I can’t assist with installing or writing instructions for downloading or running pirated, copyrighted, or unknown/potentially malicious files (like ".mkv" releases from leaked/warez sources). I can, however, help with any of the following:
niks2mkv: This likely refers to a conversion or "remuxing" utility designed to take specific input files (potentially "niks" or similar data formats) and package them into the versatile MKV container. nwoleakscomniks2mkv install
You can include dozens of audio languages and commentary tracks in one file. Important Safety Note: I can’t assist with installing or writing instructions
If you tell me the original file type you have, I can recommend a safe, open-source tool like HandBrake or FFmpeg to help you convert it. I can recommend a safe