Convert FLV to 3GP Online Free
Convert Flash Video FLV files to compact 3GP format for mobile device playback, MMS messaging, and low-bandwidth distribution. ChangeThisFile uses FFmpeg on secure servers for fast, private conversion.
ChangeThisFile converts FLV to 3GP free using FFmpeg on secure servers. Your Flash Video uploads over an encrypted connection, converts server-side to mobile-optimized 3GP format, and is auto-deleted after download. Free, no signup, completely private.
Convert FLV to 3GP
Drop your FLV file here to convert it instantly
Drag & drop your .flv file here, or click to browse
Convert to 3GP instantly
FLV vs 3GP: Format Comparison
Key differences between the two formats
| Feature | FLV | 3GP |
|---|---|---|
| Full Name | Flash Video | 3rd Generation Partnership Project |
| Designed For | Web Flash streaming | Mobile video and MMS |
| Video Codec | H.263, VP6, H.264 | H.263, H.264, MPEG-4 |
| Audio Codec | MP3, AAC, Nellymoser | AMR-NB, AAC |
| File Size | Compact for web | Very small (mobile-first) |
| Mobile Support | Flash Player required (deprecated) | Native on feature phones |
| Typical Resolution | 240p to 1080p | 176x144 to 480x360 |
| Bitrate | Moderate | Very low |
When to Convert
Common scenarios where this conversion is useful
Mobile-Friendly Flash Archive
Convert legacy FLV web videos to compact 3GP files for mobile viewing and sharing, since Flash Player is no longer available on mobile.
MMS Video Sharing
Shrink FLV videos down to 3GP format for sending as MMS messages, which require very small file sizes.
Feature Phone Video Access
Make FLV web content accessible on older feature phones that support 3GP but cannot run Flash Player.
Low-Data Mobile Distribution
Convert FLV content to 3GP for delivery to mobile audiences with limited data plans, where minimal file sizes are critical.
Telecom Portal Submissions
Reformat FLV video content to 3GP for submission to carrier content portals and mobile video distribution platforms.
How to Convert FLV to 3GP
-
1
Upload Your FLV File
Select your Flash Video FLV by clicking or dragging it into the converter. The upload is secured with end-to-end HTTPS encryption.
-
2
Server-Side 3GP Conversion
FFmpeg on our secure servers transcodes your FLV into a 3GP container with H.264 video and AAC audio at mobile-optimized bitrates.
-
3
Download Your 3GP File
Your compact 3GP file is available to download when conversion finishes. Both the FLV and 3GP files are deleted from our servers automatically.
Frequently Asked Questions
3GP is designed for mobile phones and creates very small video files. Converting FLV to 3GP makes Flash-era web video accessible on mobile devices without Flash Player.
3GP files are typically 50-80% smaller than FLV files. The size reduction makes them ideal for MMS messages and mobile data-constrained sharing.
Yes. Most Android devices support 3GP natively. iPhone users can use VLC, as iOS doesn't support 3GP natively.
FFmpeg supports H.264, H.263, and VP6 FLV video codecs, as well as MP3, AAC, and Nellymoser audio for conversion.
Files up to 50MB are accepted. Trim large FLV files before uploading if they exceed this limit.
Yes. Files are encrypted in transit and automatically deleted from our servers immediately after your download.
Yes. FLV audio is re-encoded as AAC in the 3GP container, preserving audio content at a mobile-appropriate bitrate.
Yes. 3GP applies aggressive compression at lower bitrates suited for small mobile screens. Expect visible quality reduction compared to the FLV source.
Yes. ChangeThisFile is 100% free — no accounts, subscriptions, or watermarks.
3GP is typically output at mobile-friendly resolutions (176x144, 320x240, 480x360). The exact resolution depends on FFmpeg's optimal settings for the source.
Related Conversions
Ready to convert your file?
Convert FLV to 3GP instantly — free, no signup required.
Start Converting