.MP4 File Extension

Moving Picture Experts Group
File Type:
MPEG-4 Video File

Having trouble opening .mp4 extension? Don't panic! This page explains what mp4 files are as well as suggests programs you may use to open mp4 files. You can download these programs through this page.

What is a MP4 file?

Mp4 file extension has MPEG-4 Video file type, developed by Moving Picture Experts Group, which is associated with the "video files" category.

Multimedia file is typically used for saving a video or a movie. It can also contain images and subtitles. MP4 files are based on the QuickTime File Format (QTFF). The latter is also used by both .QT and .MOV files.

MP4 files involve compression. Video is usually compressed, using MPEG-4 video encoding, while audio is compressed with the help of AAC compression that is applied in .AAC files as well.

To learn how you can open the given file, read the information below.

mp4 file icon
Moving Picture Experts Group
File Type:
MPEG-4 Video File
Video Files

How to open MP4 file?

Double click the mp4 file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .mp4 extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the mp4 extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the mp4 file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open MP4 files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the mp4 file as well. Download Universal File Viewer for your OS.

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