As a rule, a video film consists of episodes that tell about individual events. On the one hand, each episode can be considered as a small film, but, on the other hand, it has no independent meaning, so it should not be superfluous, falling out of the general structure of the film, should not contradict the idea of the film.
At the same time, episodes consist of scenes showing the environment and the actions of the characters in one particular place. Scenes are mounted from frames - pieces of film between adjacent moments of turning on and off the recording on the video camera (not to be confused with a video frame — one full scan of the TV screen, which lasts 1/25 seconds!). Some frames of one scene are combined in such a way that they are perceived as a whole, without joints, forming a so-called editing frame.
Here it makes sense to introduce another structural unit of the film - a clip (or fragment), which includes 1-3 episodes. From 5-9-minute clips, a movie is mounted on a computer. This duration is determined by the fact that the length of files on a hard disk with a FAT32 file system is limited to 2 Gbit1. With an output stream of 4-5 MB/s (resolution - 500 lines and Hi-Fi sound quality), the maximum duration of the clip will be 9 minutes. To simplify the docking, it is desirable to give each fragment some completeness.
It should also be remembered that in the film, scenes and episodes can be arranged linearly in chronological or causal order, but the juxtaposition or opposition of parallel storylines brings more dynamism to the narrative, while metaphors give it liveliness and emotional coloring.