Convert FLV to MP3 Online Free
Extract the audio track from FLV video files and save as MP3. Server-side conversion powered by FFmpeg delivers reliable results with no software to install.
ChangeThisFile extracts audio from your Flash Video file and saves it as MP3 using FFmpeg on our secure servers. Perfect for pulling audio from legacy FLV recordings or downloaded clips. Files are encrypted during transfer and auto-deleted afterward, free with no signup required.
Convert FLV to MP3
Drop your FLV file here to convert it instantly
Drag & drop your .flv file here, or click to browse
Convert to MP3 instantly
FLV vs MP3: Format Comparison
Key differences between the two formats
| Feature | FLV | MP3 |
|---|---|---|
| Content type | Video + audio | Audio only |
| Codec | H.264/VP6/Sorenson Spark | MPEG-1 Audio Layer III |
| File size | Large (video data) | Small (audio only) |
| Compression | Lossy | Lossy |
| Typical use | Video playback | Music / audio playback |
| Compatibility | None (Flash deprecated) | Universal |
When to Convert
Common scenarios where this conversion is useful
Extract audio from FLV video
Pull the audio track from FLV video files and save as MP3 for music, podcasts, or voice recordings.
Create podcast episodes from video
Record video interviews and extract the MP3 audio for podcast distribution on Spotify, Apple Podcasts, etc.
Background music extraction
Extract background audio or soundtracks from FLV videos for use in other projects or personal listening.
Transcription preparation
Extract audio as MP3 before sending to speech-to-text services for transcription.
How to Convert FLV to MP3
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1
Upload your FLV file
Drag and drop your .flv file onto the converter, or click to browse. Files up to 50 MB are supported for free.
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2
Server-side conversion
Your file is securely uploaded and converted on our servers using FFmpeg, the industry-standard multimedia framework. This typically takes a few seconds.
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3
Download the result
Once conversion is complete, click Download to save your .mp3 file. The uploaded file is automatically deleted from our servers.
Frequently Asked Questions
Yes, completely free. Convert FLV to MP3 with no cost, no signup, and no watermarks.
No. Files are automatically deleted immediately after conversion. Nothing is stored or retained.
Yes. Files are transferred over encrypted HTTPS connections. Your data is protected in transit.
The conversion uses FFmpeg, the industry-standard multimedia framework on our servers, ensuring reliable and high-quality output.
Yes. The complete audio track is extracted from the FLV video and converted to MP3 format.
The audio is extracted at the original quality from the video file and encoded to MP3 with high-quality settings.
The converter uses optimal default settings for the best balance of quality and file size.
The primary (first) audio track is extracted by default.
Audio files are much smaller than video. A typical MP3 file will be roughly 1/10th the size of the original video.
The original sample rate is preserved. Most video audio uses 44.1 kHz or 48 kHz.
Currently, files are converted one at a time. Upload your next file after downloading the result.
Files up to 50 MB are supported for free conversion.
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