups used to encode DVD rips into 700 MB AVI files throughout the 2000s. The name — DivX spelled backwards — reflects its origin as a community-driven alternative to the proprietary DivX codec. XviD files typically contain full-bandwidth MP3 audio designed for desktop playback through computer speakers or home theater systems.
AMR (Adaptive Multi-Rate) is the voice codec behind GSM cellular calls, operating at a fixed 8 kHz sample rate with bitrates from 4.75 to 12.2 kbps. Converting XviD to AMR aggressively compresses the audio down to telephony-grade quality, producing extremely compact files suitable only for speech content on cellular devices and legacy voicemail systems.
AMR serves a single purpose: ultra-compact voice encoding for cellular and telephony systems. XviD files containing spoken content — lectures, interviews, conference recordings — can be reduced to tiny AMR files for distribution on feature phones or integration into mobile voicemail and IVR systems.
The conversion is extreme: AMR at 12.2 kbps is roughly 10x more compressed than MP3 at 128 kbps, and the 8 kHz sample rate captures only voice frequencies (300-3400 Hz). Music, sound effects, and environmental audio are effectively destroyed. This makes AMR appropriate only when the spoken word is the sole content of value and extreme file size reduction is essential.
FFmpeg extracts the audio stream from the XviD AVI container (typically MP3 at 128-192 kbps), decodes it to PCM, resamples from the original 44.1 kHz or 48 kHz down to 8 kHz, downmixes stereo to mono, and re-encodes using the AMR-NB (Narrowband) codec via libopencore-amrnb. The output is a raw AMR file with its characteristic "#!AMR\n" header. All frequency content above 3400 Hz is permanently discarded by the 8 kHz resampling.
AMR encoding reduces audio to telephone quality. From XviD's typical MP3 at 128-192 kbps (full 20 Hz-16 kHz bandwidth), AMR at 12.2 kbps captures only the 300-3400 Hz voice band at a single channel. Music, sound effects, and background audio are severely degraded or eliminated. This is suitable only for clear speech in quiet recordings — anything else sounds noticeably poor.
| Device | XviD | AMR |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
XviD to AMR conversion is a specialized operation that extracts voice content from open-source era video files at extreme compression ratios, trading all audio fidelity for the smallest possible voice files compatible with cellular telephony systems.
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Her Yerde Çalışır
| No |
Herhangi bir tarayıcı, herhangi bir cihaz
| Özellik | XviD | AMR |
|---|---|---|
| Tam Ad | XviD MPEG-4 Video | Adaptive Multi-Rate Audio |
| Uzantı | .xvid | .amr |
| En İyi Kullanım | Open source | Speech optimized |