.MP4

.MP4 file extension

This is the basic program to work with .MP4 extension

QuickTime

QuickTimeMPEG-4 Movie

QuickTime is a media player that supports most common audio and video formats. It also comes with a basic image viewer that supports most popular image formats. It offers a simple GUI with basic buttons to play, seek, and adjust volume. It is a bit slow to open, but other than that it performs well during audio and video playback. It works great with HD and Full-HD videos... (more)

The program works with the following extensions: mp4, jpg, swf, png, mkv, avi, psd, bmp, mp3, gif, jpeg, mov, dv, au, qt, cel, mpe, jpe, smf, dif, rgb, smi, sgi, mpg, mpm, sml, aif, flc, rmi, mpv, pct, swa, fli, m2a, snd, mqv, pic, ulw, gsm, mmv, pls, vfw, kar, pnt, wav, qcp, m15, qti, 3g2, qht, tif, m4e, m1v, m1a, 3gp, tga, m2v, m1s, m3u, qtl, amc, mps, mid, m4a, qup, aac, rts, amr, xpl, m4b, qif, ac3, bwf, mac, mp2, m4p, sd2, caf, jp2, m4v, dib, sdp, mpa, m75, sdv, qtif, mpeg, smil, mpg4, aifc, aiff, pict, qhtm, tiff, moov, 3gp2, adts, mpga, 3gpp, midi, rtsp, cdda, pntg, targa, m3url and movie

.MP4 extension is also supported by the following programs:

RealPlayer

RealPlayerMPEG-4 File

RealPlayer is one of the most popular video player.
Windows Media Player

Windows Media PlayerMP4 File

A powerful and convenient media manager from Microsoft.
MediaMonkey

MediaMonkeyMP4 Audio File

MediaMonkey is the movie and music organizer for the serious collector.
MpcStar

MpcStarMP4 video file

MpcStar is a program that can play audio or video files.
VLC media player

VLC media playerVLC media file (.mp4)

The most popular free media player that can play any video format.
AVS DVD Player

AVS DVD PlayerAVS DVD Player Files

AVS DVD Player plays movie DVDs, video and audio files right on your computer.
mpegable Player

mpegable PlayerMPEG-4 File

MPEG-4 player with postprocessing abilities.
Total Video Player by EffectMatrix Inc.

Total Video Player by EffectMatrix Inc.MySQL Tools for

Total Video Player is a media player supporting a vast number of file formats.
AVS Media Player

AVS Media PlayerAVS Media Player Files

Video and audio playback with customisable surround sound system.
Winamp

WinampWinamp media file

Winamp player is designed to cover the large area of media file types.
Haihaisoft Universal Player

Haihaisoft Universal PlayerMySQL Tools for

This program allows you to play your favorite multimedia files.
ALShow

ALShowALShow MP4 File

Codecs included movie player plays videos without searching for codecs.
QvodPlayer

QvodPlayerMySQL Tools for

QVOD player (Nora) is a powerful universal player.
ALLPlayer

ALLPlayerMySQL Tools for

Play and stream audio and video from online sources, computer and torrents.