I don't think I've EVER referred to motion picture entertainment viewed in my own home on the television
as a "film".
My dad's super-8 home movies projected on a bedsheet tacked to the wall, ehhhh... OK.
Also, if it's on Tape, DVD or YouTube, it's even more commonly referred to as a "video", so we have another category to deal with, but I agree that "film" and "video" are terms inherited from the medium they are taken from, rather than a reference to the actual presentation.
If it's a feature-length motion picture presentation, it can always be called a "movie", regardless of the medium.
If it's viewed at a theater, "movie" and "film" equally apply, although weighted toward "film" if it's of foreign (e.g. Anywhere but
If it's viewed at home on a television or monitor, "video" and "movie" equally apply, but never "film".
If it's viewed at home on a television or monitor and it is not
a feature-length motion picture presentation, it will only be a "video", never a "movie".
My dad's super-8's projected on the bedsheet are never a "video", always a "movie" (with the qualifying prefix "home", as in "home movie"), but may qualify as a "film" if it's one of his amateur feature-length productions (of which he made two, BTW).
There's a Venn Diagram waiting to happen here...