Extract Audio from 3GP to AIF — Free Online Tool
Extract audio from 3GP mobile video files and save it as a lossless AIF file using PCM encoding. This conversion upgrades the compressed AAC audio from your 3GP file into uncompressed 16-bit big-endian PCM, making it suitable for professional audio editing on Mac systems.
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FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
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Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
3GP files typically carry AAC-encoded audio, a lossy compressed format optimized for 3G mobile networks where bandwidth and storage were limited. During this conversion, FFmpeg discards the video stream entirely and decodes the AAC audio to raw PCM samples, then writes them into an AIF container using 16-bit big-endian PCM (pcm_s16be). This is a decode-then-re-encode operation: the compressed AAC audio is fully decoded to uncompressed PCM. The AIF output will not recover detail that was lost when the audio was originally compressed into AAC, but it will be fully uncompressed and lossless from this point forward — ideal for importing into audio editors like Logic Pro or GarageBand without any further generation loss.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg tool. In the browser, this runs via FFmpeg.wasm compiled to WebAssembly, so no installation is needed. When running locally, this assumes FFmpeg is installed and available in your system PATH. |
-i input.3gp
|
Specifies the input 3GP file. FFmpeg will read the file's container structure, identify the video stream (typically H.264) and the audio stream (typically AAC), and make both available for processing. |
-vn
|
Disables video output entirely. Since AIF is an audio-only container, this flag tells FFmpeg to ignore the H.264 or MJPEG video stream from the 3GP file and only process the audio track. |
-c:a pcm_s16be
|
Sets the audio codec to PCM signed 16-bit big-endian, which is the standard uncompressed audio encoding used inside AIF files. This decodes the lossy AAC audio from the 3GP and writes it as raw, uncompressed PCM samples in the byte order Apple's AIF format requires. |
output.aif
|
Specifies the output filename with the .aif extension. FFmpeg uses this extension to determine that the output container should be AIF, and pairs it with the pcm_s16be codec to produce a valid, Mac-compatible lossless audio file. |
Common Use Cases
- Import audio from an old 3GP video recorded on a Nokia or early smartphone into Logic Pro or GarageBand for editing, since those apps work natively with AIF files
- Archive 3GP field recordings or voice memos from early mobile phones in an uncompressed format before the 3GP files degrade or become unplayable on modern devices
- Extract interview audio recorded on a 3G-era mobile phone into AIF for use as a lossless master before distributing compressed copies in other formats
- Pull the audio track from a 3GP MMS video clip to use in a Mac-based podcast or audio production workflow where AIF is the preferred working format
- Convert a batch of 3GP lecture or meeting recordings into AIF so they can be cleaned up with professional audio tools without introducing additional lossy compression artifacts
- Prepare 3GP audio content for use in Apple's ecosystem, where AIF is a first-class format supported natively by macOS and professional audio applications
Frequently Asked Questions
No — converting from 3GP to AIF will not recover audio quality that was lost when the audio was originally compressed into AAC inside the 3GP file. AAC is a lossy codec, so some detail was discarded at the time of recording. The AIF file will be an uncompressed representation of that AAC audio, meaning it will be lossless going forward, but the starting quality is bounded by the original 3GP's audio bitrate, which was typically 64kbps or lower on mobile devices.
3GP files use AAC audio compression, which can store audio at 64kbps or less. AIF with pcm_s16be is completely uncompressed, storing every sample as a raw 16-bit integer — roughly 1,411kbps for stereo audio at 44.1kHz. This means the AIF file can be 20 to 30 times larger than the audio portion of the original 3GP, which is normal and expected for uncompressed audio formats.
AIF has limited metadata support compared to modern formats, and 3GP metadata tags do not map cleanly to AIF's ANNO and NAME chunk structure. FFmpeg will attempt to carry over basic metadata, but fields like artist, album, or GPS location tags common in 3GP files are likely to be lost or ignored during this conversion. If metadata preservation is important, consider inspecting the output with a tool like MediaInfo before discarding the source 3GP.
pcm_s16be stands for PCM signed 16-bit big-endian, which is the standard PCM encoding used in the AIF format. 'Big-endian' refers to the byte order Apple's AIF specification requires, as opposed to WAV which uses little-endian PCM. For most use cases — voice recordings, interviews, general mobile audio — 16-bit is sufficient. If you need higher bit depth for professional audio work, you can substitute pcm_s24be or pcm_s32be in the command.
Replace pcm_s16be in the command with another supported PCM codec to change the bit depth. For example, use pcm_s24be for 24-bit audio (the professional standard for recording and editing) or pcm_s32be for 32-bit integer PCM. The full command would look like: ffmpeg -i input.3gp -vn -c:a pcm_s24be output.aif. Note that since the source AAC audio in 3GP is rarely encoded at more than 16-bit equivalent quality, increasing the bit depth adds file size without restoring lost detail.
Yes. On macOS or Linux, you can use a shell loop to process multiple files: for f in *.3gp; do ffmpeg -i "$f" -vn -c:a pcm_s16be "${f%.3gp}.aif"; done. On Windows Command Prompt, use: for %f in (*.3gp) do ffmpeg -i "%f" -vn -c:a pcm_s16be "%~nf.aif". The browser-based tool processes one file at a time, so the FFmpeg command is especially useful when you have a large collection of 3GP files to convert.
Technical Notes
3GP was designed by the 3GPP consortium for mobile video on 3G networks, and its audio is almost always AAC encoded at low bitrates — commonly 64kbps or below — to minimize file size for MMS and streaming. When FFmpeg decodes this AAC stream, it produces 32-bit floating-point PCM internally, which is then quantized to 16-bit signed big-endian integers for the AIF output. The sample rate of the output AIF will match whatever sample rate was used in the 3GP file, which is frequently 8kHz or 16kHz for voice recordings or 44.1kHz for music content. AIF is a container defined by Apple and is based on the EA IFF 85 specification; it uses big-endian byte ordering, which differs from WAV's little-endian PCM and is why the codec flag explicitly specifies 'be' (big-endian). AIF does not support multichannel audio beyond stereo in most implementations, but this is rarely a concern since 3GP files only support a single audio track and are typically mono or stereo. The -vn flag is essential here because FFmpeg would otherwise attempt to include the video stream, which AIF cannot contain.