Convert 3GP to FLV Online Free
Convert 3GP mobile video files to FLV for Flash-based video platforms, legacy streaming systems, and media archives. ChangeThisFile uses FFmpeg on secure servers for fast, private conversion.
ChangeThisFile converts 3GP to FLV free using FFmpeg on secure servers. Your mobile 3GP uploads with encrypted transfer, converts server-side to FLV format, and is auto-deleted after download. No signup or software required — private and completely free.
Convert 3GP to FLV
Drop your 3GP file here to convert it instantly
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3GP vs FLV: Format Comparison
Key differences between the two formats
| Feature | 3GP | FLV |
|---|---|---|
| Full Name | 3rd Generation Partnership Project | Flash Video |
| Designed For | Mobile video and MMS | Web streaming via Flash |
| Video Codec | H.263, H.264, MPEG-4 | H.263, VP6, H.264 |
| Audio Codec | AMR-NB, AAC | MP3, AAC, Nellymoser |
| File Size | Very small | Compact for web |
| Mobile Support | Native on phones | Requires Flash (deprecated) |
| Streaming | Not for web streaming | RTMP, progressive download |
| Player Support | Mobile devices | Flash Player (EOL), VLC |
When to Convert
Common scenarios where this conversion is useful
Legacy Flash Platform Upload
Convert 3GP mobile recordings to FLV for upload to legacy Flash-based video CMS platforms or portals that require FLV input format.
Flash Video Archive Integration
Add 3GP mobile footage to existing FLV video libraries and Flash-era archives in a consistent format.
RTMP Streaming Workflow
Prepare 3GP mobile clips as FLV for integration into RTMP streaming server workflows or legacy broadcast infrastructure.
Flash-Based E-Learning Upload
Convert 3GP training or lecture recordings to FLV for upload to e-learning systems built on Adobe Flash video delivery.
Legacy Website Video Player
Supply 3GP mobile content as FLV for embedded Flash video players on legacy websites that predate HTML5 video support.
How to Convert 3GP to FLV
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1
Upload Your 3GP File
Click to select or drag your 3GP mobile video. Files are transmitted to our servers over an encrypted HTTPS connection.
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2
FFmpeg Converts to FLV
Our servers use FFmpeg to transcode your 3GP's H.263 or H.264 video to H.264 in an FLV container with AAC audio for Flash-compatible playback.
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3
Download Your FLV File
Your converted FLV is available to download when processing finishes. The original 3GP and FLV output are both deleted from our servers automatically.
Frequently Asked Questions
FLV is required for legacy Flash-based video platforms, RTMP streaming systems, and older Flash video players. While Flash is deprecated, many archival systems still require FLV format inputs.
Yes. VLC, MPC-HC, and other modern media players support FLV playback without Adobe Flash Player, which was discontinued in 2020.
FFmpeg handles H.263, H.264, and MPEG-4 video codecs from 3GP files, along with AMR-NB and AAC audio.
The FLV output uses H.264 video with AAC audio, providing the best quality and compatibility for Flash-based platforms.
Files up to 50MB are accepted. 3GP files are typically very small, so this limit is rarely reached.
Yes. Files are uploaded via HTTPS and automatically deleted after your download. No content is retained on our servers.
3GP files are small and typically convert in under 30 seconds.
Yes. FFmpeg preserves the source 3GP resolution in the FLV output. FLV supports any resolution the source provides.
Yes. AMR-NB and AAC audio from 3GP are both supported by FFmpeg and re-encoded to AAC in the FLV output.
Yes. ChangeThisFile is 100% free — no accounts, no fees, and no watermarks on output files.
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