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.
Evaluation card
Run one controlled test.
- Keep the brief and source assets identical.
- Record retries, credits, and human review time.
- Inspect product truth and temporal consistency.
- Confirm commercial terms before publishing.