If you have a file named Off_the_Grid.mkv , it is a container that likely holds: : Often 4K or 1080p.
For those interested in working with MKV files in an "off the grid" context, several tools and software are available: off the grid mkv
If you recall additional details (year, director, or series), I can narrow it down. If you have a file named Off_the_Grid
However, if you mean a different film or a TV episode, possible completions include: I can narrow it down. However
as Guy: A grizzled, intellectual scientist turned survivalist.