Solved: Why VLC Not Playing MP4?


This article is compiled with various sections that are tailor made to answer why is VLC not playing MP4 and provides you easy methods to fix unplayable MP4 video on VLC media player.
Screenshot of VLC not playing MP4 file

About VLC Media Player

(VideoLAN Client) Media Player is the most widely used media player application all over the world. It is designed in an extensible way that allows you to choose multiple modules to control the video output, regardless of the file format they are saved in.

VLC has a very user-friendly design and interface. Being an open-source platform and consisting of great compatibility, MP4 file format is easily supported by VLC, however there can be times wherein your VLC is not playing MP4.

Why VLC Cannot Play MP4 Videos?

There could various reasons for VLC not playing MP4, the most basic cause might be an outdated version of your VLC Media Player.

  • Improper syncing of audio and video streams in MP4 files which makes it unplayable on VLC.
  • Interrupted downloading of MP4 video files which make the file corrupted.
  • Using untrustworthy third-party apps to modify or edit MP4 videos which cause corruption.
  • When an MP4 file is affected with harmful virus or malware
  • VLC media player doesn’t have appropriate codecs to play the MP4 file
  • MP4 video file header is unreadable or damaged
  • Any sort of interruption while downloading can lead to MP4 file corruption making the MP4 file unplayable in VLC Media Player.

The next thing you need to do is to check where the problem actually lies? Is it your MP4 file that is corrupted which is why your VLC is not playing an MP4 video file, or is it your VLC Media Player which is lacking resources to play the file.

Check if your MP4 video file is playing on any other media player or not; if it is not playing, Click here to fix corruption in MP4 file.

Fix VLC Media Player Error | VLC not playing MP4:

Quick-Fix #1: VLC Media Player’s Video Output Mode might not be configured properly.

In this method all you need to do is to configure the video output mode and few settings in a proper way, follow below:

  • Open VLC Media Player and go to Tools
  • Select Preferences
  • Go to the Video section and click on Enable Video in case if it is not already clicked.
  • Check if “Windows Decoration” is clicked, if not, click it.
  • Click on the Output’s drop down menu and select X11 Video Output (XCB)
  • Save all these changes and restart your VLC Media Player for the change to take effect.

Quick-Fix #2: MP4 Video Codec problem, Convert your MP4 to VLC Compatible.

If an MP4 file contains a VLC incompatible video codec, then VLC will not play MP4.

You can download the VLC codec pack from the official VLC Media Player site.

Now, you just have to disable Hardware Video Decoding in VLC Media Player. MP4 is a container video format which generally contains a number of audios, video, and subtitle’s data.

Your hardware decoding of the player is not able to handle the rendering effects since your video might have too many subtitle tracks and the video card you are using is not able to accelerate the video which causes VLC to not to play MP4. The solution to resolve this is by disabling Hardware Video Decoding. How? follow the below steps:

  • Open VLC Media Player and go to Tools and then select Preferences
  • In the lower-left on the window, click on Show Settings and select All button
  • All the options will be displayed in the left now, navigate to Input/Codecs > Video Codecs > FFmpeg
    Fix MP4 files not playing in VLC
  • Disable the Hardware Decoding option.
  • Save all these changes and restart your VLC Media Player for the change to take effect.

If none of the above methods worked for you to fix the trouble with VLC player and MP4, there might be chances of MP4 file corruption. To Fix MP4 file corruption, you can make use of SFWare, the most trusted Video Repair tool.

SFWare Video Repair Tool built with a unique algorithm that lets the user to fix severe corruption or damaged on any video files including MP4, MOV, AVI and other formats. The tool is designed to work on a copy of your original file to keep the original video file untouched and unaltered.  Download and try repairing MP4 file for free..

Steps to repair MP4 video not playing in VLC using SFWare Repair MP4 Tool:

  • On the main screen of the tool, click on “Healthy File” and provide the location of a healthy MP4 file of the same codec.browse the healthy file
  • Now, click on Corrupted File and provide the location and click on the Repair option.
    File is being repaired
  • Wait for the MP4 video file repair process to complete.
  • Once the process is successfully completed, you can preview the successfully repaired MP4 video file by clicking on the Preview option and then save the file at any location of your choice.

With the above steps, the corrupt or unplayable MP4 file is repaired and now it should play on VLC Media Player too. This tool can be used to fix corrupted MOV files with no sound too. SFWare video repair tool is efficient enough to mend of MP4 video files and even large MOV files.


All the above mentioned sections of this article will certainly help you fix the issues if VLC is not playing MP4. This will help you configure VLC media player in a proper way. If you face any hurdles in repairing MP4 while using our video repair tool, you can always rely on our well-trained technical assistance team.

Know How to Fix MOV No Sound Problem in Windows and Mac


Most commonly, HD videos or 4k resolution videos recordings are saved in MOV file format. It can get quite disheartening when your favorite recordings play without any sound. In this article, you shall understand everything about no sound in MOV videos. Know why you would encounter no sound MOV problem and how to fix MOV Files with no sound issues in both Windows and Mac systems.

HD videos generally recorded on iPhone or digital cameras are saved in MOV file format. It can get quite disheartening when your favorite recordings play without any sound. In the following sections, you shall understand why you encounter no sound MOV files and how to fix MOV Files with no sound issues in both Windows and Mac systems.

A MOV file is a simple multimedia container file format developed by Apple and compatible with both Macintosh and Windows platforms. It contains various tracks that store several types of media data and is frequently used for saving movies and other video files.

In order to play a MOV file, an application should be able to recognize the specific codec present in the file. If an application is unable to read the codec, it displays a read error that leads to MOV no sound error.

Reasons behind MOV file no sound problem

The sound on MOV file can stop playing for various reasons, but in most cases, the reason might be as simple as the particular program’s incompatibility with the QuickTime file type. MOV files are QuickTime-based files, so trying to play MOV files on Windows might often lead to error MOV no sound.

Other causes such as unmatched codec in the file system library, system setting problem and video file corruptions also lead to no sound in MOV files and QuickTime 2048 error.

If you are wondering, is it possible to fix no sound problems on MOV file? It is definitely possible to fix the MOV files playing without audio. The next section of the article guides you on how to fix the error and make MOV files play again.

Quick Fix to Check MOV NO Sound Problem

1) Verify the speakers of your system. Also, make sure you have updated and the latest sound drivers to play media files. Try to play MOV files on different media players and verify the audio output.

2) Make sure that your system volume is not muted or set too low. To adjust your system volume levels, access the speaker icon on your computer’s taskbar or Mac’s dock.

3) Verify the sound card for device conflicts or update your sound card drivers.

After performing the above-mentioned verification process, try playing your MOV files. If the error still persists on the MOV file, try resolving the error using the methods given in the next section.

How to fix MOV no sound error?

You can try out the below-given methods to fix the MOV file no sound issue:

Method 1: Fix MOV no sound using VLC media player for Windows

Method 2: Fix MOV no sound on Mac by Resetting of PRAM (Parameter Random-Access Memory)

Method 3: Use proficient MOV file repair Tool (Windows & Mac)

Windows: Fix no sound MOV file using VLC media player
VLC Player to fix MOV no sound
Step 1. Download and install VLC Player on your Mac. Launch it and go to the Media menu, select Convert or Save.
Step 2. Drag and drop the damaged MOV files to it and click Convert or Save.
Step 3. Next window, give a new name for the destination file video.
Add the MOV fileStep 4: Next, select the Input Codec from the profile list and click Edit Selected Profile. Here, you can also edit the settings.

Step 5: Click Start

The VLC media player can only figure out the right codec to flawlessly play the MOV file with sound. Meanwhile, as VLC tries to embed a feasible codec in MOV file, it alters the file structure that may lead to further damage to the file. To know why your VLC not working, click on the given link.

MacOS: Fix MOV File no sound by resetting PRAM (Parameter Random-Access Memory)

Simply by resetting PRAM, various sound-related issues can be resolved.  You can also fix MOV file no sound Mac issues by installing an updated version of Mac OS X.

Step 1: Turn off your Mac if it is currently used
Step 2: Power on the Mac and immediately press ⌘command+option+P+R – hold these keys until Mac restarts.
Step 3: Release keys when you hear the startup sound again
Step 4: Test to see if you can hear the sound again and if you can adjust the volume.

Note: Resetting the PRAM in Mac can only fix sound related issues due to improper Mac settings.

If these methods didn’t work out, then the video file might be damaged. Moreover, if you are experiencing no sound issue with only one MOV file, then it means that the MOV file is corrupted. In such cases, it is highly recommended to use a professional video repair tool that fixes the error no sound in MOV files in three simple steps.

SFWare Repair MOV file is an automated tool designed to work with all types of MOV errors. It works by analyzing the audio and video streams separately to identify any audio & video issues. It easily fixes no sound problem in MOV files and adjoins the audio & video streams to generate the healthy playable MOV file.

Free Download for WindowsFree Download for Mac

How to Fix No Sound Problem in MOV files? (ALL Windows & Mac versions)

To fix no sound in MOV files, download and Install SFWare MOV File Repair Software on your system (Windows / Mac)

Mov File Repair

Step 1: From the main screen, select MOV/MP4 Repair option. Provide any healthy working MOV video file and a corrupt file that you want to repair. Click on Repair

healthy and corrupt fileStep 2: After the completion of the repairing process, click on the Preview option to view a repaired file.

file previewStep 3: If you are satisfied with the results, Save the repaired video in any desired location on the computer.

About SFWare repair MOV file tool:

Remo Repair MOV is a read-only program thus, it never damages your original file during the repair process

This utility can even fix your large and severely corrupted MOV, MP4 files that refuse to play on any media players and leads to a choppy video. Click here to Know-How to Fix Choppy Video File

It supports all Windows and Mac OS versions including the latest Catalina and macOS High Sierra, Sierra, El Capitan, etc.