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FLV MP3
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Convert FLV to MP3

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Verified by Adam B.· reviewed by FE Editorial ·updated Jul 2, 2026
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Is it possible to convert FLV to MP3?
Yes - FLV converts to MP3.

You can do it right here with our free converter - no sign-up, and your file is deleted right after.

Upload the FLV to our free converter above or use FFmpeg from the command line - both produce a standard MP3 in seconds. The main caveat: if the audio inside the FLV is AAC rather than MP3, a re-encode is required, which introduces a small, usually inaudible quality loss.

Also to MP3: CAF · STS · OGA

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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Why convert FLV to MP3?

FLV (Flash Video) packages audio and video together, but listeners often want only the soundtrack - a recorded speech, a music stream, or a podcast captured as video. Extracting the audio gives a compact .MP3 that plays on any device. Flash was retired in 2020, so converting to MP3 is also the practical way to archive audio from old FLV recordings.

How to convert FLV to MP3

VLC media player FREE

Go to Media > Convert/Save, add your .flv, select the Audio - MP3 profile, set a .mp3 output path, and click Start.

FormatFactory FREE

Add the .flv, choose MP3 as the target format, and click Start - FormatFactory handles both MP3 and AAC source audio.

Command line - FFmpeg CLI

Run ffmpeg -i input.flv -vn -c:a copy output.mp3 to extract the audio; if the source track is AAC, use -c:a libmp3lame instead of -c:a copy.

Programs that convert FLV

Aimersoft DRM Media Converter for Windows
Aimersoft iTransfer for Windows
FormatFactory
Free Studio
Freemake Video Converter
Hamster Free Video Converter
iPad Video Converter Factory Pro
MediaCoder

About these formats

.FLV Flash Video

An FLV (Flash Video) file is a video made for Adobe Flash Player, the format YouTube and most streaming sites used through the 2000s. Flash is dead since December 2020, but VLC media player…

Open .FLV details →
.MP3 MPEG-1/2 Audio Layer III

An MP3 file is a compressed audio recording - a song, podcast, audiobook, or ringtone. Almost every device plays it without extra software: double-click on Windows to open Media Player, on…

Open .MP3 details →

Quality & what to watch

  • FLV files can contain either MP3 or AAC audio - only FFmpeg's stream-copy mode (-c:a copy) avoids re-encoding; VLC and most GUI tools always re-encode.
  • The output quality cannot exceed the source: a 64 kbps FLV will not produce a better-than-64-kbps MP3 regardless of the encoder setting.
  • The video track is discarded entirely; keep the original .flv if you may need the video later.

Frequently asked questions

Will converting FLV to MP3 lose quality?
Not if the FLV already holds an MP3 track and you use FFmpeg with -c:a copy - the output is bit-for-bit identical. A re-encode (required when source audio is AAC) adds only a small, usually inaudible loss.
How do I know what audio codec is inside my FLV?
Run ffmpeg -i input.flv without specifying an output file; FFmpeg prints stream details including whether the audio is mp3 or aac.
Can I convert multiple FLV files at once?
Yes - FFmpeg supports batch scripting, and GUI tools like FormatFactory and Freemake Video Converter include a built-in batch queue.
What if my FLV file has no sound?
If ffmpeg -i input.flv shows no audio stream, the file is video-only and there is nothing to extract as MP3.