Direct Seedance 2.0 production

Treat this as a provider- and model-family-specific operating guide, not a generic video-prompt recipe. Establish the exact gateway contract before writing a request. “Seedance 2.0” does not imply one portable model ID or schema.

Evidence labels used here:

• Documented — stated in ByteDance/BytePlus or gateway documentation, verified 2026-07-09.
• Production heuristic — a recommended operating practice inferred from documented behavior and normal video-production constraints; validate on the current deployment.
• Independent evidence — third-party measurement or observation with its limits stated.

Decide whether Seedance 2.0 fits

Prefer this family when the shot benefits from one or more of:

• synchronized picture, dialogue, ambience, music, or effects generated in one pass;
• reference images for subject/product/style/layout, a reference video for motion/camera/editing, or reference audio for timbre/rhythm;
• a short self-contained shot, multi-shot beat, edit, or extension lasting 4–15 seconds;
• a first-frame or strict first-and-last-frame transition;
• a multimodal edit in which an element from one asset modifies a different source video.