MPEG Streamclip is an easy to use, powerful, free software video conversion, player, and editor for both Mac and Windows. It is able to play most movie formats, not just MPEGs; additionally, it is able to simultaneously convert MPEGs between muxed/Demuxed formats for easy authoring; it is able to encode videos to many different formats, such as iPod; and it is able to cut, trim, and join videos. It also comes with a video recorder feature which allows you to record your desktop screen live as you convert and encode. There are many other features, as well. If you are interested in converting your video into an Apple IOS device, you will be happy to know that the player also supports iTunes and enables you to sync your converted files across all of your devices.
As with any free video player or software, there are a few caveats that make MPEG Streamclip a little less than perfect. First of all, it only supports Windows and has an incredibly slow startup time. Another problem is that it does not support audio while it converts, and it does not allow you to re-size the preview window. However, if you need audio then it does have an option to add it. Overall, however, this is a great free tool to convert your videos to the square 5 mpeg streamclip format.
If you need to convert video files to the common, acceptable, and easy to recognize square, or square 5 mpeg file formats for whatever reason, this is definitely the tool for you. It is extremely simple to use, extremely quick, and offers all of the features you would expect out of a video conversion utility. While it does not offer everything that some other software packages do, like the ability to edit or manage your movie files after conversion, it is still one of the better free tools available. Try to get a version of Windows that has this program installed, as this is the most commonly used platform for computers. This will save you a ton of time, and the compatibility should last for years.