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MP4 to 3GP - Online Video Converter
Convert MP4 to 3GP online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP4 to 3GP
Drop MP4 video here or click to select
MP4
3GP (H.264 / AAC)
About MP4 to 3GP
Convert MP4 to 3GP. MP4 pairs H.264 video with AAC audio in the ISO base media container. The 3GP target profile packages H.264 with AAC for legacy handsets. Resolution caps apply, so expect phone-sized output..
Why convert MP4 to 3GP?
- Smaller files with 3GP lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MP4 vs 3GP
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | MP4 pairs H.264 video with AAC audio in the ISO base media container. | The 3GP target profile packages H.264 with AAC for legacy handsets. |
When not to convert MP4 to 3GP
- Skip 3GP for archival masters: lossy compression discards detail, so keep the MP4 original.
- Keep a master copy: repeated exports stack small losses, so archive MP4 before batch 3GP shares.
Limits
Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. Resolution caps apply, so expect phone-sized output. Encode 3GP (H.264 / AAC) from MP4 at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert MP4 to 3GP?
Drop your MP4 file onto this page, choose quality and codec settings, then click Convert. The result downloads as 3GP instantly. All processing runs in your browser.
What codec is used for 3GP?
The default codec for 3GP is H.264 / AAC. You can change the video and audio codec in Advanced mode.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.