The best programs to create, edit and convert MP4 videos.
Avidemux It is one of best free video editing programs through which you can edit all major video file formats, including MP4. Using it you can cut, join and edit videos in a very simple way, apply special filters, resize and edit the audio tracks of the videos. The program works in both direct streaming and full processing mode, this means that it can save edited videos without re-encoding them. It is available for all major operating systems: Windows, Mac OS X and Linux and is also translated into Italian. Download from here.
HandBrake is an excellent free and open source program that allows you to convert DVD and video files to MP4 files and MKV. It includes many predefined profiles through which it is possible to create optimized videos for iPhone, iPad, iPod Touch and other portable devices starting from any video file format or DVD. It's super easy to use for beginners but offers many flexible output settings for more experienced users. It is available for all major operating systems: Windows, Mac OS X and Linux and is also translated into Italian. Download from here.
YAMB is a free MP4Box based application that allows you to create, split and muxar files in MP4 format with various audio tracks and subtitles. Among the functions of the program there are also the possibility of demuxing MP4 files, that is, to extrapolate audio streams, video streams and subtitles from them and to perform some basic editing functions on movies. It also allows you to create and edit 3GP format files for mobile phones. Available for Windows only (all versions). Download from here.
VLC according to many the best media player currently in circulation. It is free, open source and multi-platform, this means that regardless of the computer and operating system used, it can be downloaded and installed to enjoy the same multimedia experience. It supports all major audio and video file formats (including mp4), DVD video, movies with multiple audio tracks and subtitles and includes many advanced features. For example, it allows you to view YouTube videos and stream video / audio from any source, without forgetting the ability to record in real time what is played on your PC. It is completely in Italian. Download from here.
Free Video Dub
Free Video Dub is a free program for Windows that, as the name suggests, allows you to perform small video editing operations, first of all the elimination of advertising and unnecessary scenes from the videos. It supports all major video file formats (* .avi, * .mpg, * .mp4, * .mkv, * .flv, * .3gp, * .webm, * .wmv) and is extremely easy to use even for less experienced users. It is only available for Windows (all versions). Download from here.
Miro Video Converter
Miro Video Converter it's a universal video converter compatible with Windows and Mac OS x which allows you to obtain videos in MP4 format from all major types of video files. It includes a very varied set of presets that allow you to get videos optimized for playback on iPhone, iPad, iPod Touch, Android smartphones and other mobile devices in an incredibly easy and fast way. Just drag the original video into the program window, select the target format, and that's it. Download from here.