Convert MP4 to MKV
With FileStar you can easily convert MP4 to MKV. Accessible directly in your right click menu for single or batch MP4 processing. How to convert MP4 to MKV:
1. Download and install the latest version of FileStar. (https://filestar.com)
2. Right click on one or more MP4 file(s) on your desktop and select Convert with FileStar.
Type "convert mkv" in the search box.
3. Press Run.