F4F is a partial FLV file, or a fragment of Flash MP4 video , generated and used by Adobe Media Server, a multimedia streaming software. F4F file stores a part of Flash movie.
Files with the .MP4 extension contain audio and video streams encoded usually in the MPEG-4 format, but they are supported also by many other formats. It is a container – file, and it may also include metadata, subtitles or images, although it is rarely used for this purpose.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the F4F file after converting to MP4 may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from F4F to MP4 to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting F4F to MP4 does not meet your expectations, you can simply try to find on the Internet a different version of your file in F4F format, properly converted to a MP4 file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your F4F file converted by someone else, and the attempt to convert it to MP4 on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the F4F file in its original format (without conversion to MP4 file). Such a solution will be difficult to implement, but it certainly will give the best result.