Convert

Convert FLV to MP4.

Rescue old Flash videos as MP4.

Drop a video here

MP4, MOV, WebM, MKV, AVI, WMV, MPG, FLV and more

Your file stays on this device. Nothing is uploaded.

FLV was the format of Flash video players and early YouTube. Flash is gone, but the files remain in old downloads and stream recordings.

Most later FLVs contain H.264 video and AAC sound. The page uses ffmpeg (about 32 MB, once) to unpack them and then copies the video into MP4 without re-encoding. Older FLVs with Sorenson or VP6 video are re-encoded. The video never leaves your device. It is read and saved by your browser, so there is no upload, no queue and no copy on a server.

How to convert FLV to MP4

  1. Drop your FLV file on the box above.
  2. MP4 is already selected. You can pick another format if you need one.
  3. Press Convert to MP4 and download the new file.

Questions

Will it play now?

Yes. The MP4 uses H.264, which plays everywhere.

Does it work with F4V?

Yes, drop it on the video converter.

Is it slow?

H.264 FLVs take seconds. Old VP6 or Sorenson FLVs take longer.