Convert 3GPP2 Multimedia (.3g2) to Apple Lossless Audio Codec (.alac) online for free. Fast, secure video conversion with no watermarks or registration.
Upload your .3g2 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 .m4a file when it's ready.
ALAC (Apple Lossless Audio Codec) compresses audio to roughly 50-60% of the original uncompressed size while preserving every single sample bit-for-bit. Converting 3G2 to ALAC extracts the audio from old CDMA phone recordings and stores it in Apple's lossless codec, which is natively supported by all Apple devices, iTunes, and Apple Music. This gives you a perfect-quality audio archive that takes up significantly less space than uncompressed WAV or AIFF.
For anyone preserving audio from legacy Verizon or Sprint flip phones, ALAC offers an ideal balance: the audio is decoded from the original AMR or AAC track and re-encoded losslessly, ensuring zero additional quality loss while keeping files manageable in size. Every Apple device from iPod nano to the latest iPhone plays ALAC natively.
ALAC sits at the intersection of quality and convenience in the Apple ecosystem. Unlike AAC, which is lossy, ALAC preserves every audio detail from the decoded source. Unlike AIFF or WAV, ALAC compresses the data by 40-50%, saving substantial disk space. If you are building an archive of legacy phone recordings on a Mac or iPhone, ALAC is the most storage-efficient way to keep perfect-quality copies.
Apple Music, iTunes, and the Files app all handle ALAC natively with full metadata support — artist, album, year, track number, and cover art. This makes it easy to organize a collection of extracted phone recordings with proper tags and find them later through standard music library search.
FFmpeg decodes the AMR-NB or AMR-WB audio from the 3G2 container, then re-encodes it using the ALAC encoder into an M4A container (MPEG-4 audio with the 'alac' codec tag). The output is typically 16-bit at 44.1 kHz. ALAC uses linear prediction and entropy coding to achieve lossless compression — the decoded output is bit-identical to the PCM input. The video track is stripped via the -vn flag.
ALAC is mathematically lossless — the decoded audio is identical to the PCM source, sample for sample. However, the ultimate fidelity is limited by the original 3G2 recording, which used low-bitrate AMR captured through a basic phone microphone. ALAC preserves exactly what was there, no more and no less. Files are roughly half the size of equivalent AIFF or WAV output.
| Device | 3G2 | ALAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| 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 ALAC is the best option for Apple users who want lossless audio preservation with manageable file sizes. It combines perfect quality retention with native Apple device support and full metadata tagging.
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Mindenhol mukodik
| No |
8MB free, 50MB Nitro
Barmely bongeszo, barmely eszkoz
| Jellemzo | 3G2 | ALAC |
|---|---|---|
| Teljes nev | 3GPP2 Multimedia | Apple Lossless Audio Codec |
| Kiterjesztes | .3g2 | .m4a |
| Leginkabb ajanlott | Mobile optimized | Lossless |