Video is moving pictures captured by a camera and displayed on a screen. Unlike a photograph that freezes one moment in time, video records continuous motion: people walking, talking, playing sports, or doing anything else. When you watch a movie, a YouTube tutorial, or a recording of your birthday party, you're watching video.

Video works by capturing many still images every second (usually 24, 30, or 60 frames per second) and playing them back so quickly that your brain sees smooth motion instead of individual pictures. It's like a flipbook where drawings on each page change slightly, creating the illusion of movement when you flip through it fast enough.

Today we use it as both a noun (“I watched a video”) and a verb (“She's videoing the soccer game”). Before video became common in the 1970s and 1980s, moving pictures could only be captured on film, which was expensive and difficult to work with. Video technology made it possible for regular families to record their own moments and watch them immediately.

Video has transformed how we learn, communicate, and entertain ourselves. Scientists use video to study animal behavior frame by frame. Coaches review game footage to help athletes improve. Video calls let you see grandparents who live far away. The ability to record and share moving images has become one of the most powerful tools of modern life.