Runway Video Generation API

The Runway Video Generation API allows developers to generate videos from text prompts, images, or existing videos using Gen-4, Gen-4 Turbo, Gen-4.5, Gen-4 Aleph, Veo 3.1, and Veo 3.1 Fast models. Supports text-to-video, image-to-video, video-to-video, character performance (Act Two), lip sync (28+ languages), video upscale, frame interpolation, and sound effect generation. Tasks are processed asynchronously with polling via task ID. Authentication via Bearer token plus X-Runway-Version header set to 2024-11-06.