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Summary: Are your videos in VLC Media Player playing out of sync? Video delay or sound lag can be fixed by using VLC built-in features. This post shares various methods to fix audio sync issues in VLC on Windows, Mac, and Android device. Also know about Stellar Repair for Video, the best software to fix out-of-sync videos.

The VLC Media Player is an outstanding tool. Not just it can play almost any type of video, it has several other useful features. But even the best tools have their flaws. One such glitch witnessed by VLC users is videos playing out of sync in the player.

Although various VLC updates fix bugs from time-to-time but this problem is consistent and can appear with no specific reason. Sometimes audio or video lag goes away on its own. But there are times it can continue to bother for long.

So if you’re also facing such issues, see the methods shared below to fix audio video sync issues in VLC Media Player on Windows, Mac and Android devices.

How to fix out of sync audio on VLC Player?

VLC Media Player has built-in features that allow you to fix audio lag or sync issues in video playback. Below are 4 ways you can try to fix audio sync issue in VLC:

  1. Fix VLC audio delay using Keyboard shortcut keys (temporary fix)
  2. Set Track synchronization value (apply separately for every video)
  3. Set Audio desynchronization compensation (permanent fix for all VLC videos)
  4. Adjust audio delay in VLC on Android phone (apply separately for every video)

Method 1. Fix VLC audio delay using Keyboard shortcut keys

You can fix VLC audio delay on Windows or Mac using Keyboard shortcut keys. You can shift the audio up and down in increments of 50ms. Although fixing out-of-sync audio in VLC Player using the shortcut keys is a temporary quick fix. This method will only fix the audio problem of the current video playback in VLC.

Open the video in VLC Media Player on your computer. If the audio plays before the visual, then slow down the audio by hitting the ‘K’ key on Windows PC keyboard. If the audio plays after the visual, then fasten its speed. For this, press the J’ key on your PC keyboard.

If you are a Mac user, press the ‘G’ key to slow down the audio and ‘F’ key to increase the audio speed.

Listen to the audio carefully. Make sure it matches with the video. The player will show the increase/ decrease in audio delay by 50 milliseconds (ms) each time you press the keys. You will see the message of audio delay with time in milliseconds on the top-right of the VLC Player’s screen. Though this message goes away very quickly.

Method 2: Set Track Synchronization Value to fix VLC Player sync problem

You can set Track synchronization value of a video in VLC to fix audio lag in a playing video. Remember, this setting will work only for the current video playing in VLC. Each time you play a new video, you will have to again set the Track synchronization value, even if it’s a repeat play of the same video.

Steps to set Audio track synchronization in VLC:

  • Open then video in VLC Player.
  • In the menu bar, clickTools > Effect and Filters.
  • Click on Synchronization tab.
  • Under Audio/ Video, enter Track Synchronization Value. A positive value will delay the audio while a negative entry will hasten the audio in the video.
  • Next, click Close.

Method 3: Set the VLC audio desynchronization permanently

Often users ask, every time they play a video in VLC, they have to manually adjust Audio track synchronization to get audio in sync with the video. So is it possible for this setting to be saved permanently?’

The answer is ‘Yes’. You can apply the settings for once for all the videos you play in VLC. For this, use the ‘Audio desynchronization compensation’ feature. It would fix audio video sync permanently in VLC Player.Unlike the Audio track synchronization value, which you have to reset every time, you need to set the ‘Audio desynchronization compensation’ value just once. The settings get saved for the all the videos until you change it again.

Steps to set ‘Audio desynchronization compensation’ in VLC:

  • Open VLC Player.
  • In menu bar, click to follow Tools > Preferences.
  • Click the Audio tab.
  • Check in All option under Show settings at the bottom-left corner.
  • On the right pane, under Audio, set Audio desynchronization compensation. Set the value to positive, if audio lags behind the video. If the audio is playing ahead of video, set to negative value.
    E.g. If audio lag is 2 seconds, you can set Audio desynchronization compensation to +2000 milliseconds. When the audio is 2 seconds ahead of video, set it to -2000 milliseconds.
  • Click Save.

The video or movie should now play without any audio sync issue in VLC Player.

Method 4: Adjust audio delay in VLC on Android device

‘Until now I was using VLC as default media player on my Android phone without any issues. But recently, the videos have started playing out of sync. I tried to fix it by using the audio delay option but couldn’t. How to adjust audio delay in VLC on Android?’

The Android version of VLC has an audio delay feature, wherein you can adjust the audio speed as per the requirement and fix video audio sync.

Steps to sync audio in VLC on Android:

  • Open a video in VLC Media Player.
  • From the interface controls, click on the second icon at the bottom.
  • From the options, click Audio delay.
  • Click on the + or – button to increase or decrease the audio speed in your video. The + button will delay the sound by 50 milliseconds, whereas the – button will hasten the sound. Press the + and – buttons until the audio gets synced with the video.

However, the settings that you make in the video will be temporary and will be removed when you close the video. Next time when you have to play the same video, reset the audio delay.

VLC fix for out-of-sync videos didn’t work? Here’s what you can do…

When the above methods don’t fix audio sync issue in VLC videos, it indicates videos corruption.

So check if you are facing audio sync problem in VLC Player for a particular or a few video files?

Also try to play your videos in different players like MX Player, Kodi, Winamp etc. If the audio video sync issue persists in other players, then the problem is with your video files. They might be damaged or corrupt. This calls for a video repair software that can fix corrupt sound sections in a video file.

Note:Not all video repair software are advanced enough to fix audio problems in videos. So, before choosing one, make sure it is capable to fix sound issues in a video file.

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Here we recommend one such tool— Stellar Repair for Video that can repair corrupt sound sections, file header, frame movement, etc., which usually result in out-of-sync, audio lag, missing sound or stuttering issues.

How to fix audio sync issue with repair software

Simply download it on your Mac or Windows PC and follow the onscreen instructions. The video repair process completes in 3 steps –

Step 1: Click Add File to insert the corrupt video file/s.

Step 2: Click Repair.

Step 3: Preview and click Save Repaired Files.

You don’t need to do any resetting or learn to use the software. It’s easy-to-use and has advanced algorithms that work without you making any effort.


It’s annoying when your favorite VLC Player suddenly starts playing videos out of sync. But the best thing about VLC is that it can fix its own glitches. You can use various features in VLC to fix video audio sync problem.

However, if you are not able to fix audio sync with VLC, there are chances of videos being corrupt. You can use stellar Repair for Video to fix audio sync problem in VLC media player. But before using the software, try the methods given above to rule out or ascertain video corruption.

Hope the post was helpful. Do share how you could fix out of sync videos in VLC Media Player on your system.

Also read:

Oct 16, 2020 • Filed to: Photo/Video/Audio Solutions • Proven solutions

'My VLC can't play MKV files. I tried every solution I could find on the forums, Yahoo answer, but it still stutters on playback. Should I give up on VLC because of this?'

The high definition files hold audio, video, image, and subtitle content in a single container even though they have different formats. Many users turn to VLC media player to play these massive files and end up facing problems.

The most common ones when playing MKV files on the VLC player are VLC audio delay, playback stuttering, fuzzy image, and buggy interface quirks. With these issues, users are left with one or two options, like using a second-best alternative VLC media player or converting MKV files to a better compatible video format MP4 or MOV.

Along with these options, the user ends up getting more hassled in solving the issue. Today, plenty of MKV repair solutions are available in the market to tackle the problems, but it is essential to opt only for reliable, secure, and user-friendly repair tools.

Table of Content

Does VLC Play MKV Files?

MKV is also known as Matroska Video file, which is free, open multimedia that differentiate from MP4, AVI, and many other standard extension files. However, MKV is not the video file that all media players can support to play.

On the other hand, the VLC media player is a portable, free, and open source cross-platform multimedia player. It is available worldwide for desktop operating systems and even for mobile platforms, like Android, iOS, iPadOS, Tizen, Windows 10 Mobile, and Windows Phone.

The VLC player can easily recognize and play most multimedia files and DVDs, Audio CDs, VCDs, and various streaming protocols, including MKV files. It allows converting the MKV video to simpler formats like MP4, which is compatible with most modern devices.

So YES, usually, VLC does play MKV video files.

4 Solutions to MKV File Not Playing on VLC

MKV format is by default supported by VLC. It can easily read and open MKV videos. Even so, many users face issues whenever they paly MKV videos on the VLC media player.

The most common errors that usually occur are MKV file not playing, grey screen, pop-up error messages while playing MKV file, downloading MKV indefinitely, choppy videos, no sound, errors on external subtitle and many more. At the same time, there are various step by step solutions provided online to tackle the troubles.

Issue 1. VLC Skipping MKV or HD MKV

  • Go to VLC Menu – From Tools menubar - Select Preferences option.
  • Select All Radio Button on the bottom left from the dialog window.
  • Go to the Input/Codecs section – a list will appear.
  • Select the File Caching(ms) option under the advanced section.
  • Set it to 1000.

Issue 2. Choppy Video While Playing MKV and HD MKV on VLC

Choppy videos spoil the fun of viewing experience. There can be several reasons behind a rough, jerky, or broken video. Reasons include faulty SD cards, technical glitches, audio/video codec issues, outdated media players, corrupt or damaged video files, unsupportable video file format, etc.

  • Go to VLC Menu – From Tools menubar - Select Preferences option.
  • Select All Radio Button on the bottom left from the dialog window.
  • Select Input/Codecs option.
  • Select the Video Codecs option.
  • Select FFmpeg option - Disable Hardware Decoding option on the list that appears.

Issue 3. VLC Media Player Has No Sound

Most VLC users get frustrated when the VLC media player produces no audio while playing the videos. Like viewing, aural experience is equally essential for enjoyment. If the problem continues to persist after checking all the sound-related panels and speakers on our devices, just check the steps.

  • Go to VLC Menu – From Tools menubar - Select Preferences option.
  • Click on the Audio icon.
  • Select the Enable Audio option.
  • Go to Output option and Select options from Output Module and HDMI/SPDIF audio passthrough.

Issue 4. MKV file is corrupted or damaged

In some cases, the MKV file may get corrupted or damaged, and thus VLC fails to play it. But you can try a video repair tool to fix it.

Wondershare Video Repair is one of the robust tools of modern times in the market. The ultimate corrupt video file fixer repairs videos from different devices, like memory cards, SD cards, computer hard drives, digital cameras, action cameras, etc.

The video file corruption can be due to memory card error, file transfer error, interrupted system shutdown, corrupted recovered videos, virus attacks, or any other reason. Wondershare Video Repair works to repair them. It supports a wide range of video formats with different damage signs.

Moreover, the powerful software guides us on how to recover a corrupt video file instantly with easy steps. How easy are they? The instruction shows you the easy task - 4 steps to repairing the damaged MKV file using the MKV Video Repair tool.

Step 1. Add Damaged MKV Video File

Firstly launch the application on the computer. Click the Add button or Add video and start repairing the option to add damaged videos.

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Step 2. Repair Damaged MKV Video File

  • Select multiple video files for repairing.
  • Select the Repair button to start the process.

Step 3. Preview and Save Repaired MKV Video File

  • The repair process will take some time.
  • Once the process completes, a pop-up screen will display.
  • Once selected, it starts repairing MKV video files.
  • Click on the preview button to see repaired MKV files.

Step 4. Advanced Video Repair (Optional)

  • The Advanced Repair mode helps you repair severely corrupted video files. Click on the button.
  • A new window will display and click the Folder icon to browse and choose a sample file.
  • Click on the Repair button.

Step 5. Save Recovered Videos

  • The repair process is over in some time.
  • Save the repaired MKV video file at the desired location.

This software also enables you to repair MP4 videos.

2 Tricks on Playing MKV Files on VLC Smoothly

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Tip 1. Convert MKV Files to More Compatible Formats

If the error screen, choppy videos, no audio, dragging, or any other type of problem persists, convert the MKV file to DivX, WMV, MPEG-4, and other VLC-supported formats.

Tip 2. Play MKV Files Sleekly with VLC Alternative

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5KPlayer is the called the second-best VLC alternative available globally to meet the user demands. It is embedded with 450+ video codec and 180+ audio codec, the need to install third-party software, plug-ins, or any codec pack like CCCP - the one VLC needs to play MKV are not at all required. There are many features which make VLC alternative a better and superior option compared to VLC on Video playback.

  • It supports MKV (H.265) fluently without issues.
  • Allows playing 4K MKV on both Mac and PC.
  • It contains a media library.
  • No DVD problem.
  • Easy to download.
  • Drag and drop MKV files and enjoy high-quality video viewing without interruptions.

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