Beyond the Morph: What Is Runway Gen-4 and Why It Changed AI Video Forever

For the first few waves of generative AI video, creators shared a collective frustration: the “three-second rule.” You could prompt a breathtaking, photorealistic image, hit generate, and watch in awe as a character opened their mouth to speak—only for their face to warp, their clothing to liquidize, and the entire background to morph into an unrecognizable nightmare.

Enter Runway Gen-4.