FLV to MP4 Converter

About this converter

FLV (Flash Video) was the format of the Flash web era. Now that Flash is dead and unsupported in every modern browser, FLV files are stranded - hard to play and harder to share.

Converting FLV to MP4 moves your video into a format that today's browsers, phones, and editors all understand. If the FLV's internal video is already H.264 with AAC audio (common in later Flash video), EasyConvert can repackage it quickly; older FLVs using Sorenson or VP6 are re-encoded to H.264.

FLV to MP4: good to know

• Newer FLVs (H.264/AAC inside) can be remuxed fast and lossless; older Sorenson/VP6 clips are re-encoded.
• MP4 is the modern replacement for everything Flash video used to do online.
• Batch-drop several old FLV files at once and download them together as a ZIP.

How it works

1. Drop your file(s) in the box above (or click to browse).
2. Make sure MP4 is selected as the output.
3. Click Convert, then Download your file.

Frequently asked questions

How do I convert FLV to MP4?

Drop your FLV file above, make sure MP4 is selected, and click Convert, then Download. Nothing is uploaded and nothing is installed.

Why can't I play FLV files anymore?

FLV was designed for Adobe Flash, which has been discontinued and removed from all major browsers. Converting to MP4 gives you a file that plays on current devices and software.

Will FLV to MP4 be lossless?

If the FLV already contains H.264 video and AAC audio, it can be repackaged without quality loss. Older FLVs using Sorenson Spark or VP6 must be re-encoded, which involves some loss.

Can I convert old FLV recordings in bulk?

Yes. Drop multiple FLV files into the box at once and EasyConvert converts them as a batch, ready to download as a ZIP.

Is it private?

Completely. Conversion happens in your browser via WebAssembly, so your files never travel over the internet.

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MKV to MP4MOV to MP4AVI to MP4WebM to MP4