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The Easy Solutions to VLC MKV Playback Issues and Play MKV on VLC Smoothly

Author by Vita

Updated on Aug 17, 2020

Normally, VLC can handle almost all the media files you throw at it. But there's an exception to everything. People are sometimes troubled by VLC not playing MKV issues. This article gives overall and effective solutions to the problems. Most importantly, the unsupported MKV codec is the most common case, so you can convert incompatible MKV videos to the one supported by VLC. Install the quickest MKV video converter to fix the VLC MKV problems at a stroke:

Does VLC Play MKV?

VLC media player is a multiple-functional and cross-platform media player, and you can use VLC to play DVD, ISO, and various videos and audio files. However, when people play MKV movies with VLC, the VLC not playing MKV problems are frequent. Does VLC play MKV? According to the VLC’s official website, VLC media player supports MKV and it’s also true that most MKV files can be opened by VLC easily. However, sometimes you may encounter some problems. This article lists the common VLC MKV playback issues and gives the corresponding solutions.

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Four Common VLC MKV Playback Issues and Effective Solutions

VLC no Sound MKVVLC no Sound MKV

1. There is No Sound or the Audio is Out of Sync with Video

When you play MKV with VLC, you may meet the problem that you can see the image but can’t hear the voice. Check whether the video has been muted. In the lower right of your computer, press the speaker icon on the Toolbar > Click on “Mixer” and unmute VLC media player. If this method doesn’t work, adjust VLC audio setting as follows:

Step 1. Run VLC and import the MKV files.

Step 2. Press Tools on the menu bar, select Preferences, and then click on Audio on Preferences window.

Step 3. Check the Enable audio box, and choose Automatic in Output module drop-down list. Finally press Save button.

If you meet with the VLC not playing MKV normally problem that the audio is out of sync with the MKV video, try this way >> Fix Audio Sync Problems in VLC.

Adjust Subtitles of MKV for VLC Adjust Subtitles of MKV for VLC

2. VLC Subtitle Delay Issue

Since MKV supports both hard-coded and soft-coded subtitles, people like to play MKV with external subtitles yet sometimes the VLC MKV subtitle not loaded or delay error would occur. You can easily fix VLC subtitle delay issue in a few clicks.

Step 1. Run VLC and import a MKV file.

Step 2. Go to VLC Menu Tools > Track Synchronization.

Step 3. Locate the Subtitle track synchronization under Synchronization.

Step 4. Fill in a value to adjust the subtitle to be sync with the MKV file. For example, if the subtitle is 2 seconds faster than the scene, input 2.000s on “Subtitle track synchronization” box. If it’s 2 seconds slower than the scene, input -2.000s instead.

Tips. You can also press “H” and “G” shortcut key to sync subtitles with the dialogue. 

Fix .mkv VLC IssuesFix .mkv VLC Issues

3. VLC Skipping MKV Files

If you find that a MKV video is skipping, check out the File Caching (ms) option under Advanced. Here are the steps on how to fix this VLC not playing MKV issue. 

Step 1. Go VLC Menu Tools > Preferences.

Step 2. Check the All button below Show settings.

Step 3. Go to Input/Codecs Section and scroll to the bottom of the Input/Codecs list on the right to locate File caching(ms) under advanced section. Set the value to 1000

Step 4. Press Save to complete the setting.

VLC Plays MKV FilesVLC Plays MKV Files

4. The Lagging or Choppy Video Playback

There are many factors contributing to this problem. For example, the older version of VLC can’t handle H.265 / HEVC completely, and if the MKV video is encoded with H.265, VLC may fail to play it smoothly. You can update VLC to the latest version to fix the VLC MKV playback issue. More likely, if the CPU or GPU of your computer is not competent to decode the MKV videos with new codecs, such as H.264 / AVC and H.265 / HEVC, you would encounter lagging video playback. So you can try to disable hardware decoding.

Step 1. Open VLC media player. Go to Tools > Preferences window.

Step 2. Select Show setting as All, choose Input/Codec> Video Codecs > FFmpeg, and select Disable in Hardware decoding drop-down list.

Step 3. Click on SAVE to save your settings.

A Quick and Permanent Method to Fix VLC not Playing MKV and Other VLC MKV Playback Problems

If you have tried the methods above, but the MKV VLC playback problems still exist, here you can try another quick and effective method. Just convert MKV to a more popular format like MP4 or transcode the MKV files with H.265 or H.264 codec to a compatible MKV codec for VLC like DivX and MPEG-4. Therefore, you need a simple yet professional video converter. WonderFox HD Video Converter Factory Pro is a reliable and powerful MKV video converter that can convert MKV to MP4, convert MKV to AVI, convert MKV to DivX and more other formats and codecs in simple steps so that you can play MKV on VLC without any incompatible issues. Let’s see how to fix VLC won’t play DVD with the software

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Three Steps to Convert or Transcode MKV Files

Add MKV Files into the Program

Before start, please free downloadfree download and install the software on your PC.

Step 1. Add MKV Files into the Software

Launch HD Video Converter Factory Pro and open Converter. Click on “Add Files” to import the MKV files or you can directly drag and drop the files into the window. The software supports batch conversion mode to convert at most 10 files synchronously for solving VLC MKV issues.

Choose a Needed Format or Codec

Step 2. Convert MKV to Other Format or Transcode MKV

Click on Output Format on the right of the main interface. Under Video tab, you can convert MKV to MP4 for solving VLC not playing MKV, convert MKV to WMV for windows or convert MKV to MOV for Mac. Besides, you can directly transcode MKV to codec, such as DivX, XviD, VP9, etc.

Tips. If you don’t want to change the MKV video format. You can choose MKV as the output format and transcode MKV in Parameter settings window. Just click on Parameter settings button below the format profile, and open the Encoder drop-down list and choose a codec you need.

Start the Conversion Process

Step 3. Start the Conversion in One Click

Click on the inverted triangle icon on the bottom to specify the output folder for saving the converted videos. After that, click on Run to start converting MKV to MP4 or other format and codecs you need. WonderFox HD Video Converter Factory Pro supports GPU and CPU acceleration to speed up the conversion dramatically. Once it completes the conversion, you can play the converted files on VLC smoothly.

Now you can try these methods to fix VLC MKV playback problems. If you find this article useful, please share it with more friends.

Install WonderFox HD Video Converter Factory Pro

HD Video Converter Factory Pro is surely the quickest and once-for-all solution to fix the problem that VLC won’t play MKV. It also has many other useful features, like video downloading, file size compression, video editing and so forth. Free download it now to play any videos and audio on kinds of platforms and programs freely.

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Can't Play DVD on VLC? Try this Troubleshooter

Convert DVD for VLC

WonderFox DVD Ripper Pro

This software can bypass the latest DVD copy-protections and convert DVD to MP4, AVI, MKV, MOV, WMV, MPG and other digital formats. So you can easily play the converted digital files on VLC and even watch DVD movies on your mobile phone. It also supports 1:1 quick copy DVD to ISO image and DVD folder to digitize your DVD library.

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