Convert any audio file to FLV format online for free. Fast, secure, and easy-to-use audio to FLV converter with no software installation required.
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Max file size: 50 MBMax duration: 30 min
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Drag and drop your 3GP file, or click to browse for it.
Choose FLV as the output and click Convert. The conversion runs on our servers, so your device does none of the work.
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Your file is used only to make your conversion. It is never published or shared, and the download link expires after one hour.
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How the two formats differ on the things that change your result.
| Specification | 3GP (source) | FLV (result) |
|---|---|---|
| Container | 3GPP | Flash Video |
| Developed by | 3GPP | Adobe (Macromedia) |
| Introduced | 2001 | 2002 |
| Video codecs | H.263, MPEG-4 Part 2, H.264 | H.264, Sorenson Spark, VP6 |
| Audio codecs | AMR-NB, AMR-WB, AAC-LC | AAC, MP3 |
| Max resolution | Standard definition | Full HD (1080p) |
| Typical bitrate (1080p) | 0.2–2 Mbps | 1–8 Mbps |
| Multiple audio tracks | No | No |
| Subtitle tracks | Limited support | Not supported |
| Chapter markers | No | No |
| Streaming optimized | Yes | Yes |
| Licensing | Patent-licensed | Proprietary |
| Plays natively on | Native: Android · Needs a player: Windows, macOS, iOS | Needs a player: Windows, macOS |
| Best for | phone recordings, low-bandwidth delivery, older phones | legacy archives, web archives |
Because FLV supports H.264 just like 3GP does, the video stream can be carried across without a quality-costing re-encode.
Embedded subtitle tracks will be lost. 3GP can carry them inside the file; FLV has no place to store them, so export them separately first if you need them.
At 1080p, 3GP typically runs around 1.1 Mbps while FLV sits near 4.5 Mbps, which is the main driver of the size difference you will see.
This is an older container, introduced in 2002, and browsers will not play it directly. It is best suited to archival or a dedicated player.
This page converts 3GP video, stored in the 3GPP container since 2001, into FLV, which uses Flash Video and dates from 2002. The codecs each container accepts decide whether the picture has to be re-encoded.
3GP comes from 3GPP and dates to 2001. It usually holds H.263, MPEG-4 Part 2, or H.264 video with AMR-NB, AMR-WB, or AAC-LC sound, and those streams set the ceiling for anything converted out of it.
FLV comes from Adobe (Macromedia) and dates to 2002. It holds H.264, Sorenson Spark, or VP6 video alongside AAC or MP3 audio, and every major platform needs a media player such as VLC to open it.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
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