F4V and FLV are more or less the same file format. You can simply rename F4V to FLV as most programs that support FLV will also support F4V albeit not have it associated by default.
Convert Adobe Flash mp4 file to Flash video file.
We found 7 software records in the database related to .f4v to .flv file format conversion.
Microsoft Windows software - convert f4v to flv on Windows
Multimedia platform used to add animation, video, and interactivity to web pages
Convert from f4v file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned f4v to flv. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
One of the most popular and succesfful free video conversion sofrware
All-in-one package of DVDVideoSoft utilities and converters
Universal All Purpose Free Media, Audio & Video Converter Player Recorder
A multimedia converting tool for Windows
Apple macOS / Mac OS X software - convert f4v to flv on OS X
Mac version of Flash development platform from Adobe
Universal video converting software for Mac