Convert Apple Lossless Audio Codec (.alac) to 3GPP Multimedia (.3gp) online for free. Fast, secure audio conversion with no watermarks or registration.
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Choose your output settings. The default settings work great for most files.
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ALAC (Apple Lossless Audio Codec) is Apple's lossless compression format, open-sourced in 2011, storing bit-perfect audio in M4A containers at roughly 50% of raw PCM file size. ALAC is the native lossless format for Apple Music's Lossless tier and plays natively on every Apple device. 3GP is the lightweight multimedia container designed by the 3rd Generation Partnership Project for mobile phones on 3G networks.
Converting ALAC to 3GP transcodes lossless Apple audio into a mobile-friendly format using AMR or low-bitrate AAC codecs. This bridges Apple's lossless ecosystem with legacy mobile infrastructure, enabling playback on older feature phones and compatibility with MMS gateways.
ALAC files cannot be played on legacy feature phones or processed by MMS gateways. These systems expect 3GP containers with AMR or low-bitrate AAC audio. Converting ALAC to 3GP makes your high-quality Apple audio accessible to constrained mobile environments.
Since ALAC starts from lossless quality, the 3GP output benefits from the best possible source material. Unlike converting from MP3 or AAC to 3GP (which compounds lossy artifacts), ALAC-to-3GP produces a single-generation lossy encode from a perfect source.
FFmpeg decodes ALAC to full PCM (preserving the original lossless quality), then encodes to AMR-NB (8 kHz mono, 4.75-12.2 kbps), AMR-WB (16 kHz mono, 6.6-23.85 kbps), or AAC-LC within a 3GP container. Since ALAC is lossless, the decode step produces perfect PCM — the only quality loss occurs in the 3GP encoding stage. This produces better results than converting from a lossy source.
Starting from lossless ALAC means the 3GP output is the best possible quality for the target codec and bitrate. AMR-NB remains narrowband (300-3400 Hz) regardless of source quality — suitable only for speech. AMR-WB (50-7000 Hz) captures more of the lossless source. AAC-LC at 64-128 kbps in 3GP provides the best quality option for both speech and music.
| Device | ALAC | 3GP |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Native |
| 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
ALAC to 3GP leverages lossless source quality to produce the best possible 3GP output. Use AAC-LC within 3GP for the highest quality when the target device supports it.
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| No |
| Ominaisuus | ALAC | 3GP |
|---|---|---|
| Koko nimi | Apple Lossless Audio Codec | 3GPP Multimedia |
| Tiedostopääte | .m4a | .3gp |
| Paras käyttökohde | Lossless | Mobile optimized |