How to Convert MKV to MP4 on Windows and Mac

If you try to play a video in MKV format on TV, an Android phone, iPhone, or a third-party video player, chances are the video will not play or open. This will leave you wondering whether there’s some issue with the file. Well, it is not! It is the format that’s causing the trouble. Fortunately, transcoding files from MKV to MP4 is quite easy. Here are 4 ways to help you convert MK4 to MP4 on Windows and Mac.

But first, let’s understand the MKV and MP4 formats a little. MKV stands for Matroska, and both MKV and MP4 (MPEG-4) are container formats to store audio and video. Further, MKV is a flexible, open-standard video file format and is widely used for HD videos. However, unlike MKV, MP4 has better performance, and most importantly, is widely supported and compatible.

So if you wish to play videos on multiple devices, here’s how to convert the video format.

1. Turn MKV Into MP4 Using VLC

VLC Media Player is a free and open-source cross-platform media player software. It lets you play almost all multimedia files, including those in MKV format. Although not many know, VLC also helps convert videos into different formats. Follow the below steps to convert MKV to MP4.

Note: If you want to run the video on VLC, you don’t need to convert the file type.

Step 1: Open the VLC media player app on your computer.

Open the VLC media player app

Step 2: Go to Media and select Convert / Save.

Tip: You can press ‘Ctrl + R’ to quickly access ‘Convert / Save.’

Go to Media and Select Convert

Step 3: In the Open Media window, click on Add.

click on Add, navigate and select the MKV file

Step 4: Now, navigate and select the MKV file you want to convert.

click on Add, navigate and select the MKV file

Step 5: Click on ‘Convert / Save.’

Click on Convert / Save

Step 6: In the Convert dialog box, select ‘Video – H.264 + MP3 (MP4)’  from the drop-down menu next to Profile.

select 'Video - H.264 + MP3 (MP4)'

Step 7: Click on the Browse button and select the file destination. 

Note: Rename the file to prevent VLC from overwriting the original MKV file if in the same destination. 

Click on the Browse button

select the file destination

Step 8: Now, click Start. 

click Start

There you go. The VLC media player timeline will show the conversion progress. Once complete, it will save your video to the destination folder.

Even though the VLC media player is a readily available tool on Windows and Mac, the converted file sometimes loses audio. Hence, if you wish to take the safe route, try the next method below.

2. Change MKV to MP4 Using Online Tools

If you don’t already know, CloudConvert is a multi-format online freemium video converter that lets you convert MKV video files to MP4 instantly without any complications. Follow along.

Note: The free tier offers 25 conversions per day, and the file size is limited to 1 GB.

Step 1: Go to the CloudConvert website using the below link and click on Select File.

Go to the CloudConvert website

Step 2: Now, select the MKV file to convert. 

select the MKV file to convert

Step 3: Click on the drop-down next to the uploaded file and select MP4.

select MKV to MP4

Step 4: You can customize the output settings by clicking on the gear icon (Settings).

You can change the video resolution, aspect ratio, video codec, and more.

customize the output settings

You can change the video resolution

Step 5: Click on the Convert button to begin converting.

Click on the Convert button

The speed of the file conversion process will depend on your internet connection speed.

Step 6: Click on the Download button.

This will save the video to your local hard drive.

Click the Download button

There you have it. The video will be converted to MP4 and saved on your computer. And yes, you can delete the video from the CloudConvert server. All you need to do is click on the ‘X’ button next to the video title.

CloudConvert takes 24 hours to delete the video from its server after you remove it. However, if you are concerned about your privacy, you can convert the MKV file locally on your PC. Follow the steps below.

3. Convert MKV to MP4 Using Offline Software

WinX HD Video Converter Deluxe is one of the best offline software that not only lets you convert MKV video to MP4 but also other video formats. The best part is that, unlike online formatting, WinX HD Video Converter Deluxe comes with GPU acceleration tools to allow for fast conversions.

However, the only limiting factor of the software is that in the free tier, it only allows you to convert files for up to 5 minutes and one video at a time. That said, if you are converting a short video, follow the steps below.

Step 1: Download WinX HD Video Converter Deluxe using the link below. Once done, install and run it.

Download WinX Video Converter Deluxe

Step 2: Click on Video at the top left and select the video you want to convert.

Note: If you are on a premium plan, you can batch-select multiple files to convert at once.

select the video you want to convert

Step 3: In the Output Profile dialog box, select MP4 Video under General Profiles.

Output Profile dialog box

Step 4: Now, balance the quality and size of the video using the slider and click on OK. 

Note: The lower the quality, the better the conversion speed, and vice versa.

balance the quality

Step 5: Select the file’s destination using the Browse button.

Note: By default, the output files will be stored in C:UsersadminVideosWinXVideos

Select the file's destination

Select the file's destination

Step 6: Finally, click on the Run button to start the conversion process.

click the Run button

That’s about it. The video will get converted and saved to the destination folder you selected. But if you are not looking to convert a short video and don’t want to pay, you must try the method in the next section. 

4. Transcode MKV to MP4 Using Open-Source Alternative

HandBrake is a free open-source video converter available for Windows, Mac, and Linux. It is easy to operate, and much like any other media converter software, it supports almost all media formats for conversion.

Here’s how to convert an MKV file to MP4.

Step 1: Download and install HandBrake using the link below.

Download HandBrake, install and run it

Note: HandBrake may need Microsoft DotNET (.NET 6.0 SDK x64) to work. Download it from the below button.

Step 2: Now, open HandBrake and click on File.

Tip: You can also drag and drop the file onto the app.

Open HandBrake

Step 3: Now, select the MKV file to convert.

select the MKV file to convert

Step 4: Under Summary, click on the drop-down menu next to Format and select MP4.

set the Format to MP4

Step 5: Click on the Browse button to select and save the converted file location.

Tip: You can rename the file if you want.

Click the Browse button

Step 6: Finally, click on Start Encode.

click on Start Encode

That’s it. HandBrake will start the conversion process and save it to your desired location. Mind you, the video’s processing and conversion depend on many factors, such as file size, system capability, and so on. 

FAQs on Video Format Conversion

1. Can Windows read MKV?

Windows doesn’t support MKV format natively. You will have to use third-party video players like VLC or KM Player.

2. Which is better MKV or MP4?

Each video format has its advantages and disadvantages. In the simplest words, MKV is used more often to turn DVDs and Blu-Ray discs into video files, while MP4 is more compatible and has less file overhead.

3. Does renaming MKV to MP4 work?

No. Renaming MKV to MP4 does not change the format of the video.

Convert and Play Anywhere

MKV is the basis of WebM video, which is dedicated to developing a high-quality, open video format for the web that is freely available to everyone. However, to reach out to the masses, it has to be compatible with TV, phones, and other devices, which, currently it is not. On the flip side, MP4 files are easily compatible with almost all the devices currently on the market.

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