Convert FLV to WAV
Ethical Tube's free FLV to WAV converter saves the soundtrack of FLV videos as WAV, uncompressed audio for recording and editing. It runs entirely in your browser, so your videos are never uploaded, and it's free with no sign-up or watermark. The first conversion downloads the FFmpeg engine (10 MB) once, and it's cached after that.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- WAV, lossless
- First use
- 10 MB download, once
How it works
How to convert FLV to WAV
Add your FLV files
Drop FLV files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
WAV is already selected. There's nothing to adjust, because WAV keeps the full quality of the source.
Download your WAV audio files
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
FLV and WAV at a glance
What is an FLV file?
FLV is the Flash Video format that powered YouTube and most web video until the early 2010s. Adobe discontinued Flash in 2020 and browsers no longer play FLV, so old downloads and recordings in this format need converting to stay watchable. It opens in VLC, mpv, and some desktop media players. Browsers, phones, and QuickTime can't play it.
What is a WAV file?
WAV is an uncompressed audio format from Microsoft and IBM. It keeps the full quality of a recording, which is why studios, podcasters, and editing apps use it, but one minute of CD-quality stereo takes about 10 MB. It opens in every computer and phone, every audio editor (Audacity, GarageBand, Logic Pro, Pro Tools), and all browsers.
Good to know
What changes when you convert FLV to WAV
- Only the soundtrack is saved; the picture is dropped.
- The audio is saved as uncompressed 16-bit WAV.
- WAV is lossless, but it can't add back quality that the video's compressed audio never had, and the file will be bigger.
- FLV files are read with FFmpeg running in your browser.
- The first conversion downloads FFmpeg compiled to WebAssembly (10 MB). It's cached, so later visits start quickly.
- Copy-protected (DRM) files can't be converted.
- Very long videos can run out of memory, especially on phones.
FAQ
Questions, answered
Is this FLV to WAV converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with FFmpeg compiled to WebAssembly, so your files never leave your device. Once the page and the engine have loaded, it even works offline.
Does converting FLV to WAV lose quality?
No. WAV is lossless, so nothing is lost in the conversion. It can't add back quality that the FLV compression removed, though.
How long does it take?
When the video can be copied without re-encoding, a few seconds. Otherwise it depends on the video's length and resolution and on your device. With a hardware encoder, a 10-minute 1080p video usually takes a few minutes on a laptop.
Can I convert several FLV files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each WAV file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
Yes, in any current browser on a computer or phone. FFmpeg runs on your processor without hardware acceleration, so long videos are much faster on a computer.
What can open a WAV file?
Every computer and phone, every audio editor (Audacity, GarageBand, Logic Pro, Pro Tools), and all browsers.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and a computer can usually handle videos up to about 2 GB.
Keep converting
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