MP4 to FLV
Convert MP4 files to FLV in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert MP4 to FLV?
- FLV is still accepted by some streaming tools, older websites and players.
- Convert in a few seconds right in your browser, without installing software.
You don't need to install any software to convert MP4 to FLV. Upload your file, choose FLV and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
MP4 vs FLV: comparison
| Feature | MP4MPEG-4 Video | FLVFlash Video |
|---|---|---|
| Developer | MPEG (ISO) | Macromedia / Adobe |
| Released | 2001 | 2002 |
| Type | video | video |
| Compression | lossy | lossy |
| Opens with | VLC, Windows Media Player, QuickTime | VLC, MPV |
Tip: converting to 720p or 480p makes the file much smaller.
How it works
- Choose or drop your MP4 file.
- Pick FLV as the output format.
- Click “Convert” and download your file.
MP4 to FLV: questions and answers
Will quality be lost when converting MP4 to FLV?
FLV uses compression, but at the default settings the difference is hard to hear or see. You can choose a higher bitrate in Options.
How long does MP4 to FLV conversion take?
It depends on the length: a short file takes a few seconds, a long video can take a few minutes. Progress is shown as a percentage.
What is the maximum MP4 file size?
Up to 500 MB per file and up to 20 files at once — for free.
Can I convert MP4 to FLV on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a FLV file?
FLV files open in: VLC, MPV.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.
⇄ Need the opposite? Convert FLV to MP4 →