AI video generation is the practice of using AI to assemble narration, captions and footage from a script, image or existing video. Workflows that used to consume hours of shooting, editing and recording shrink to minutes.
Roughly, the field splits into four families: (1) text-to-video tools that build voiced videos from articles or scripts (Fliki, Pictory), (2) avatar tools where an AI presenter reads your script (Synthesia, HeyGen), (3) browser-based online editors that handle captions and editing (Veed) and (4) generative video tools that synthesize the footage itself (Runway).
The right type depends on your goal. We organize each tool using only its public information so you can pick without second-guessing.