Seedance 2.5 is a useful candidate for trailers built around existing character art, shot plans and audio references. Its documented workflow combines audiovisual clips of up to 30 seconds, repeated extensions and targeted edits using timestamps, giving a connected sequence more room to develop. Use finished game art and a script to guide the shots, then check faces, outfits, motion and sound before assembling the final timeline. Continuity across cuts still needs review, especially when characters interact. Runway lists a hosted API route, but its ban on adult nudity and sexually explicit content limits that route to non-explicit material.
Commercial use & license
Proprietary hosted model. The hosting service's terms govern access and use; no downloadable weight license is confirmed. Check the applicable terms for commercial use of references and outputs.
Adult content rules
Runway bans adult nudity and sexually explicit content. These restrictions apply when using Seedance 2.5 through Runway.
What you need
Runway API use requires a developer account, project, API key and funded credit balance. Its catalog lists seedance2_5 with up to 30-second output at 480p, 720p and 1080p. Confirm that your chosen endpoint exposes the controls you need.
Ranks are recommendations for the task described, based on reviewed documentation. Model ranks cover non-explicit development work. We have not run practical benchmarks. Check content policies and commercial terms separately. How the ranks work →
Sources & further reading +
Last checked 5 October 2026.