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How to Convert to MKV from Any Format

Edited by Pat Bitton

September 17, 2019

The MKV file format has been increasing in popularity ever since high-resolution monitors became widely available, and so there has been a corresponding increase in demand for formats that can retain HD video quality. You can preserve HD quality in your videos by converting them to MKV, which also enables you to choose from multiple audio and subtitle tracks. And that is how the MKV format got its name – it's officially called Matroska Video after the Russian matryoshka dolls because all the video, audio, and subtitle tracks are kept within a single file, much like the nesting dolls are stored within one another.

If you want to convert video from your DVDs, Blu-rays, or elsewhere to MKV, or burn MKV to DVD, your best bet is a simple yet powerful MKV converter like Movavi Video Converter. It’s an all-in-one tool for Windows or Mac that converts video and audio between more than 180 media formats (AVI, MP4, MOV, MPG, FLV, M2TS, TS, WMV, H.264, DivX, AVCHD; MP3, WAV, FLAC, VOB, and more) and saves them to play on more than 200 mobile devices, including Apple iPad, iPhone, and iPod, Sony PS4 and PS3, Xbox One, and many smartphones, tablets, and media players. Use this handy application to trim, resize, and enhance the quality of your clips and movies too.

In this article, we’ll show you two ways to convert files to MKV – using a desktop app or an online converter. You can also check the comparison table to learn more about the differences between MKV and MP4 formats.

How to Convert MP4 to MKV and Vice Versa

With Movavi Video Converter, you can convert MP4 to MKV, MKV to MOV, AVI to MKV, and other popular formats without losing image quality. Download the free trial or buy the full version of the program and easily convert your videos to MKV and back! In the guide below, we cover how to change video format from MP4 to MKV. You can also use the guide to help you convert any other format to or from MKV.

Download and Install the Movavi MKV Video Converter

Get the MKV file converter from the Movavi website and install it following the on-screen instructions. This fast and practical software will let you change your video format easily – the interface is so intuitive, you’ll be up and running in minutes.

Add the Files You Want to Convert

Click Add Media and select Add Video to add videos you want to convert. With the MP4 to MKV converter from Movavi, you can convert your entire media library, choosing the settings manually or automatically!

Choose a Video Format

Open the Video tab at the bottom of the window and find the MKV category. Expand it and choose one of the MKV presets. If you want to adjust any advanced parameters, access them by clicking the Cogwheel button below the presets panel. If you are converting MKV files to MP4, AVI, 3GP, or any other format, just choose the appropriate preset for your required output format.

Convert MP4 to MKV or Vice Versa

To choose the folder where you want to place the converted files, click the Folder icon. Now click Convert to process the videos. Converting files can take anything from one to several minutes, depending on the file size and the number of files you‘re converting.

Movavi Video Converter creates your new file or files in your chosen format automatically. When the process is complete, a folder with the created files opens automatically.


Movavi Video Converter

The ideal way to get your media in the format you need!

  • Convert video, audio, DVDs, and image files
  • Enjoy lightning-fast conversion without quality loss
  • Improve quality, adjust sound, trim and join files before converting
  • Save video and audio clips for easy mobile access

How to Convert MKV Online

There’s also a way to quickly convert MKV online without downloading and installing any software. Go to videoconverter.com to use the online converter. Click the Add Your Media button on the main page to upload your video files. Choose the desired format in the drop-down menu under the Add Your Media button and click Convert to convert video files to MKV.

The online converter has a few limitations. You can only convert one file at a time, and the maximum file size is limited. These types of online service usually lack the editing options and compression preferences available in desktop software.

MP4 vs. MKV Comparison

Comparison parameterMKVMP4
File extension.mkv. .mk3d, .mka, .mks.mp4
Video-encoding formatsH.264, H.265, MPEG-4, MJPEG, Theora, VP9, DV, othersH.264, H.265, MPEG-2, MPEG-4, H.263, VC-1, Dirac, others
Audio-encoding formatsAAC, AC3, MP3, ALAC, VorbisAAC, MP3, AC-3, Apple Lossless, ALS, SLS, others
Device and OS compatibilitySome TVs, media players, and mobile devices. Windows PC (with a special codec installed), no native support under macOSCompatible with almost all devices and operating systems

While MP4 is more universal, MKV is a good choice for storing your HD videos. If you want to play your favorite movies on almost any device, convert your videos to MP4. If you want to retain the quality of your HD videos, choose MKV.