This article explains what FLV files are, how to play them on any platform, and how to convert them to another video format so they can play properly on your device.
How do I play an FLV file on Windows?
FLV stands for Flash Video. A file with the file extension .FLV is a file that uses Adobe Flash Player or Adobe Air to send video or audio over the Internet.
Flash Video has long been the standard video format used by nearly all embedded video on the Internet, including videos found on YouTube, Hulu, and many other sites. However, since Adobe officially retired Flash, streaming services and software developers have been dropping Flash in favor of HTML5 and other formats.
The F4V file format is a Flash video file similar to FLV. Some FLV files are embedded in SWF files.