3GP to MP4 Converter
Convert 3GP to MP4 online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is a 3GP file?
The 3GP format is a multimedia container defined by the 3rd Generation Partnership Project (3GPP) primarily for 3G UMTS multimedia services on GSM-based mobile networks. Ideally suited for mobile bandwidth limitations, it encapsulates video streams encoded in MPEG-4 Part 2, H.263, or H.264 (MPEG-4 AVC) and audio in AMR-NB, AMR-WB, or AAC formats. The structure is based on the ISO base media file format (MPEG-4 Part 12), prioritizing high compression ratios over high-fidelity playback to facilitate Multimedia Messaging Service (MMS) transmission.
How to open a 3GP file
Most modern mobile operating systems (Android, iOS) handle 3GP natively. On desktop systems, Microsoft Windows Media Player and Apple QuickTime provide varying degrees of support depending on the specific video codec used within the container. If native players fail to render the AMR audio track, users should utilize the VLC media player or MPlayer, which contain built-in libraries for decoding 3GPP-compliant streams.
3GP Technical Info
- Full Name
- 3rd Generation Partnership Project File Format
- Developed By
- 3GPP
- Initial Release
- 2004
- MIME Type
- video/3gpp
What is an MP4 file?
MPEG-4 Part 14 (MP4) is a digital multimedia container format defined by ISO/IEC 14496-14. Based directly on the QuickTime File Format (QTFF), it allows for streaming over the Internet and is the global standard for video compatibility. An MP4 file can store video streams (encoded with H.264/AVC, H.265/HEVC, or MPEG-4 Visual), audio streams (typically AAC or MP3), subtitles, and still images. It utilizes object-oriented structures specifically designed to support initial object descriptors (IOD) and other MPEG features.
How to open an MP4 file
MP4 is the most widely supported video format in existence. It opens natively on virtually all modern operating systems including Windows (via Movies & TV or Windows Media Player), macOS (QuickTime), Android, and iOS. Web browsers (Chrome, Firefox, Safari) also support native MP4 playback via the HTML5 video tag. No external software is generally required, though VLC Media Player is useful for MP4 files containing obscure codecs.
MP4 Technical Info
- Full Name
- MPEG-4 Part 14
- Developed By
- ISO / IEC
- Initial Release
- 2001
- MIME Type
- video/mp4
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Why RunConvert
The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
Convert 3GP to MP4 in seconds
Every 3GP to MP4 conversion runs on our servers, so your device stays fast and the output quality stays intact.
Fast, cloud-powered
No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
Secure & private
Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
Free - no account needed
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Developer API
Convert 3GP to MP4 via API
Automate 3GP to MP4 conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "3gp-to-mp4",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "mp4"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.3gp
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.
FAQ
Frequently asked questions
Common questions about converting 3GP to MP4 with RunConvert.
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