Convert 3GPP Multimedia (.3gpp) to Advanced Audio Coding (.aac) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .3gpp 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 .aac file when it's ready.
3GPP files contain multimedia from GSM/WCDMA mobile networks, storing H.263 or H.264 video alongside AMR or AAC audio. AAC (Advanced Audio Coding) is the successor to MP3, delivering superior audio quality at equivalent bitrates and serving as the standard audio format for YouTube, Apple Music, and most streaming services. Extracting the audio from a 3GPP file into AAC produces a modern, compact audio file optimized for today's platforms.
You may have GSM-era phone recordings with audio content worth preserving — interviews, voice notes, musical performances, or ambient recordings. Extracting this audio to AAC isolates the sound from the video and packages it in a universally supported format. AAC's encoding efficiency means you get smaller files at better quality compared to MP3.
AAC is also the required audio format for many delivery platforms. Apple's ecosystem (iTunes, Podcasts, Apple Music) expects AAC. YouTube's audio processing pipeline optimizes for AAC input. By converting directly to AAC, you prepare the audio for immediate distribution without intermediate format conversions.
FFmpeg reads the 3GPP container, drops the video stream entirely, and processes the audio track. If the source audio is already AAC, the stream can be extracted without re-encoding (stream copy). If the source is AMR, FFmpeg decodes the AMR data and re-encodes to AAC using the native encoder at the requested bitrate. Common output settings are 128-256 kbps stereo for music or 64-96 kbps mono for speech.
When stream-copying AAC audio from the 3GPP source, quality is identical to the original. When transcoding from AMR (8 kHz, narrowband), the AAC output preserves the source fidelity faithfully — the narrowband character remains because the original recording captured a limited frequency range. AAC at 128 kbps is transparent for this type of content.
| Device | 3GPP | AAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | 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
Extracting 3GPP audio to AAC is efficient, fast, and produces files that work natively across Apple devices, web browsers, and all major streaming platforms.
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| No |
8MB free, 50MB Nitro
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| Funktion | 3GPP | AAC |
|---|---|---|
| Fulde navn | 3GPP Multimedia File | Advanced Audio Coding |
| Filendelse | .3gpp | .aac |
| Bedst til | Mobile standard | Superior to MP3 |