This article recommends 2 robust tools to help you convert YouTube to MKV, including an offline video downloader and ytmp3.gg (online). The general steps include inputting the YouTube URL, selecting MKV as the output format, and starting the conversion process.
Recently, I wanted to save some YouTube videos for offline watching. Considering that an MKV container can incorporate any number of audio, video, images, and subtitles into a single file, even if these elements use different types of encoding, it can offer me a more complete watching experience. In this context, I plan to convert YouTube to MKV.
After reading lots of relevant articles, I have selected 2 reliable methods to accomplish the conversion. In the following content, I will share the methods with you.
Why Download YouTube to MKV?
MKV files are multimedia container formats rather than audio or video compression formats. An MKV container can incorporate any number of audio, videos, images, and subtitles into a single file even if these elements use different types of encoding. For instance, an MKV file can contain H.264 video and audio in MP3 format.
Moreover, MKV files are designed with the further in mind, indicating that the files would not become outdated.
Matroska is designed with the future in mind. It incorporates features you would expect from a modern container format, like:
* Fast seeking in the file
* Chapter entries
* Full metadata (tags) support
* Selectable subtitle/audio/video streams
* Modularly expandable
* Error resilience (can recover playback even when the stream is damaged)
* Streamable over the internet and local networks (HTTP, CIFS, FTP, etc)
* Menus (like DVDs have)-- https://www.matroska.org/what_is_matroska.html
Nowadays, the MKV format is popular in the anime fan-subbing community, and you can come across it when you enjoy short video clips, TV shows, and movies.
How to Convert YouTube to MKV Offline
- Input YouTube URL.
- Save YouTube Videos.
- Convert YouTube to MKV.
If you want an offline YouTube to MKV converter, MiniTool Video Converter can be a great choice.
Step 1. How to Save YouTube Videos
MiniTool Video Converter is a YouTube video saver that supports batch downloads. It allows for saving up to 10 YouTube videos simultaneously. Moreover, this converter features an intuitive interface and is easy to use for every beginner.
1. Get MiniTool Video Converter
MiniTool Video ConverterClick to Download100%Clean & Safe
Download, install, and open MiniTool Video Converter.
2. Analyze YouTube URL
Visit the YouTube website and find the video you want to save. Then, copy the YouTube URL from the address bar. Next, go back to the Download Video section of MiniTool Video Converter and click the upper-left Paste URL option. Next, paste the YouTube video link into the URL box and click the Download option to start the link analysis process.

4. Set the Output Format and Start Download
In the output format window, select the desired output format and click the Download option to begin the download process.

5. Check the Output Video
Once the download process finishes, this program will automatically switch to the Completed section. There, click on the Play icon to view the output file. Or, click on the Folder icon to locate the output video.

Now, it’s time to convert YouTube to MKV.
Step 2. How to Convert YouTube to MKV
Go beyond a YouTube downloader, MiniTool Video Converter also functions as a YouTube to MKV converter, which offers you watermark-free, batch conversion. You can use it to convert up to 5 YouTube videos to MKV simultaneously.
1. Import the YouTube Video
In the Completed section of Download Video section, click on the More icon and choose Convert Video. Then, MiniTool Video Converter will go to the Convert Video section and import the YouTube video.

3. Select MKV as the Output Format
Expand the bottom Convert all files to access the output format window. There, switch to the Video tab and click on MKV. Then, select the desired video resolution.

4. Set an Output Folder and Start Conversion
Expand the bottom Output option to choose an output folder for the converted file. Then, click on the Convert option to start the conversion process.

5. Check the Output Video
When the conversion process completes, this video converter will automatically switch to the Completed section. There, click on the Play icon to view the output video. Or, click on the Folder icon to locate the output file.

MiniTool Video Converter is a top-grade YouTube to MKV converter.
How to Convert YouTube to MKV Online
- Input YouTube URL.
- Select MKV as the output format.
- Start the conversion process.
ytmp3.gg is a YouTube to MKV converter that doesn’t require any installation. It works well on various web browsers, including Firefox, Edge, Brave, Google Chrome, and more. This online tool has a well-organized interface, which makes every beginner to access it effortlessly.
1. Copy the YouTube URL
2. Paste the YouTube URL
Go to https://media.ytmp3.gg/youtube-to-mkv and paste the YouTube URL into the URL box.
3. Set the Output Format and Begin Conversion
Then, switch to the MP4 section and expand the output format option. Click on MKV and select the resolution you want. Next, click on the Convert option to start the conversion process.

4. Check the Output Video
Once the conversion process ends, go to the Downloads section of the web browser and check the output video.
With ytmp3.gg, you can convert YouTube to MKV effortlessly.
Bottom Line
How to convert YouTube to MKV? You can use MiniTool Video Converter to download videos from YouTube to MP4 and convert these videos to MKV. Meanwhile, ytmp3.gg can also help. If there are any problems when using MiniTool Video Converter, just send an email to support@minitool.com to ask for help.