Convert any video file to MP3 format online for free. Fast, secure, and easy-to-use video to MP3 converter with no software installation required.
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Max file size: 50 MBMax duration: 30 min
Sign up for increased limitsA free account gets you up to 50 MB and 30 min.
Drag and drop your FLV file, or click to browse for it.
Choose MP3 as the output and click Convert. The conversion runs on our servers, so your device does none of the work.
Download your converted file instantly. The download link expires in 1 hour for security.
Our powerful servers process your files quickly, delivering converted files in seconds.
Convert your files completely free with no hidden costs or subscription fees.
Your file is used only to make your conversion. It is never published or shared, and the download link expires after one hour.
Works directly in your web browser. No software download or installation required.
How the two formats differ on the things that change your result.
| Specification | FLV (source) | MP3 (result) |
|---|---|---|
| Container | Flash Video | MPEG-1/2 Audio Layer III |
| Developed by | Adobe (Macromedia) | Fraunhofer IIS / MPEG |
| Introduced | 2002 | 1993 |
| Audio codecs | AAC, MP3 | MP3 |
| Compression | Lossy | Lossy |
| Typical bitrate | 128–384 kbps | 128–320 kbps |
| Approx. file size | 7.5–60 MB per minute | 0.96–2.4 MB per minute |
| Metadata / tags | — | ID3v2 |
| Licensing | Proprietary | Patents expired |
| Plays natively on | Needs a player: Windows, macOS | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs |
| Best for | legacy archives, web archives | music libraries, podcasts, sharing with anyone |
Only the soundtrack survives: the video stream is dropped, and the AAC audio inside the FLV file is re-encoded as MP3.
The size drop is dramatic because the video stream is where nearly all the data lives. A minute of FLV runs around 34 MB; the extracted MP3 is roughly 1.7 MB per minute.
This tool takes the audio track from inside a FLV file, a Flash Video container from 2002, and saves it on its own as MP3. Everything visual is left behind.
FLV comes from Adobe (Macromedia) and dates to 2002. It usually holds H.264, Sorenson Spark, or VP6 video with AAC or MP3 sound, and those streams set the ceiling for anything converted out of it.
MP3 comes from Fraunhofer IIS / MPEG and dates to 1993. It carries lossy-compressed audio (MP3), and without installing anything it plays on web browsers, Windows, macOS, iOS, Android, and smart TVs.
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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