FLV to MP3 Converter

Pull the audio out of legacy Flash FLV video and save it as MP3 — in your browser.
No installs, no watermarks, 100% free.

Drop your files here to upload
Video or audio — MP4, MOV, MKV, WAV, M4A…

Stop replaying it — read it instead.

Extract MP3 from FLV in three steps

FLV is the old Flash video format. This converter rescues the audio out of it as an MP3.

  1. Step 1

    Drop your FLV

    Drag in an FLV file — old downloads and saved clips work. Batches are fine.

  2. Step 2

    Keep MP3, set quality

    Choose a bitrate and hit Convert. The audio is extracted in your browser.

  3. Step 3

    Save your audio

    Each FLV becomes an MP3 to download, or grab them all as a Zip.

Rescue your old FLV files

Flash is gone, but the FLV files it left behind still hold audio worth keeping.

Old web downloads

Extract the audio from FLV clips saved in the Flash era.

Archived music

Save the sound from an old FLV music video as MP3.

Lectures & talks

Pull narration from an FLV recording into a current format.

Future-proofing

FLV barely plays anywhere now; MP3 plays everywhere.

Smaller files

Audio-only MP3 is far smaller than the FLV.

Then transcribe it

Convert to MP3 and transcribe with SlayScribe.

Why convert FLV to MP3

FLV was the format of the Flash video era — and Flash is long dead, leaving FLV files that modern browsers and players can't open. Converting them to MP3 rescues the audio into a format that plays on any device, so old recordings and music aren't lost to a defunct standard. It all runs in your browser, so your files stay private.

FLV at a glance

Full name
Flash Video (.flv)
Maker
Adobe — discontinued (Flash EOL Dec 2020)
Codecs
H.263 / VP6 video, MP3 / AAC audio
Common source
Old web downloads, archived clips
Support
Won't play in modern browsers
Output
Audio rescued → MP3 that plays anywhere

Frequently asked questions

Why won't my FLV files play?

FLV depended on Flash, which is discontinued. Converting to MP3 makes the audio playable again.

Does converting lose quality?

The audio is re-encoded once; at higher bitrates the difference is inaudible.

Is my file uploaded?

No — the FLV is processed entirely in your browser.

Can I batch convert?

Yes — add several FLV files and download as a Zip.

How large an FLV can I convert?

Up to roughly 1 GB per file, since conversion runs in memory.

Can I transcribe the audio?

Yes. Convert to MP3, then use SlayScribe.

More converters

All formats →Video to MP3WebM to MP3

Need the words, not just the audio?

SlayScribe turns any audio or video into accurate text in seconds — transcripts, captions, and subtitles in 98+ languages.