Audio and Video Out of Sync? Here’s How To Fix

Last night, when I played my MP4 video on Windows 10 PC, I found that the audio and video running out of sync. I feel really disappointed as it spoils my whole viewing experience. Thus, I need to fix this issue as quick as possible. Can anyone suggest me the ways to fix audio and video out of sync issue.

Well, if you are troubling with the same issue then don’t panic. Here are the few troubleshooting fixes you can try to fix audio video sync permanently.

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So, without any further delay let’s move ahead!

What Causes Video And Audio Out Of Sync?

There are several reasons that can cause Audio and video out of sync issues in videos. Like, if the audio codec is unsupported by the media player apps, then you will unable to hear sound in your videos.

Apart from this, sometimes this issue is also caused due to slow internet, outdated audio drivers, corrupted mp4 files or corrupted media player installation.

Abrupt audio sync, missing sound, or audio lag in videos can ruin your experience.

But do not worry, in the next section of this blog you are going to find some of the best solutions on fix audio video sync permanently issue.

How to Fix Audio and Video Out Of Sync Issue? (Basic Troubleshooting)

#1: Check the Internet Connection

Before trying any advanced solutions, firstly you should check your internet connection whether it’s working fine or not. This is because, a slow or unstable internet connection can cause several kind of issues such as – audio lagging or audio and video out of sync, video playing in slow motion, video black screen with sound etc.

You can check the speed of your internet connection on If you find the internet connection is slow then try switching the Wi-Fi connection or restart the Wi-Fi router & reconnect again.

#2: Restart Your System

If you are running too many apps in your system’s background along with media player, then it may take more CPU & causes delay between the audio and video playback.

In such a situation, you need to close all the background running apps using a Task Manager and restart your system once.

#3: Change the Browser

If you are watching the videos online then the temporary glitches on browser can cause audio or video out of sync issues. If this is the case, then try changing the web browser. Or you may also try to fix this issue by clearing the browser’s cache.

If the video is working properly fine on another browser then there is some issue with the browser on which you are playing the video.

#4: Try Different Media Players

Sometimes, the issue is caused by the media players on which you are trying to play the video. If it is so then try to play you MP4 video using different media players.

How to Fix Audio Video Sync Permanently?

#1: Update Video & Audio Drivers

As I discussed above, an outdated audio or video drivers can be major cause of audio and video out of sync issue. In such a situation, updating the system drivers can help you to tackle this situation.

Here’s what you need to do:

  • Press Windows + X keys together then click on Device Manager.
  • After that, double on Sound, video and game controllers to expand this option.
  • Next, open the speaker driver then select Driver tab
  • Finally, click on Update Driver

audio and video out of sync

#2: Run the Audio Troubleshooter

Whenever you run into the problems you can use the Windows inbuilt troubleshooting tools to overcome the situation

Since you are facing an audio and video out of sync issue, you can run the Audio troubleshooter to deal with this problem.

Here’s what you need to do:

  • Click on the Start menu then go to Settings.
  • After that, click on Update & Security >> Troubleshoot >> Additional troubleshooter.
  • Here, you need to select Playing Audio then click on Run the troubleshooter option.

audio and video out of sync

That’s it! Now the troubleshooter will scan your PC for issues. Once detected, attempt to fix them automatically.

#3: Use Video Editing Tool

By using the best professional video editing software like Adobe LightroomPremier Pro, Lightworks, or Final Cut Pro, you can solve how to fix audio delay in video easily.

By using video editing software, you can experiment with the settings to get perfect audio and video sync.

However, the editing programs are capable of fixing the audio lag issues. But, on the flip side, they are time taking and require a lot of expertise to get the best results.

Also Read –  9 Ways to Fix MOV File Only Playing Audio No Video

#4: Try Reinstalling the Realtek Audio Drivers

In few cases, it has been seen that the glitches in the audio drivers can cause several kinds of audio related issues including Audio and video out of sync issue.

So here, uninstalling and reinstalling the Realtek audio drivers can help you to tackle such issues.

  • Right click on the Start menu & choose Device Manager
  • After that, double click on Sound, video and game controllers to expand this option.
  • Now, you can see Realtek High Definition Audio option, right click on it & choose the Uninstall device.

audio and video out of sync

After completing the above steps, just restart your system and let the Windows to re-install your audio drivers. Once the audio driver is reinstalled successfully, you can watch the video again without any interruptions.

#5: Restore Audio Settings to Defaults

If you are facing audio and video out of sync issue in every streaming app or every browser on Windows 10, then try restoring your device audio settings to its default stage.

Here’s how to do so:

  • Right-click on Speaker/Audio icon from taskbar
  • Then, click on Sounds navigate to Playback tab
  • Now, open your default playback device > Properties.

audio and video out of sync

  • Or you can also double-click on your playback device to open its properties.
  • When the Properties dialog box will open, go to Advanced tab & click on Restore Defaults.

audio and video out of sync

  • If it’ll prompt you to confirm the process, then click Yes to restore the audio settings to default.

#6: Turn Off the Hardware Acceleration

You can also try to fix Audio and video out of sync issue by disabling the hardware acceleration feature. Sometimes, this feature might cause your browser to crash, lag or freeze.

Here’s how to disable the hardware acceleration:

  • Right-click on Audio/Volume icon from the taskbar
  • Then, click on Sounds and navigate to Playback tab
  • After that, click on Properties button or you may double click on your default playback device to open its properties.

audio and video out of sync

  • Now, choose Advanced tab then uncheck a checkbox that is next to the ‘Allow hardware acceleration of audio with this device.’
  • Finally, click on Apply then > OK.

Also Read –  9 Ways to Fix ‘VLC Could Not Identify the Audio or Video Codec’ Error

#7: Contact Streaming Services

Even after trying the above troubleshooting, if you are unable to fix audio video sync permanently issue then there is an issue with a particular streaming platform.

To verify that, you can try playing the videos on other streaming platform. If you find the streaming services is down for all platforms then you should wait for some time until the issue is resolved itself or you may contact the streaming service support team.

Try Video Repair Tool to Fix Audio Video Sync Permanently

As I already mentioned, Video Repair Tool is the best repairing software that can help you to fix this issue. This tool can help you to repair all types of corrupted, broken, or inaccessible video files from external storage devices.

It not only repairs sync audio and video but also fixes other issues of video file formats like MP4, AVI, FLV, WMV, AVCHD, F4V, MTS, MPEG, etc.

I am saying so because this software has amazing features like:

  • Easily repair corrupted, damaged, broken, unplayable MP4 videos
  • Fixes blurry, grainy, shaky, speckled, out-of-sync, jerky or video flickering issues on video files in just a few steps
  • Repair files that are saved in PC/Mac hard drive, memory card, external HDDs, USB drive, or any other storage devices
  • Preview repaired MP4 videos for free within the preview screen of the software.
  • 100% safe, secure, and easy to use.

So, simply download this program on your Windows & Mac operating systems and repair corrupt video files effectively.

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Let’s have a look at the step-by-step instructions on how to fix out of sync audio Mp4…

Step 1: Download, install and launch Video Repair software on your system. Click on 'Add Files' to add corrupted video files.


Step 2: Click on 'Repair' button to begin the repairing process. This start repairing your added video files one by one.


Step 3: You can click on 'Preview', in order to preview the repaired video file within the software and click on 'Save Repaired Files' button to save the repaired videos at desired location.


How Do You Sync Audio And Video On YouTube?

Well, to fix YouTube audio sync problems by audio timing adjustment slider appears in the video screen on your YouTube page by clicking the tool icon.

To do so, adjust audio timing to sync audio and video by moving the slider. It helps when watching videos that have out-of-sync audio, or when using wireless audio systems that have an audio delay.

How To Prevent Audio & Video Out Of Sync Or Other Video Issues?

To prevent audio video out of sync or other video related problems in the future, you need to read out the below mentioned tips & tricks.

  • Always try to use reliable video converter software
  • Never try to play the MP4 video file on a mismatched media player
  • Backup your important video & audio files on any storage device
  • Avoid downloading MP4 videos from untrustworthy sites


It’s quite common to encounter errors and issues while watching the videos or movies in streaming platforms. Audio and video out of sync is one of such issue.

However, the solutions mentioned above will surely going to help you to deal with such issue. No matter whether you are streaming the videos online or offline.

For an instant result, you can choose our recommended Video Repair Tool. This tool can help you to fix all kind of video or audio related issues.

Hope you like this post!

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