Learn in the textbookHow Video Works and Its File Formats
DefinitionA frame (フレーム) is a single still image (静止画) that makes up a video.
ExplanationA video switches through frames that differ only slightly, at short intervals, so the eye sees motion. Each picture lined up on a strip of movie film is also one frame. Counting pictures per unit of time, or compressing by using the differences between neighboring pictures, both treat the frame as the basic unit.
AnalogyEach drawing on a page of a flip book is a frame, and flipping the pages quickly is like playing the video.
Memory hookThink of a picture frame: one frame holds exactly one picture.