On the other hand, for a great free online F4V to MP4 converter here are the two methods that you can utilize. The problem is that most of them are not for free and do not work as they supposed to be, leaving you hanging with the same F4V video that you have. There can be various ways on the web that provide conversion of F4V to a certain format that you desire. Top of the online methods to free convert F4V to MP4 Moreover, because of the limitation of the F4V format, many users are looking for the best way to convert F4V to MP4 which is a more manageable file type since it can be played on most video players and even some high-tech smart phones and portable devices. This is a great format to use if you are going to stream videos online, however, not all video players support it due to the fact that it can only be streamed with a Flash Player only. It is similar to FLV in some ways but F4V file extension supports H.264 video and AAC audio content. There are various video files available nowadays, but have you encountered F4V file? Do you know what it is? The F4V is actually a file format container that is utilized to deliver video across the World Wide Web via Adobe Flash Player.