Generative AI video = you write a text prompt, AI generates a video from a few seconds to 1-2 minutes.
The 3 stars in 2026: Veo 3 (Google), Sora (OpenAI), Kling (Kuaishou Chinese).
Use cases: ads, content marketing, video prototypes, presentations, social media, e-learning, storytelling.
Limits: short duration, sometimes weird hands, limited narrative coherence on long scenes.