Filixir
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Open .flv and .f4v files on Windows 10 and 11

Flash video files come from Adobe Flash (2003 to 2020). Filixir opens them without the original program. Old web and camera videos: play them and save them as MP4.

How to open one

  1. Download Filixir. It's free for Windows 10 and 11 and installs without an administrator password.
  2. Double-click your .flv file, or right-click it and choose Open with › Filixir. You can also drag it onto Filixir.
  3. The first time, Filixir offers to download its free media add-on (the VLC engine) from its makers. It takes a minute and only happens once.
  4. Look through it in Filixir, then save it in the format you want. Your original file is never changed.
Download Filixir for Windows

Also in old video and audio (media add-on)

RealMedia .rmDVD and MPEG video .vobOlder AVI video .aviOgg and other open formats .ogv