frogConvert

FLV files

Flash Video, the format that carried web video until Flash was retired in 2020. Effectively legacy, and converting out of it is the normal reason to encounter one.

Extension
.flv
MIME type
video/x-flv
Category
video
Can convert from
Yes, via FFmpeg, 7-Zip
Can convert to
Yes, via FFmpeg

Convert FLV to another format

Converting FLV files privately

frogConvert runs the conversion engines in your browser as WebAssembly, so a FLV file is read, converted and saved without ever being sent anywhere. That matters most for the files people are least willing to upload: contracts, medical records, unreleased work, anything under an NDA.

It also means the converter works offline. Once the page has loaded, you can turn off the network and keep converting.

Common questions

Can I open a FLV file without installing anything?
Yes. frogConvert reads FLV files directly in the browser and converts them to a format you already have software for. Nothing is installed and nothing is uploaded.
Are my FLV files uploaded to a server?
No. Every conversion runs locally in your browser through WebAssembly. There is no server to send files to, and the app keeps working with the network disconnected.