File Extension MP4

  • Full name
    MPEG-4 Video File Format
  • Developer
    Moving Picture Experts Group
  • Popularity
Have you encountered a problem with a MP4 file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a MP4 file here. In the further part of this page we have added a list of programs that should open your MP4 file. It is enough you choose a proper application for your operating system, download and install it.


The MPEG-4 Part 14 or MP4 format, which is marked by the extension MP4 as avi and mov a container format. It is based on Apple Quicktime.

These files can contain video and / or multiple audio streams as well as subtitle text and images. It also supports multimedia content such as 2D and 3D data, menus or interactive content. Theoretically, almost any type of data can be included in an mp4, but this is not widely supported.

The video and data streams can be coded in different compression methods.

Supported MPEG 1, 2 and 4. MPEG 4 contains such codecs as Xvid, Divx and H264 and is mostly used. Audio can be in AAC, MP3, MP2 or AC3. There are other special codecs supported. Most commonly AAC is used.

MP4 files can also contain additional metadata.

The contents of the file may also be protected by DRM (Digital Rights Management). Then you need a corresponding, possibly paid license to view the content.

For MP4 files, which contain only one type of data, other endings come into use. m4v for video, m4a for audio, m4b for audiobooks.

Often, portable hardware players are referred to as MP4 players if they can play videos in addition to audio files. However, this does not mean that they can handle MP4 files.

Most players can handle MP4 files as long as they can decode the data they contain. That's the case with most videos.

Programs which can open a MP4 file

How to open a MP4 file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the MP4 file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a MP4 file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support MP4 files. At this point we are looking for disk space where the application was installed in and we can link it with a MP4 file. Since then, our operating system will use the selected program to support all MP4 files.

Other issues

Despite the described problem with MP4 there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the MP4 file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the MP4 file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

Similar extensions