Convert MPEG-4 Part 14 (.mp4) to 3GPP Multimedia (.3gp) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .mp4 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 .3gp file when it's ready.
MP4 to 3GP conversion takes the world's most popular video format and repackages it for legacy mobile devices that rely on the 3GPP standard. The 3GP container was designed by the 3rd Generation Partnership Project specifically for 3G mobile networks, where bandwidth was severely limited. While modern smartphones handle MP4 natively, millions of older feature phones and budget handsets in developing markets still depend on 3GP for video playback.
Our converter uses FFmpeg to transcode MP4 video from H.264 or H.265 into the H.263 or MPEG-4 Part 2 codecs that 3GP requires, and re-encodes audio to AMR-NB at 8 kHz. The result is a compact file that plays on virtually any phone manufactured in the last two decades.
3GP exists for one reason: delivering video over constrained mobile connections to low-powered devices. If you need to send a clip via MMS on a network that caps attachments at 300 KB, or play video on a Nokia feature phone in a region where smartphones are not widespread, 3GP is the only viable option. The format also sees use in surveillance systems and embedded devices that were designed around 3GPP decoders. Converting from MP4 trades resolution and bitrate for extreme portability.
The conversion transcodes the MP4 H.264 video stream to H.263 or MPEG-4 Visual at QCIF (176x144) or CIF (352x288) resolution, which are the standard 3GP frame sizes. Audio is re-encoded from AAC to AMR-NB at 12.2 kbps or AMR-WB at 23.85 kbps. Frame rate is typically reduced to 15 fps to keep the bitrate under 128 kbps total. FFmpeg handles the muxing into the 3GPP container with the correct file-level metadata for mobile playback.
Expect significant visual quality reduction. 3GP was never designed for high fidelity — its purpose is functional playback at the smallest possible size. Resolution drops to 176x144 or 352x288 regardless of your source MP4 dimensions. Colors may appear slightly washed due to the simpler codec profile, and fine details are lost. Audio is telephone-quality narrowband. The tradeoff is file sizes measured in kilobytes rather than megabytes.
| Device | MP4 | 3GP |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Native | Native |
| Linux | Partial | Partial |
| Web Browser | Native |
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
MP4 to 3GP conversion serves a specific niche: getting video onto devices and networks that predate modern streaming. If your audience is using legacy hardware or you need MMS-compatible video, this conversion delivers exactly what those constraints require.
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HTTPS-salatut lataukset
Yksityisyys ensin
Tiedostot poistetaan automaattisesti käsittelyn jälkeen
Ei rekisteröitymistä
Aloita muuntaminen heti
Toimii kaikkialla
| No |
8MB free, 50MB Nitro
Mikä tahansa selain, mikä tahansa laite
| Ominaisuus | MP4 | 3GP |
|---|---|---|
| Koko nimi | MPEG-4 Part 14 | 3GPP Multimedia |
| Tiedostopääte | .mp4 | .3gp |
| Paras käyttökohde | Universal compatibility | Mobile optimized |