MKV Merge: How to Combine MKV Files into One

November 05, 2020Ashley Mae

Sometimes when you download a very long movie online, you may notice that the movie is split into several MKV files. You have to download the files separately and play them in a certain order. Sounds troublesome, right?

Or imagine that you have several video clips waiting to be uploaded. You absolutely cannot upload these raw clips without any processing.

In such cases, what you need is a professional MKV merger or an MKV video editor, such as MKVToolNix and Aiseesoft Video Converter Ultimate. You will learn how to use these methods to join all your video files into one. Please read on.

Merge MKV Files

Part 1. Best Way to Merge Multiple Videos into a Single MKV File

If you want to merge plenty of videos in different formats, you can give Aiseesoft Video Converter Ultimate a try. This MKV merger allows you to convert the video formats and combine the clips into a complete video at the same time. It supports 4K UHD, 1080p HD, and many other high resolutions, which means you can keep the original image/audio quality of your videos.

And thanks to the hardware acceleration technology, you can experience the fastest merging speed than other video mergers on the market. Besides, Video Converter Ultimate even enables you to edit your video like a pro. With the built-in editing tools, you can easily compress, crop, rotate, trim, and cut your videos. You are also able to add subtitles, audio tracks, stunning filters, 3D effects, watermark, and more to your work.

Video Converter Ultimate


Video Converter Ultimate - Best MKV Merger

  • Combine all your MKV video files into one without losing image/audio quality.
  • 30X faster converting speed to merge any high-quality videos in seconds.
  • Trim, cut, crop, rotate, add watermark, adjust effects, and edit the video as you like.
  • Support 1000+ video and audio formats as well as popular devices on the market.
  • Work on Windows 10/8.1/8/7/Vista/XP and Mac OS X 10.7 or above.
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With an intuitive interface, this software is super easy to operate. Here are the MKV merging steps you can follow.

Step 1.
Free download Video Converter Ultimate on your computer. After downloading, please follow the on-screen instructions to install the program.
Step 2.
Then launch this MKV merger. Click on the + icon to add the MKV videos you want to merge. Or you can drag the files to the center of the main interface directly.
Add Files
Step 3.
After uploading, please click the Format drop-down list and choose MKV as the output format. As for the resolution, you can select Same as source if you want to maintain the original video quality
Select Format
Step 4.
And if you want to change the order of current video clips, please click on the Up or Down icon on the right side. You can also change the saving path according to your need. Don't forget to tick the Merge into one file option. Now click Convert All to start the merging.
Merge Video

Part 2. Combine MKV Files with mkvmerge, MKVToolNix

Besides Aiseesoft Video Converter Ultimate, MKVToolNix is also a wise choice to merge MKV files. It is free and open-source software which integrates a series of useful tools, such as mkvmerge, mmg, mkvinfo, mkvextract, and mkvpropedit. This software is available for Windows, Mac OS X, and Linux.

Just follow the steps below, and you can get the merged MKV file with no hassle.

Step 1.
MKVToolNix is available for Windows, Mac OS X, and Linux. Thus, you can choose and download the right one according to your system. After the installation, open this program on your computer.
Step 2.
In the Multiplexer, you will see several tabs: Input, Output, Attachments. To upload the videos you want to merge, please right-click the Source files area to add source files. You can select the beginning video first.
Add File
Step 3.
Then right-click the file you have just added and find Append files. Now you can select the rest of the files you want to join.
Append Files
Step 4.
Select the destination to save the merged file. After that, please click Start multiplexing to start merging. Wait until the process is over, and you can enjoy the complete MKV video.
Start Multiplexing

Part 3. FAQs of MKV Merge

1. Can I merge MKV files with HandBrake?

When it comes to converting and editing videos, many people may think of HandBrake. But unfortunately, it doesn't support merging videos at present. So, the answer is no. You cannot use HandBrake to merge MKV files. If you want to merge media files, you can try the methods we have introduced - Aiseesoft Video Converter Ultimate and MKVToolNix.

2. What is mkvmerge?

It is part of the MKVToolNix package. Mkvmerge can help you merge different multimedia files and save them as one MKV file. But it is a command-line program, which can be hard for some users to operate. So, here comes mkvmerge GUI (also known as mmg), a simpler version of mkvmerge with an intuitive interface, which makes the combination much easier.

3. Does MKVToolNix reduce quality?

No, MKVToolNix does not reduce the video quality of your files after multiplexing. If your video is in high resolution, you'd better use a professional HD video player to play the files. Otherwise, there may be quality loss during the playback.


So far you have learned 2 ways to merge MKV files. Aiseesoft Video Converter Ultimate is easier to understand and provides many practical tools that you can use to refine your video. As for MKVToolNix, maybe you can follow the guide above to merge some of your files, but it will take much more time to master this program. And the documentation it offers is hard to understand.
If you find this post helpful, please share it with your friends. And you can leave a comment below if you have any questions or suggestions.

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