: MKV files are "containers" that can embed malicious scripts or executables alongside the video data.
: Never download "recommended" codecs or players from the same site where you found the movie file, as these are frequently malware.
If you already have a legitimate MKV file (such as a personal backup of a physical disk) and need to play it safely:
For the safest experience, it is recommended to use official streaming platforms or purchase digital copies from verified retailers.