An FLV file is a flash-compatible video file exported by the Flash Video Exporter plug-in (included with Adobe Animate) or other program with FLV file support.
How to Open, Edit, & Convert FLV Files. Standing for Flash Video, a file with the FLV file extension is a file that uses Adobe Flash Player or Adobe Air to transmit video/audio over the internet. The F4V file format is a Flash Video file that's similar to FLV.
How do I play FLV files? Play FLV files with Final Media Player! Opens files with file extension FLV.