3GP to MP4 (H.264) - Online Video Converter
Convert 3GP to MP4 (H.264) online. Private, client-side - no upload required. Batch conversion, quality presets, codec control.
About 3GP to MP4 (H.264)
Convert 3GP to MP4. 3GP is the 3GPP phone container for H.264 video with AAC audio. MP4 pairs H.264 video with AAC audio in the ISO base media container. H.264 has no alpha channel, so transparency is dropped..
Why convert 3GP to MP4 (H.264)?
- Smaller files with MP4 lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
3GP vs MP4 (H.264)
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | 3GP is the 3GPP phone container for H.264 video with AAC audio. | MP4 pairs H.264 video with AAC audio in the ISO base media container. |
When not to convert 3GP to MP4 (H.264)
- Skip MP4 for archival masters: lossy compression discards detail, so keep the 3GP original.
- Keep a master copy: repeated exports stack small losses, so archive 3GP before batch MP4 shares.
Limits
Starting point: 3GP - 3GP is the 3GPP phone container for H.264 video with AAC audio. Low resolutions upscale softly; keep original dimensions when possible. H.264 has no alpha channel, so transparency is dropped. Encode MP4 (H.264 / AAC) from 3GP 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.