Play MP4 Files

MP4 (or MPEG-4) is a multimedia container format used for storing digital video and audio streams and to easily share video files over the Internet.

The MP4 multimedia format uses separate compression for its video and audio tracks, so that the video track features MPEG-4 video encoding, while the audio is based on AAC compression.

MP4 video files can be played using both applications and portable devices, such as the Microsoft Zune portable media player.

Users may also be able to use their MP4 players to adjust the bit rate or the aspect ratio for the video source files.