Convert FLV to MP4
Give Flash-era FLV files a new life by converting them to modern MP4 — nothing to install.
Your files never leave your device
How to convert FLV to MP4
- 1
Upload the FLV
Videos saved in the Flash era.
- 2
Convert
Re-encoded to H.264 + AAC.
- 3
Download the MP4
Playable without Flash Player.
Why use this tool
Flash died, your videos didn't
Recover FLVs almost nothing opens anymore.
Total compatibility
The resulting MP4 works on any device.
No sketchy software
No abandoned players to install.
Private
The video never leaves your device: ffmpeg runs in your browser.
Frequently asked questions
Which FLV codecs are supported?
The typical ones: Sorenson H.263, VP6 and H.264-in-FLV, with MP3 or AAC audio.
Will I lose quality?
FLVs are usually low-resolution; the conversion preserves what's there without inventing detail.
Why did FLV disappear?
Flash Player retired in 2020 and the format was orphaned. MP4/H.264 replaced it everywhere.
Is there a size limit?
250 MB per file, processed in your browser's memory.