How to Merge MKV Files: A Friendly Beginner Guide

By Daniel Smith Mar 18, 2025 Edit Video

Have you ever found yourself with a bunch of MKV files that you want to combine into one? Maybe it's a series of video clips from your latest vacation or a collection of episodes from your favorite TV show. Whatever the reason, combining MKV files can make your life a lot easier. In this guide, we will show the best 3 simple methods to merge MKV files from two or multiple files. So grab your favorite snack, sit back, and let's dive into the world of video merging!

GUIDE LIST: Part 1: The Best Tool to Merge MKV Files; Part 2: 2 Other Tools to Help You Merge MKV Files; Part 3: FAQs

Part 1: The Best Tool to Merge MKV Files

ArkThinker Video Converter Ultimate is hands down one of the best tools to merge MKV and other 1000 digital formats. It's user-friendly, efficient, and packed with features that make video editing a breeze. Plus, it's perfect for beginners who want a hassle-free experience. Besides joining MKV files, it can let you add the background audio and subtitles to sync with the merged MKV files.

Ready to start merging your MP4 videos with ArkThinker Video Converter Ultimate? Just follow these simple steps:

Step 1

First up, head over to the official ArkThinker website and download the Video Converter Ultimate. Once it’s installed, go ahead and launch the program on your computer.

Free Download For Windows 7 or later Free Download For macOS 10.12 or later

To get those MKV videos merged, click the Add Files button at the top and select all the videos you want to combine. Or, if you prefer, just drag and drop the files right into the program.

Step 2

Now that your MKV files are imported, you’ll see little up and down arrows next to each one. Use these to rearrange the order of your videos, so they play in the sequence you want.

Step 3

Next, pick the format you want your merged video to be saved in by clicking the Output Format drop-down list. You can keep it as MKV or switch it up to other formats like MP4 or MOV if needed.

Step 4

Once everything’s set, tick the box for Merge into one file and click Convert All to start the merging process. After it's done, your newly combined MKV video will be saved on your computer.

And there you have it! You’ve successfully joined multiple MKV files into one video with this handy tool. Plus, if you want to add some background music or sync subtitles with a video, you can do that before exporting the merged video by clicking the Edit button in the main interface.

ArkThinker Video Converter Ultimate is an excellent choice for merging MKV files. It's easy to use, fast and offers high-quality output.

Pros :

Support over 20 tools for editing.
Fast MKV merging speed with GPU acceleration support.
Enhance MKV files.

Cons :

A subscription is required after 30 days free trial.

Part 2: 2 Other Tools to Help You Merge MKV Files

VideoProc Converter AI

VideoProc Converter AI is a powerful tool that simplifies video editing tasks, including merging MKV files. Using AI-enhanced technology, it automatically detects and adjusts the video content to ensure a smooth and seamless merge without compromising quality. Whether you’re combining multiple MKV videos into one or trimming parts for a more polished result, VideoProc makes the process fast and user-friendly, with easy drag-and-drop functionality and support for various file formats. It’s a great solution for anyone looking to quickly merge MKV videos with minimal hassle.

Here are the steps to combine MKV Files with VideoProc Converter AI:

Step 1

Download and run VideoProc Converter AI on your Windows or Mac computer.

Click on the Video button in the main interface. Drag and drop your MKV files into the program.

Step 2

If you want to keep the MKV format, select MKV in the Video section at the bottom bar.

• You can also choose other output formats by clicking on Target Format at the bottom left corner.

• Adjust the codec, resolution, frame rate, aspect ratio, bitrate, quality, and audio codec options if needed.

Step 3

When using VideoProc Converter AI, you have two great options for combining your MKV videos:

1. Merge option:

Check the Merge box to seamlessly join multiple MKV clips into one continuous video.

If your source MKV files have multiple audio and subtitle tracks, simply select the ones you need before exporting.

2. Merge and MKV Multi-track:

Select the Merge and MKV Multi-track option to combine these MKV videos into one file with multiple video streams. You can then play the final video and switch between media tracks using a powerful player.

Feel free to choose one or more subtitle and audio tracks. The MKV Multi-Track option will keep all of them for you.

Step 4

After all the settings are done, just click the Run button to start the MKV video merging process.

VideoProc Converter AI is a reliable tool for merging MKV files. Its AI technology enhances the video quality, making it a great option for high school projects.

Pros :

VideoProc Converter AI is a reliable tool for merging MKV files. Its AI technology enhances the video quality, making it a great option for high school projects.
Fast processing with good video quality.
Supports multiple video formats.
Additional editing features like trimming and cropping.
AI helps make the merging seamless.

Cons :

Not as advanced as professional video editors.
Requires a paid version for full features.
AI may not always optimize perfectly.
Can be resource-heavy on older computers.

123APPS

123APPS Online Video Cutter is a web-based tool that allows users to cut, trim, and merge videos, including MKV files, without needing to install any software. The MKV video merger feature lets you upload multiple MKV files, combine them into a single video, and download the result directly from the website.

Follow the steps to combine multiple files with this free online MKV merger tool.

Step 1

Go to online-video-cutter.com in your web browser.

Step 2

Click on the Open file button or drag and drop your MKV files into the designated area. You can also upload files from Google Drive, Dropbox, or by pasting a URL.

Step 3

Once the files are uploaded, you will see them on the timeline. You can drag and drop the files to arrange them in the order you want them to be merged.

If you need to trim or crop any of the videos, you can use the editing tools provided. This step is optional.

Step 4

After arranging and editing your files, click the Save button at the bottom-left side and select the output format. You can choose from various formats like MP4, MOV, AVI, and WMV.

Step 5

Click on the Export button to begin the merging process. The tool will combine your MKV files into a single video.

Once the merging process is complete, you can download the merged video to your device. You can also share it directly on social media if you prefer.

123APPS Online Video Cutter is a great choice if you're looking for a free and easy way to merge MKV files without installing any software. While it lacks some advanced features, it gets the job done.

Pros :

Free to use.
No installation is needed.
Works on any device.

Cons :

File size limits.
Needs a good internet connection.
No advanced editing options.
Privacy concerns with uploading files.

Part 3: FAQs

What are MKV files?

MKV (Matroska Video) files are a type of video file format that can contain multiple video, audio, and subtitle tracks in one file. They're popular for high-quality video content and flexible streaming.

Can I merge MKV files without losing quality?

Yes, using tools like ArkThinker VCU and VideoProc Converter AI ensures that the quality of your merged files remains high.

Are there any free tools to merge MKV files?

Yes, Weeny Free Video Joiner is a great free tool to merge MKV files without any cost.

How long does it take to merge MKV files?

The time it takes to merge MKV files depends on the size and number of files you're merging, as well as the tool you're using. Generally, it can take anywhere from a few minutes to an hour.

Conclusion

Merging MKV files doesn't have to be a daunting task. With the right tools like ArkThinker Video Converter Ultimate, 123APPS Online Video Cutter, and Weeny Free Video Joiner, you can easily combine your videos into one seamless file. Whether you're working on a school project, creating a personal video, or just organizing your video collection, these tools have got you covered.

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