MKV is a free container format that is usually used for storing movies. It can store multiple image, video, text, and audio tracks in one file.
Clideo's MKV Merger allows you to join videos, pictures, and music together. You'll also be able to convert the output file to almost any desired format.
The tool is online, so you don't need to download anything to your device and risk its safety. It's also free, each file that you upload can be up to 500 MB in size.
How to merge MKV files
Add MKV and other files
Click on "Choose files" to upload multiple files at once from your device.
Another option is to add them from Google Drive or Dropbox by clicking on the small arrow on the right of the button. The same arrow allows you to add a link to a video located in an external resource.
Combine MKV files
If you need to add more files, it's time to do that! You can use all three options from the first step on the top right.
Now, reorder everything you've added by dragging and dropping on the timeline below. The tool also allows selecting an aspect ratio and a crop option.
After that, add audio, trim it, and adjust the volume.
An last, select a format you want for the output video and click "Merge".
Save merged MKV
Have a final preview and make sure you like the result.
If so, download the video to your personal device or upload to cloud storage. If not, click "Back to edit" without needing to start over.