.MP4 file extension
To open .MP4 files on Windows, use Windows Media Player or Movies & TV app.
.mp4 files are versatile video files that can be opened with various media players like VLC or QuickTime on different platforms.
Last updated: March 19, 2026 · Reviewed by Julian Stricker
Open on your device
Choose your operating system for a dedicated step-by-step opening guide.
How to open .MP4 files
Use these platform-specific instructions to open .MP4 files safely.
Windows
- Use Windows Media Player or Movies & TV app.
- Install VLC media player for broader codec support.
Mac
- Open with QuickTime Player.
- Use VLC for additional codec support.
Linux
- Play with VLC or mpv media player.
- Ensure necessary codecs are installed via package manager.
iOS
- Open with the native Photos app or VLC for iOS.
Android
- Use the default video player or VLC for Android.
Security notes
- Always update media players to protect against vulnerabilities.
- Be cautious when opening MP4 files from untrusted sources.
- Ensure your antivirus software is up to date to scan for malicious files.
- Avoid downloading MP4 files from suspicious websites to prevent malware infections.
Recommended antivirus software
Scan files before opening them. These antivirus tools help protect against malware and viruses.
Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.
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Can't open this file?
These are the most common causes and fixes when .MP4 files fail to open.
Common reasons
- Black screen with audio
- No sound during playback
- File won't open
- Video plays choppy
Fix steps
- Try using VLC or another media player with extensive codec support.
- Convert the file to a more compatible format using ffmpeg.
OS-specific troubleshooting
Convert .MP4 to other formats
Use conversion tools to change .MP4 files into formats your software supports.
- .MP4 → .3G2
- .MP4 → .3G2
- .MP4 → .3GP
- .MP4 → .3GP
- .MP4 → .AAC
- .MP4 → .ASF
- .MP4 → .ASF
- .MP4 → .AVI
- .MP4 → .AVI
- .MP4 → .AVI
- .MP4 → .DAT
- .MP4 → .DAV
- .MP4 → .DIVX
- .MP4 → .DV
- .MP4 → .DVRMS
- .MP4 → .F4V
- .MP4 → .FLAC
- .MP4 → .FLV
- .MP4 → .FLV
- .MP4 → .M2T
- .MP4 → .M2TS
- .MP4 → .M2TS
- .MP4 → .M4A
- .MP4 → .M4V
- .MP4 → .M4V
- .MP4 → .M4V
- .MP4 → .MKV
- .MP4 → .MKV
- .MP4 → .MKV
- .MP4 → .MOD
- .MP4 → .MOV
- .MP4 → .MOV
- .MP4 → .MOV
- .MP4 → .MP3
- .MP4 → .MPEG
- .MP4 → .MPEG
- .MP4 → .MPG
- .MP4 → .MPG
- .MP4 → .MTS
- .MP4 → .MXF
- .MP4 → .MXF
- .MP4 → .OGG
- .MP4 → .OGV
- .MP4 → .OGV
- .MP4 → .RM
- .MP4 → .RMVB
- .MP4 → .SWF
- .MP4 → .SWF
- .MP4 → .TOD
- .MP4 → .TP
- .MP4 → .TRP
- .MP4 → .TS
- .MP4 → .VOB
- .MP4 → .VOB
- .MP4 → .VRO
- .MP4 → .WAV
- .MP4 → .WEBM
- .MP4 → .WEBM
- .MP4 → .WEBM
- .MP4 → .WMA
- .MP4 → .WMV
- .MP4 → .WMV
- .MP4 → .WMV
- .MP4 → .WTV
- .MP4 → .XVID
What is a .MP4 file?
MP4, or MPEG-4 Part 14, is a digital multimedia container format that supports multiple data types such as video, audio, and subtitles. It is widely compatible with various devices and platforms, though playback depends on the codecs used within the file.
Background
The MP4 format was developed as part of the MPEG-4 standard by the Moving Picture Experts Group (MPEG) in 1998. It has become one of the most popular video formats due to its efficient compression and ability to maintain high quality, making it ideal for online streaming and mobile playback. MP4 files can contain a variety of data streams, including video, audio, subtitles, and still images, making them versatile for different media applications. This format is widely supported across various platforms and devices, including computers, smartphones, and tablets, which contributes to its popularity. MP4 files are often used for sharing videos on the internet, streaming services, and storing personal video collections.
Common MIME types: video/mp4
Known aliases: .m4v
Further reading
Authoritative resources for more details on the .MP4 format.
Common .MP4 issues
Black screen with audio
This occurs when the video codec is unsupported by the player.
- Try using VLC or another media player with extensive codec support.
- Convert the file to a more compatible format using ffmpeg.
No sound during playback
The audio codec may not be supported by the media player.
- Check the volume settings and ensure they are not muted.
- Use VLC or update the media player to the latest version.
File won't open
The file might be corrupted or improperly downloaded.
- Attempt to re-download the file.
- Try opening the file with a different media player.
Video plays choppy
This can happen due to high resolution or insufficient system resources.
- Close other applications to free up system resources.
- Try lowering the video resolution or using a more efficient player like VLC.
FAQ
Can MP4 files contain multiple audio tracks?
Yes, MP4 files can include multiple audio tracks, allowing for different languages or commentary.
Is MP4 the same as M4V?
M4V is a file extension similar to MP4, often used by Apple, but may include DRM protection.
Why is MP4 so popular?
MP4 is popular due to its efficient compression, high quality, and wide compatibility with devices and platforms.
Can MP4 files be edited?
Yes, MP4 files can be edited using video editing software like Adobe Premiere Pro or iMovie.
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