Seedance 2.5 now does 4–30 second clips with audio. What I learned testing it

Seedance 2.5 generates up to 30 seconds per run, with sound in the same pass. I've been testing it for product and short-story clips. One long take keeps faces and lighting more consistent than stitching 5-second clips, and reference images help most with product shots. Curious what prompts others are using for longer takes. I ran these on SeedVideo (seeddance.io). More here: Seedance 2.5 online