File Extension MP4

.MP4 File

File extension: MP4
File type: Video File
Do you have MP4 - related issues?
First check your registry for hidden errors.


Notes about the MP4 file extension:


Errors in your registry are one of the common causes for incorrect file associations on your windows system. It is highly recommended that you check your registry for file association errors (will also check for any other registry errors).

The MP4 file type is primarily associated with 'MPEG-4'. You often see BIFS associated with MPEG-4. BIFS stands for "Binary Format for Scenes". BIFS provides a complete framework for the presentation engine of MPEG-4 terminals. Play MP4 files with various players; just download the correct CODEC from the player's Website. For a summary of how to view an MPEG-4 movie on a Sony PSP, see the FAQ.

Detailed information for file extension MP4:

Primary association: MPEG-4
Mime type: video/mp4v-es, audio/mp4
Identifying characters Hex: 00 00 00 , ASCII:
Program ID: NeroMIX.File , NeroShowTime.Files , QuickTime.mp4 , RealPlayer.MP4.6
Related links: MPEG-4 Industry Forum, FILExt Video FAQ

Other applications associated with file type MP4:

  • MP4The video MIME type for MP4 is  video/mp4  according to RFC4337. The MIME type  video/mp4v-es  is only used for MP4 in a RTP stream, not for a file (see RFC 3016).
    Please correct the file info for .mp4 files. This association is classified as Video. The Mime types used with this association are: video/mp4. Related links: RFC 4337, RFC 3016
File Identifier - TrID
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database



Important: When encountering any file extension issues it is always recommended that you run a free scan for Windows registry errors.

Technical data

To view technical data on file-extension MP4 click this link to expand/hide the additional area.

System Info for File Extension .MP4

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.
ProgramID: Winamp.File
EXEFile: %ProgramFiles%\Winamp5\Winamp.exe %1
ProgramID: ACEMegaCoDecSPack.MPEG4VideoFileS
EXEFile: %ProgramFiles%\ACE Mega CoDecS Pack\Media Player Classic\mplayerc.exe %1 /open
ProgramID: Rhapsody.Document
EXEFile: %ProgramFiles%\Rhapsody\Rhapsody.exe %1
ProgramID: Winamp.File
EXEFile: %ProgramFiles%\Winamp5.08\Winamp.exe %1
ProgramID: Rhapsody.Document
EXEFile: %ProgramFiles%\Comcast Rhapsody\rhapsody.exe %1
ProgramID: 3ivx.mp4
EXEFile: %ProgramFiles%\Windows Media Player\mplayer2.exe %L
ProgramID: NeroShowTime.Files
EXEFile: %ProgramFiles%\Ahead\Nero ShowTime\ShowTime.exe %1
ProgramID: ZPMP4File
EXEFile: C:\Documents and Settings\Kimbali Bays\Desktop\XP CD Creator update\microsoft\zoomplayer403std\zplayer.exe %L
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\QUICKT~1\MoviePlayer.exe %1
ProgramID: mplayerc.mp4
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe
ProgramID: StudioII.Player
EXEFile: %ProgramFiles%\Samsung\EASYST~1\FILEMA~1\EASYST~1.EXE
ProgramID: Microsoft.Zune.1.MP4
EXEFile: %ProgramFiles%\Zune\Zune.exe /Open
ProgramID: Winamp.File
EXEFile: %ProgramFiles%\Winamp\Winamp.exe %1
ProgramID: RealPlayer.MP4.6
EXEFile: %ProgramFiles%\RealOne Player\RealPlay.exe %1
ProgramID: RealPlayer.MP4.6
EXEFile: %ProgramFiles%\Real\RealPlayer\RealPlay.exe %1
ProgramID: RealPlayer.MP4.6
EXEFile: %ProgramFiles%\Real\RealOne Player\RealPlay.exe %1
ProgramID: QuickTime.mp4
EXEFile: C:\QUICKT~1\QuickTimePlayer.exe %1
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\QUICKT~2\QuickTimePlayer.exe %1
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\QUICKT~1\QuickTimePlayer.exe %1
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\Free\QUICKT~1\QuickTimePlayer.exe %1
ProgramID: mpegfile
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe /prefetch:9 /Open %L
ProgramID: MPEG-4 File
EXEFile: %ProgramFiles%\Kazaa 2.4\K-Lite Codec Pack\media player classic\mplayerc.exe %L
ProgramID: MPEG-4 File
EXEFile: %ProgramFiles%\K-Lite Codec Pack\media player classic\mplayerc.exe %L
ProgramID: MPEG-4 File
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe %1
ProgramID: mp4file
EXEFile: %ProgramFiles%\mpegable\Player\mpegablePlayer.exe %1
ProgramID: foobar2000.mp4
EXEFile: %ProgramFiles%\foobar2000\foobar2000.exe %1
ProgramID: foobar2000.mp4
EXEFile: %ProgramFiles%\Audio\foobar2000\foobar2000.exe %1
ProgramID: ACDSee 7.0.mp4
EXEFile: %ProgramFiles%\ACD Systems\ACDSee\7.0\ACDSee7.exe %1
ProgramID: totalplayer.file
EXEFile: %ProgramFiles%\Total Video Player\tvp.exe
ProgramID: 3ivx.mp4
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe %L
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\QuickTime\QuickTimePlayer.exe %1
ProgramID: YMP.Media
EXEFile: %ProgramFiles%\Yahoo!\Yahoo! Music Engine\YahooMusicEngine.exe -play %1
ProgramID: ZPMP4File
EXEFile: %ProgramFiles%\Combined Community Codec Pack\MPC\mplayerc.exe
ProgramID: AudioManager.File
EXEFile: %ProgramFiles%\Nokia\Nokia PC Suite 6\AudioManager.exe
ProgramID: Rhapsody.Document
EXEFile: %ProgramFiles%\COMCAS~1\rhapsody.exe %1
ProgramID: mplayerc.mp4
EXEFile: %ProgramFiles%\Ringz Studio\Storm Codec\mplayerc.exe
ProgramID: MP4File
EXEFile: %ProgramFiles%\JetAudio\JetAudio.exe %1
ProgramID: SonyMP4
EXEFile: %ProgramFiles%\WINDOW~2\wmplayer.exe %1
ProgramID: Winamp.File
EXEFile: %ProgramFiles%\JetAudio\JetAudio.exe %1
ProgramID: NeroShowTime.Files.mp4
EXEFile: %ProgramFiles%\Ahead\Nero ShowTime\ShowTime.exe
ProgramID: NeroShowTime.Files.mp4
EXEFile: %ProgramFiles%\Ahead3\Nero ShowTime\ShowTime.exe
ProgramID: 3ivx.mp4
EXEFile: %ProgramFiles%\Windows Media Player\mplayer2.exe /play
ProgramID: mp4File
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe /prefetch:6 /Open
ProgramID: GomPlayer.mp4
EXEFile: %ProgramFiles%\GRETECH\GomPlayer\GOM.exe /open
ProgramID: mplayerc.mp4
EXEFile: %ProgramFiles%\StormPlayer\mplayerc.exe
ProgramID: StudioII.Player
EXEFile: %ProgramFiles%\Samsung\SAMSUN~1.0\PIMS
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\QuickTime Alternative\QuickTimePlayer.exe
ProgramID: KLCP MP4 File
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe
ProgramID: ACDSee 8.0.mp4
EXEFile: %ProgramFiles%\ACD Systems\ACDSee\8.0\ACDSee8.exe
ProgramID: Winamp.File
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\ACE Mega CoDecS Pack\Media Player Classic\mplayerc.exe
ProgramID: ALShow.MP4
EXEFile: %ProgramFiles%\ESTsoft\ALShow\ALShow.exe
ProgramID: OpenMG_Mp4
EXEFile: %ProgramFiles%\Sony\SonicStage\Omgjbox.exe
ProgramID: Democracy.Player.1
EXEFile: %ProgramFiles%\Participatory Culture Foundation\Democracy Player\Democracy.exe
ProgramID: totalplayer.file
EXEFile: %ProgramFiles%\Total Video Converter\tvp.exe
ProgramID: KLCP MP4 File
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe
ProgramID: KMPlayer.mp4
EXEFile: %ProgramFiles%\The KMPlayer\KMPlayer.exe
ProgramID: Nokia.Multimedia
EXEFile: %ProgramFiles%\Nokia\Nokia PC Suite 6\MultimediaPlayer.exe
ProgramID: StudioII.Player
EXEFile: %SystemRoot%\PLAY32.EXE
ProgramID: QuickTime.mp4
EXEFile: %ProgramFiles%\QUICKT~1\QUICKT~1.EXE
ProgramID: GomPlayer.mp4
EXEFile: %ProgramFiles%\_Media\Players\GomPlayer\GOM.exe /open
ProgramID: KLCP.MP4
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe
ProgramID: Miro.1
EXEFile: %ProgramFiles%\Participatory Culture Foundation\Miro\Miro.exe
ProgramID: MP4
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe
ProgramID: PDVDfile
EXEFile: %ProgramFiles%\CyberLink\PowerDVD\PowerDVD.exe
ProgramID: qvodplayer.mp4
EXEFile: %ProgramFiles%\QvodPlayer\QvodPlayer.exe -localfile
ProgramID: AVSVIDEO
EXEFile: %ProgramFiles%\AVSMedia\DVDPlayer\AVSDVDPlayer.exe
ProgramID: ACDSee 9.0.mp4
EXEFile: %ProgramFiles%\ACD Systems\ACDSee\9.0\ACDSeeQV.exe
ProgramID: ACDSee.mp4
EXEFile: %ProgramFiles%\ACD Systems\ACDSee\5.0\ACDSee5.exe
ProgramID: MediaMonkey.MP4File
EXEFile: %ProgramFiles%\MediaMonkey\MediaMonkey.exe
ProgramID: tigerplayer.mp4
EXEFile: %ProgramFiles%\MpcStar\mpcstar.exe
ProgramID: VLC.mp4
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe
ProgramID: Nokia.VideoManagermp4
EXEFile: %ProgramFiles%\Nokia\Nokia PC Suite 7\Nokia Video Manager\VideoManager.exe
ProgramID: mp4file
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe /Open
ProgramID: MediaMonkey.MP4File
EXEFile: %ProgramFiles%\MEDIAM~1\MEDIAM~2.EXE
ProgramID: KLCP.WMP.mp4
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe
ProgramID: MPlayerFileVideo
EXEFile: %ProgramFiles%\MPlayer\mplayer\smplayer_portable.exe
ProgramID: RealPlayer.MP4.6
EXEFile: %ProgramFiles%\Dhamu\Download\RealPlay.exe
ProgramID: WMP11.AssocFile.MP4
EXEFile: %ProgramFiles%\Windows Media Player\wmplayer.exe /prefetch:6 /Open
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Everytime you install & uninstall software and modify system components your Windows registry is left fragmented with obsolete, corrupted and harmful files.

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