FLV
Flash video
FLV was the format behind web video in the Flash era. Flash Player was retired at the end of 2020, so FLV files no longer play in any browser.
Opens in VLC and little else since Flash Player was retired in 2020
FLV converterFLV to AAC converter, without the upload.
Pull the audio out of an FLV video as an AAC. It is converted in your browser, so the file never leaves your device.
Drop FLV files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Convert to
- On your device · nothing is uploaded
- No account, no email
- Batch and ZIP download
- Free
- AAC: sound only
How to convert FLV to AAC
Add your FLV videos
Drop FLV files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
AAC is already chosen
Press Convert. Open Options first if you want to change the defaults. The work happens in this tab and can take a while for large files.
Download
Save the AAC, or download everything as one ZIP if you converted several files.
Why ToAny
Private by construction
The FLV to AAC converter is part of this page and runs inside your browser. Your videos are never sent to ToAny or to anyone else.
No upload, no queue
Nothing has to travel to a server and back, so work starts the moment you press Convert. How long it takes depends on your device and the size of the file.
Free, without an account
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
FLV to AAC: what to expect
FLV no longer plays in any browser now that Flash is gone. AAC is more efficient than MP3 at the same bitrate. FLV is at home in nothing new; it survives in old downloads and stream recordings; AAC is the usual choice for efficient audio for streaming and video soundtracks. The AAC contains the soundtrack only; the picture is dropped.
The defaults suit most files. Under Options you can choose the bitrate and trim the start and end. This is demanding work for a browser: a long or high-resolution file can take several minutes, and your device does all of it, so keep the tab open.
This pair uses the compatibility engine, ffmpeg built for the browser, because FLV is not handled by the browser's built-in codecs. It is a one-off download of about 10 MB that the browser keeps, it is slower than the built-in codecs, and it takes files up to 1 GB. AAC is written at 192 kbps unless you choose another bitrate.
FLV vs AAC
AAC
AAC audio
AAC was designed as the successor to MP3 and is the audio codec inside most MP4 videos and streaming services. A bare .aac file is the raw stream without a container, which some players handle poorly.
Opens in Most phones, browsers and media players
AAC converter| FLVFlash video | AACAAC audio | |
|---|---|---|
| Stands for | Flash Video | Advanced Audio Coding |
| Type | Video container | Audio |
| Compression | Lossy | Lossy |
| Introduced | 2002, by Macromedia (later Adobe) | 1997, by the Moving Picture Experts Group |
| Opens in | VLC and little else since Flash Player was retired in 2020 | Most phones, browsers and media players |
| Best for | Nothing new; it survives in old downloads and stream recordings | Efficient audio for streaming and video soundtracks |
| File extension | .flv | .aac, .adts |
Questions
Are my videos uploaded anywhere?
No. The FLV to AAC conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
Does converting FLV to AAC reduce quality?
The soundtrack is re-encoded as AAC. AAC is lossy, but at a normal bitrate the difference is hard to hear. You can choose the bitrate under Options.
Can I convert several FLV files at once?
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
How do I convert FLV to AAC on Windows, Mac, iPhone or Android?
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the FLV file, press Convert and save the AAC. There is nothing to install.
Is there a file size limit?
Yes. FLV to AAC runs on the compatibility engine, which takes files up to 1 GB, and a long clip takes a while because it is slower than the browser's built-in codecs. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.