Again, these options may be limited depending on. In VLC, when a movie is playing, across the top menu click on Subtitle > Sub Track > Disable.
If you don’t want to fool around with trying to edit your movies, sometimes you can turn them off in your media player. Download, install and launch EaseFab Video Converter and then import the MKV file to the program by directly dragging. Download, install and launch EaseFab Step 1. How to Remove Hardcoded/Soft Subtitles from MKV, MP4, AVI Movie on Mac/Windows. Video taken from the channel: John Sourour