Convert 3GPP2 Multimedia (.3g2) to Audio Interchange File Format (.aiff) online for free. Fast, secure video conversion with no watermarks or registration.
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AIFF (Audio Interchange File Format) is Apple's uncompressed audio standard, storing raw PCM data at full CD quality or higher. Converting 3G2 to AIFF extracts the audio track from old CDMA phone recordings and decodes it to uncompressed PCM, producing a lossless representation suitable for professional editing in Logic Pro, GarageBand, or Pro Tools. The resulting files are significantly larger but contain every audio detail present in the original recording.
This conversion is particularly valuable when you need to process legacy phone audio in a professional digital audio workstation. Uncompressed AIFF eliminates codec overhead and allows sample-accurate editing, normalization, noise reduction, and mastering without any additional generation loss from codec re-encoding cycles.
Professional audio editors and DAWs work most reliably with uncompressed formats. While 3G2's AMR audio is already low-fidelity by modern standards, decoding it to AIFF gives you a clean, uncompressed baseline for applying noise reduction, equalization, and volume normalization without worrying about codec artifacts stacking on top of each other during re-encodes.
AIFF is also the preferred archival format in Apple-centric workflows. If you are preserving audio from legacy CDMA phone recordings — voicemails from a family member, historical voice notes, or field recordings — storing them as uncompressed AIFF ensures no further quality degradation over time and maximum compatibility with macOS audio tools for decades to come.
FFmpeg decodes the AMR-NB or AMR-WB audio stream from the 3G2 container and outputs uncompressed PCM in the AIFF container. The typical output is 16-bit signed big-endian PCM at 44.1 kHz stereo (or mono, matching the source channel count). Since AIFF stores raw samples, the output is approximately 10 MB per minute of stereo audio at 44.1 kHz/16-bit. The video track is discarded via the -vn flag, and the -acodec pcm_s16be flag specifies the AIFF-native PCM encoding.
The AIFF output preserves every detail present in the decoded AMR audio, but cannot recover information that AMR compression already discarded during the original phone recording. An 8 kHz AMR-NB track decoded to 44.1 kHz AIFF will not gain new frequency content — it simply stores the existing audio without any additional compression. File sizes will be 50-100x larger than the original 3G2 audio track.
| Device | 3G2 | AIFF |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Native | 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
Converting 3G2 to AIFF is the right choice when you need uncompressed audio for professional editing or archival. While files become much larger, AIFF provides the lossless, editor-friendly format that audio restoration and DAW workflows demand.
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8MB free, 50MB Nitro
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| Характеристика | 3G2 | AIFF |
|---|---|---|
| Повна назва | 3GPP2 Multimedia | Audio Interchange File Format |
| Розширення | .3g2 | .aiff |
| Найкраще для | Mobile optimized | Lossless quality |