Use when generating or editing video with Seedance models on Scenario via MCP: text-to-video, image-to-video from a first frame, first and last frame anchors, reference-to-video with identity, product, or world references, prompt-based editing, extending a clip, audio-conditioned motion, shot sound without music, or deciding between first-frame and reference conditioning. Keywords: Seedance 2.5 and 2.0, ByteDance, T2V, I2V, V2V, multimodal references, native audio, video extension.