3GP to AIFC Converter
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Supports: 3GP, 3G2
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Need help?3GP to AIFC Converter
A 3GP file is a 3GPP mobile container that wraps a video track and an audio track — usually AMR speech or low-bitrate AAC. This tool extracts that audio track and writes it as an AIFC (AIFF-C) file: the video is discarded and the audio is decoded to uncompressed PCM, the format macOS and pro-audio editors expect. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark.
One honest caveat up front: AIFC is a lossless container, so decoding low-fidelity 3GP audio into it makes the file larger without adding any quality back. If you just want a small, shareable clip from a phone recording, convert the 3GP to MP3 or to M4A instead. Choose AIFC only when an Apple/SGI audio editor specifically needs an AIFF-family file.
3GP (Source) Format at a Glance
| Property | Value |
|---|---|
| Full name | 3GPP multimedia file (.3gp / .3g2) |
| Standardized by | 3rd Generation Partnership Project (3GPP / 3GPP2) |
| Container family | ISO base media (MP4-derived) |
| Typical video | H.263, MPEG-4 Part 2, or H.264 |
| Typical audio | AMR-NB, AMR-WB, or AAC-LC |
| AMR-NB sample rate | 8 kHz (narrowband speech) |
| AMR-NB bitrate | 4.75–12.2 kbit/s (speech-optimized) |
| Best for | Recordings from older 3G feature phones |
AIFC (Output) Format at a Glance
| Property | Value |
|---|---|
| Full name | Audio Interchange File Format — Compressed (AIFF-C) |
| Developer / year | Apple Computer, 1991 (extends AIFF, 1988) |
| File extension | .aifc (also .aif / .aiff) |
| Container structure | IFF chunks; identifier AIFC, plus an FVER chunk |
| xconvert output codec | 16-bit big-endian PCM (compression type NONE) |
| Compression | Optional in the spec; this tool writes uncompressed PCM |
| Native support | macOS (QuickTime, Music, Logic), most pro-audio DAWs |
| Best for | Editing and archival inside Apple/SGI audio workflows |
How to Convert 3GP to AIFC
- Upload Your 3GP File: Drag and drop your .3gp or .3g2 file onto the page, or click "+ Add Files" to pick it from your device. You can queue several clips and convert them with the same settings.
- Set the Audio Channel: Leave "Audio Channel" on ORIGINAL to keep the source layout, or pick MONO — most 3GP phone recordings are already mono speech, so MONO usually costs nothing and halves the file size.
- Set the Audio Sample Rate (Optional): Leave "Audio Sample Rate" on ORIGINAL, or use "Trim" to clip a start time and duration if you only need part of the recording. Note that raising the sample rate above the 3GP source (often 8 kHz for AMR) cannot restore detail that was never recorded.
- Convert and Download: Click "Convert" and download your .aifc file. No sign-up, no watermark.
Frequently Asked Questions
Why is my AIFC file bigger than the original 3GP?
Because AIFC stores uncompressed PCM. 3GP audio is heavily compressed (AMR speech runs as low as 4.75 kbit/s; AAC is also lossy), so unpacking it into 16-bit PCM produces a much larger file. The extra bytes are zero-padding around the original signal — they do not add fidelity. If size matters, keep the audio compressed by converting to MP3 or M4A instead.
Will this recover or improve the audio quality?
No. Decoding to PCM is mathematically faithful to whatever was in the 3GP, but it cannot reconstruct detail that lossy AMR or AAC encoding already discarded. AMR-NB in particular is narrowband (8 kHz, 200–3400 Hz) and tuned for speech, so a converted recording stays speech-grade no matter what container holds it.
What's the difference between AIFC and AIFF here?
Both are Apple's IFF-chunk audio formats; AIFF (1988) carries only uncompressed PCM, while AIFF-C / AIFC (1991) adds a field that can name a compression codec. In our testing, this converter writes AIFC with the NONE compression type — i.e. plain 16-bit big-endian PCM — so the result is effectively a lossless file that also opens anywhere AIFF does.
Does the converter keep any video from the 3GP?
No. This is an audio-extract conversion: the video track is dropped and only the audio is written to the AIFC. If you want to keep the picture, convert the 3GP to a video format such as MP4 instead.
Why would I choose AIFC over WAV or MP3?
AIFC is the AIFF-family format Apple software expects, so it's the natural choice if you're editing in Logic, GarageBand, or another macOS DAW. WAV is the equivalent uncompressed format on Windows. MP3 or M4A are the right picks when you want a small file for sharing or playback rather than an editing master.
Are my files kept after the conversion?
No. Uploads travel over an encrypted connection and are processed on our servers, then deleted automatically after a few hours. Conversions need no sign-up and add no watermark, and files are never shared or made public.
What inputs does this tool accept?
It accepts .3gp and .3g2 files. 3G2 is the 3GPP2 (CDMA) variant of the same container and is handled the same way — the audio track is extracted and written to AIFC regardless of which variant you upload.