When I was young, a "movie" was something you went to see in a theater, with seats in rows, and if you came in after the feature had started, an attendant would walk you down the aisle with a flashlight pointing at the floor, and show you to the row where you were to sit.
You watched images projected on a screen from a photographic film running through a film projector. The image you watched was VERY large, up to 20 feet high by 50 (or more) feet wide.
In addition to the large screens, a movie theater typically had a group of rather large speakers behind the screen capable of producing a wide range of sounds (i.e., 20hz to 20,000hz - the theoretical limit of human hearing) at soft or very loud volumes. The most well known of these speaker systems was the Altec-Lansing A7-500 (a 15 inch woofer in a ported enclosure with a horn speaker mounted on top with the crossover from the 15 inch speaker to the horn at 500hz). Some theaters would have six or ten of these behind the screen.
The photographic film was typically 35mm film, almost the same as used in 35mm "still" cameras, only very long lengths of photographic film. It used a projector built to handle the 35mm film and project it onto a screen by putting a light behind the film, and a lens in front of the film, that was focused to give a sharp image on the screen in front of the audience.
Today "film" is called "analog media" to differentiate it from "digital media," which does not depend on a whole picture to be projected, but relies on digital media holding digital information that is "translated" to a screen with pixel bulbs lighted by the digital signal in the digital media (obviously this is an over simplification of the digital process to create an image appearing to the eye like an analog picture).
You could also buy "8mm movie cameras" that used narrower (about 1/4 the size of 35mm film) photographic film to take pictures in sequence, which we called "movies" since they were using the same process (photographic film). There were smaller film projectors made to project these films on screens at home. Typically these home screens were about four feet high, although six foot high screens could be bought. These were typically called "movies" or "home movies."
The term "video" did not come into use until "video recorders" were available commercially as cameras to make personal.
Then, anything recorded on the "video recorders" we would watch on our TV screen (max size at the time was 21"). You watched something recorded on magnetic tape, using your television. At first the video recorders were using VHS tapes, played on a VHS player through your TV. Later versions of video recorders came out using smaller tape "cartridges" and finally dispensed with the VHS tapes (and tape cartridges), and recorded digitally to a hard drive, or large capacity solid state drive (SSD). You still watched it on you TV at home.
A "video" was not something recorded on photographic film. It was recorded digitally on magnetic media (tape, hard drive, SSD, etc). Some could even record "to the cloud" to a remote server via internet connection. These internet connections could be hard wired (aka ethernet) or by "WiFi" using wireless connections via some method similar to a radio. The media storing the recording was digital, not film.
These classic definitions, if followed, would mean the material produced by Jehovah's Organization would be videos (since we do not go to a theatre, pay admission, and sit in a venue with many rows of seats in a darkened space). And they are recorded by digital media, not photographic film.
Having said all of that, I now have a 77" TV (instead of 21") which is about 64 inches wide. When seated 10 to 12 feet away, it is almost the same visual effect as sittng in a theater watching film projected on a large screen. It is flanked by two high end electrostatic speakers (six feet high, two feet wide - older classic design "KLH Model Nine" rebuilt to new specs) which handle most sound above 40hz with amazing definition and clarity. The sounds below 40hz (where the electrostatic speakers volume drops off significantly) are handled by two Velodyne subwoofers. The sound from the audio system is equal to the sound produced by the A7-500 systems in theaters.
On that big TV I watch a lot of older things that initially were "movies" but have been re-recorded from the film media to digital media that the cable TV company sends out. The cable company offers 200+ channels (requiring their special "set top box" to decipher for the TV). The "box" from the cable company also has the ability to record a program from one channel, while I am watching another channel, or not watching at all. Sometimes what one wants to watch is broadcast at 3:00 A.M. At age 82 I am not a fan of getting up at that time.
Even though what I watch might have initially been on photographic film, it is now on digital media.
So, applying the critera of "what type of media" one is watching, the old "movies" are not on photographic film. They are digital media. So, perhaps they are videos based on type of media from which they are played.
But I still think of them as "movies" because that is what I though they were when they were first produced.
Advances in technology have blurred the lines between what is a "movie" and what is a "video" to the point that the two terms could now be considered interchangeable.
I believe some "movies" shown in darkened venues with many rows of seats are now on digital media rather than film. This further blurrs the lines between the two words.
Personally, I like to call the shorter ones "videos."
But, I cannot say someone is wrong if they call them "movies."
Thanks,
Jim