ByteDance announced Seedance 2.5 with up to 30-second audio-video generation, flexible references, editing, and multi-round extension. Topview users can map that duration to hook, proof, offer, and call-to-action beats.
Review claims, product truth, character continuity, sound, and extension seams. A longer render is useful only when every beat survives the approval process.
Before you generate
Start with a small first version.
- Use clear source assets and define the result you need.
- Track retries, credits, and the time needed to finish the output.
- Inspect visual accuracy, consistency, and any generated claims.
- Confirm commercial terms before publishing.