FLV to MP3 Converter - Extract Audio from FLV Free

Extract audio from FLV Flash video files and convert to MP3 format online. Free, fast, and private browser-based converter — no upload needed.

Upload FLV File

Drag & drop or click to upload

Supports .flv

MP3 Bitrate

Great — Balanced quality and size. Good for most audio listening.

Result

Upload an FLV file and hit convert to extract the audio as MP3.

FLV → MP3 Audio Extraction

Flash Video files from the early web era often contain valuable audio — music, lectures, and recordings. Extract just the audio track and convert it to universally compatible MP3 format, entirely in your browser with zero privacy concerns.

Video → Audio Only

Key Features

Selectable Bitrate

Choose 128, 192, 256, or 320 kbps to balance quality versus file size for your needs.

Audio Preview

Listen to the extracted MP3 instantly in the browser before downloading to verify quality.

100% Private

All conversion happens locally via FFmpeg WebAssembly. Your video files never leave your device.

Fast Processing

How this FLV to MP3 Converter works

The FLV to MP3 Converter runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

No server interaction – data never leaves your device
Instant results since there is no network latency
Works offline once the page is loaded
Free to use with no usage limits

How to use this FLV to MP3 Converter

Upload FLV file

Drag and drop or click to select an FLV video file from your device.

Select bitrate

Choose your desired MP3 bitrate: 128, 192, 256, or 320 kbps.

Convert & download

Click Convert — preview the extracted audio and download your MP3 file.

Example Usage

Audio extracted from a Flash video tutorial for offline podcast-style listening.

Input

tutorial-video.flv (85 MB, 12:30)

Output

tutorial-video.mp3 (14.4 MB, 192 kbps)

Frequently Asked Questions

What is an FLV file?

FLV (Flash Video) is a container format originally developed by Adobe for streaming video over the internet. It was widely used on early web video platforms like YouTube before being replaced by MP4 and WebM.

Why extract audio from FLV to MP3?

FLV files often contain audio you want to keep — music, podcast recordings, or voiceovers — without the video component. Converting to MP3 gives you a compact, universally playable audio file.

What bitrate should I choose?

192 kbps offers a great balance of quality and file size for most audio. Choose 320 kbps for maximum quality or 128 kbps for the smallest file size.

Does this tool strip the video track?

Yes. The converter uses the -vn flag to discard the video stream entirely, extracting only the audio track and re-encoding it as MP3.

Is my FLV file uploaded to a server?

No. The entire conversion runs locally in your browser using FFmpeg WebAssembly. Your file never leaves your device, ensuring 100% privacy.

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The FLV to MP3 Converter is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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