FLV to MP4
Convert old Flash FLV videos to MP4.
Your files are processed locally in your browser and never uploaded.
How it works
- 1Choose a file or drop it onto the box.
- 2Set the options you want.
- 3Click the button — the result downloads automatically.
About this tool
FLV to MP4: Convert old Flash FLV videos to MP4. Choose a file, adjust the options and download the result — the processing runs entirely in your browser, so your file is never uploaded to a server. No sign-up, no watermark.
How do I use the FLV to MP4?
Choose a file or drop it onto the box. Set the options you want. Click the button — the result downloads automatically.
Is the FLV to MP4 free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Are my files uploaded?
No. The file is processed entirely in your browser using WebAssembly and web APIs — it never leaves your device, which also makes it work offline once the page is loaded.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.