Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .mp4

1 extension(s) and 1 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .mp4 file?
  • Which program can create the .mp4 file?
  • Where can you find a description of the .mp4 format?
  • What can convert .mp4 files to a different format?
  • Which MIME-type is associated with the .mp4 extension?
Mpeg-4 Video Container .mp4 file icon

Mpeg-4 Video Container

The MP4 file is an Mpeg-4 Video Container. It is the global file extension for the official container format defined in the MPEG-4 standard. This format allows you to combine different multimedia streams (most of the time audio and video) into one single file.
Category: Video files
Application: Windows Media Player
Program name: mplayer.exe
Mime-type: video/mp4
Magic bytes (HEX): -
Magic string (ASCII): -
mp4s, mp4v, mpeg-4, mpeg4, mpg4, mpv4, mv4
Related extensions:
Microsoft Video for Windows Movie
QuickTime Movie
Mpeg Video
Multimedia Viewer Book
RealMedia File
3GP Video File
Advanced Systems Format Media
Digital Video
Adobe Flash Video File
Mpeg-4 Audio .m4a file icon

Mpeg-4 Audio

The M4A file is a MPEG-4 audio stream (MP4). MP4 is a better audio compression technology than old MP3.
Category: Audio files
Application: Windows Media Player
Program name: mplayer.exe
Mime-type: audio/x-m4a
Magic bytes (HEX): -
Magic string (ASCII): -
mp4, mp4a
Related extensions:
Audio Interchange File
CD Audio Track
MIDI Music
Real Audio Sound
Macintosh Sound Resource
Amiga 8SVX Sound
Creative Labs Sound Blaster Sound
Windows Waveform Sound
AC-3 Compressed Audio

Other types of files may also use the .mp4 file extension. If you have helpful information about .mp4 extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Harpoon Classic Game Data
Elphel Project JP4 File
36-Image Converter Language Data
M4 Macro File
Sage MAS 90 Program File
Milestones v4 Project
MetaPost Source Code
Mpeg Video
Visual FoxPro Menu Program

The .mp4 filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

pm4 (1), np4 (1), mpr (1), ml4 (1), m4 (1), jp4 (1), p4 (1), mpt (1), mp (1), m4p (1), lp4 (1)

Can't open a .mp4 file?

If you want to open a .mp4 file on your computer, you just need to have the appropriate program installed. If the .mp4 association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.mp4

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android