When you are creating a video on your camera, or even using certain programs on your computer, a popular format that many people prefer is FLV because of the file size being so small. However, if you want to upload this to a file sharing site, most of them prefer MP4. In order to fix this problem, you need to get software that will allow you to convert FLV to MP4. This is very easy to do. Once you find the software, purchase it, download it, and convert all of your files to MP4. This will make it very easy for you to share all of your videos across the web in the most preferred format of all.