MP4 files are generally classified as video files, and these contain digital video content that has been implemented with MPEG-4 data encoding specifications and video compression standards. In an MP4 file, the audio and video segments of the file are separately compressed. Its audio data is integrated with AAC audio compression, while its video content is implemented with MPEG-4 video encoding specifications. This results to high quality videos with optimal portability, in terms of storing these MP4 files in external data storage devices and optical media and for sharing these MP4 files on the Internet. There are many applications for Microsoft Windows that can be used to open, create and edit these MP4 files, and there are also a lot of programs for Linux and Mac platforms that can allow users to create and view the content of these MP4 video files.